The document discusses web application security and provides an overview of common vulnerabilities like SQL injection, cross-site scripting (XSS), and cross-site request forgery (CSRF). It summarizes the OWASP Top 10 list of most critical web app security risks, including injection flaws, broken authentication, sensitive data exposure, and more. The document also offers best practices for developing more securely, like using prepared statements, validating and sanitizing input, and implementing authentication and session management properly.
OWASP Top 10 Web Application VulnerabilitiesSoftware Guru
This document provides an overview of the OWASP Top 10 Risk Rating Methodology. It explains how risks are rated based on four factors: threat agent, attack vector, technical impact, and business impact. Each factor is given a rating of 1-3 (easy to difficult) and these ratings are multiplied together to calculate an overall weighted risk rating. An example of how this methodology would be applied to an SQL injection vulnerability is also provided.
This document discusses various aspects of web security, including the need for security when transmitting data over the internet, common security measures like authentication, authorization, encryption, and accountability. It describes techniques for securing web applications such as SSL, firewalls, VPNs. It provides details on authentication methods like basic authentication and form-based authentication. It also explains concepts like SSL certificates, VPN types, and how firewalls and SSL work.
OWASP Top 10 2021 – Overview and What's New.
OWASP Top 10 is the most successful OWASP Project
It shows ten most critical web application security flaws.
Read the presentation and you will learn each OWASP Top 10 category and recommendations on how to prevent it.
This document provides an overview of cross-site request forgery (CSRF) attacks. It discusses how CSRF works, forcing victims to perform actions on a website without their knowledge. Common defenses like using nonces or CAPTCHAs are described. The document also covers how to validate if an issue is truly a CSRF vulnerability and lists some example attack vectors. Key takeaways emphasize the importance of validating any potential CSRF issue affects state, is sensitive, and has non-unique requests.
OWASP Top 10 2021 Presentation (Jul 2022)TzahiArabov
The document provides information about the OWASP Top 10 2021 list of web application security risks. It describes the top risk, A01: Broken Access Control, giving its definition, examples of vulnerabilities it can enable, prevention methods, and examples. It also summarizes the second and third top risks, A02: Cryptographic Failures and A03: Injection, in a similar manner.
Web security involves protecting information transmitted over the internet from attacks like viruses, worms, trojans, ransomware, and keyloggers. Users can help secure themselves by using antivirus software, avoiding phishing scams, and reporting spam. Larger attacks often involve botnets, which are networks of infected computers that can overwhelm websites and services with traffic through distributed denial of service attacks.
Vulnerabilities in modern web applicationsNiyas Nazar
Microsoft powerpoint presentation for BTech academic seminar.This seminar discuses about penetration testing, penetration testing tools, web application vulnerabilities, impact of vulnerabilities and security recommendations.
The document provides an overview and instructions for installing and using the Damn Vulnerable Web Application (DVWA). DVWA is a PHP/MySQL web application designed to be vulnerable for testing security skills. It contains vulnerabilities like SQL injection, XSS, file inclusion, and more. The document outlines how to install DVWA using XAMPP, describes the different security levels and vulnerabilities, and provides instructions for accessing the vulnerabilities and practicing attacks. It emphasizes that DVWA should only be used on localhost for legal and safe security testing.
The document outlines various web application vulnerabilities and defenses. It discusses outdated software, guessable passwords, exposed source code, client-side issues, authentication errors, injections, and cross-site scripting. It recommends strong defenses like updating software, encrypting source code, validating all user input, and using tools like mod_security to analyze code and monitor activity. The goal is to close vulnerabilities at each layer of a web application to prevent hackers from accessing sensitive data like databases.
Cross Site Scripting (XSS) is a vulnerability that allows malicious users to insert client-side code into web pages that is then executed by a user's browser. This code can steal cookies, access private information, perform actions on the user's behalf, and redirect them to malicious websites. XSS works by having the server display input containing malicious JavaScript from a request. There are different types of XSS attacks, including non-persistent, persistent, and DOM-based attacks. Prevention methods include validating, sanitizing, and escaping all user input on the server-side and client-side. Web vulnerability scanners like Burp Suite can help test for XSS and other vulnerabilities.
Web application security is the process of securing confidential data stored online from unauthorized access and modification. This is accomplished by enforcing stringent policy measures.
A web threat is any threat that uses the World Wide Web to facilitate cybercrime. Web threats use multiple types of malware and fraud, all of which utilize HTTP or HTTPS protocols, but may also employ other protocols and components, such as links in email or IM, or malware attachments or on servers that access the Web.
Cross Site Scripting (XSS) is a type of injection attack where malicious scripts are injected into otherwise benign and trusted websites. XSS has been a top web application vulnerability since 1996. There are three main types of XSS attacks: reflected XSS, stored XSS, and DOM-based XSS. Reflected XSS occurs when malicious scripts come from URLs, while stored XSS happens when scripts are stored on websites. XSS can be used to steal cookies and sessions, redirect users, alter website contents, and damage an organization's reputation. Developers can prevent XSS through input validation, output encoding, and using the HttpOnly flag.
An XSS attack is a type of vulnerability that allows malicious scripts to be injected into web pages viewed by other users. There are three main types: reflected XSS occurs when a link containing malicious code is clicked; stored XSS injects code directly into a vulnerable website, potentially affecting many users; DOM-based XSS involves injecting code into a website hosted on a user's local system, allowing the attacker to access that user's browser privileges. The document provides examples of how XSS attacks work and can be used to hijack accounts, insert hostile content, steal cookies, and redirect users.
The presentation discussed web security issues including client-side, server-side, and data transmission risks and proposed SSL as a solution to encrypt data exchange between clients and servers, providing authentication, integrity, and confidentiality of data. It described the SSL architecture and protocols for encrypting records, negotiating keys during handshake, and alerting of errors. The presentation also covered the SET protocol for secure online payment transactions.
Secure coding is the practice of developing software securely by avoiding security vulnerabilities. It involves understanding the application's attack surface and using techniques like input validation, secure authentication, access control, and encrypting sensitive data. The OWASP organization provides free tools and guidelines to help developers code securely, such as their Top 10 security risks and cheat sheets on issues like injection, authentication, and access control. Developers should use static and dynamic application security testing tools to identify vulnerabilities and continuously learn about secure coding best practices.
Application misconfiguration attacks exploit weaknesses in web applications caused by configuration mistakes. These mistakes include using default passwords and privileges or revealing too much debugging information. Misconfiguration can have minor effects but can also cause major issues like data loss or full system compromise. It is a common problem caused by factors like human error and complex application interfaces. Proper security practices like regular reviews and testing can help detect and prevent misconfiguration vulnerabilities.
Secure web programming plus end users' awareness are the last line of defense against attacks targeted at the corporate systems, particularly web applications, in the era of world-wide web.
Most web application attacks occur through Cross Site Scripting (XSS), and SQL Injection. On the other hand, most web application vulnerabilities arise from weak coding with failure to properly validate users' input, and failure to properly sanitize output while displaying the data to the visitors.
The literature also confirms the following web application weaknesses in 2010: 26% improper output handling, 22% improper input handling, and 15% insufficient authentication, and others.
Abdul Rahman Sherzad, lecturer at Computer Science Faculty of Herat University, and Ph.D. student at Technical University of Berlin gave a presentation at 12th IT conference on Higher Education for Afghanistan in MoHE, and then conducted a seminar at Hariwa Institute of Higher Education in Herat, Afghanistan introducing web application security threats by demonstrating the security problems that exist in corporate systems with a strong emphasis on secure development. Major security vulnerabilities, secure design and coding best practices when designing and developing web-based applications were covered.
The main objective of the presentation was raising awareness about the problems that might occur in web-application systems, as well as secure coding practices and principles. The presentation's aims were to build security awareness for web applications, to discuss the threat landscape and the controls users should use during the software development lifecycle, to introduce attack methods, to discuss approaches for discovering security vulnerabilities, and finally to discuss the basics of secure web development techniques and principles.
The document summarizes key points about web application security vulnerabilities and how to address them. It discusses common vulnerabilities like parameter manipulation, cross-site scripting, and SQL injection that occur due to improper validation of user input. It emphasizes the importance of validating all user input on the server-side to prevent attacks, and not storing sensitive values in cookies or hidden form fields that can be manipulated by attackers.
This document provides an overview of basic static malware analysis techniques. It discusses using antivirus scanners, hashing files, and finding strings to identify malware without executing it. It also covers analyzing the Portable Executable (PE) file format used in Windows executables, including examining the PE header, imported and exported functions, linked libraries, and sections like .text and .rsrc. The document demonstrates various tools for these static analysis tasks like HashCalc, strings, PEview, Dependency Walker, and Resource Hacker.
This document summarizes the OWASP Top Ten 2013 report, which outlines the top 10 most critical web application security risks. It discusses the methodology used to determine the top risks, comparisons to past versions, and politics around ranking certain vulnerabilities. It also provides context on how and when the OWASP Top Ten list should be cited and explains the risk rating methodology used to evaluate vulnerabilities.
+ Background & Basics of Web App Security, The HTTP Protocol, Web.
+ Application Insecurities, OWASP Top 10 Vulnerabilities (XSS, SQL Injection, CSRF, etc.)
+ Web App Security Tools (Scanners, Fuzzers, etc), Remediation of Web App
+ Vulnerabilities, Web Application Audits and Risk Assessment.
Web Application Security 101 was conducted by:
Vaibhav Gupta, Vishal Ashtana, Sandeep Singh from Null.
The document outlines Prajakta Shinde's seminar on phishing attacks. It defines phishing as attempting to acquire personal information through electronic communication by posing as a trustworthy entity. It discusses common phishing techniques like link manipulation and phone phishing. It also covers types of phishing like deceptive and man-in-the-middle phishing, causes of phishing like user awareness and website vulnerabilities, methods to defend against attacks, and concludes that a combination of user education and security improvements can help reduce phishing.
This document provides an overview of flooding, including its causes, hazards, and management in India. It begins with an introduction defining flooding as caused by heavy rain or snowmelt that overflows land. It then discusses how flooding starts and ends, why it occurs, and its hazardous environmental effects such as poor soil quality, damaged trees and crops. The document outlines India's flood management approaches including modifying floods, susceptibility, and loss burden. It details structural measures like dams and non-structural measures like flood forecasting. Finally, it proposes future strategies around a focused basin-wise approach, flood plain zoning, central government role, and capacity building.
Basic security concepts for web applications and web sites for today's environment. Server Configuration, Site Configuration, Best Practices, and Passwords.
Web security involves protecting information transmitted over the internet from attacks like viruses, worms, trojans, ransomware, and keyloggers. Users can help secure themselves by using antivirus software, avoiding phishing scams, and reporting spam. Larger attacks often involve botnets, which are networks of infected computers that can overwhelm websites and services with traffic through distributed denial of service attacks.
Vulnerabilities in modern web applicationsNiyas Nazar
Microsoft powerpoint presentation for BTech academic seminar.This seminar discuses about penetration testing, penetration testing tools, web application vulnerabilities, impact of vulnerabilities and security recommendations.
The document provides an overview and instructions for installing and using the Damn Vulnerable Web Application (DVWA). DVWA is a PHP/MySQL web application designed to be vulnerable for testing security skills. It contains vulnerabilities like SQL injection, XSS, file inclusion, and more. The document outlines how to install DVWA using XAMPP, describes the different security levels and vulnerabilities, and provides instructions for accessing the vulnerabilities and practicing attacks. It emphasizes that DVWA should only be used on localhost for legal and safe security testing.
The document outlines various web application vulnerabilities and defenses. It discusses outdated software, guessable passwords, exposed source code, client-side issues, authentication errors, injections, and cross-site scripting. It recommends strong defenses like updating software, encrypting source code, validating all user input, and using tools like mod_security to analyze code and monitor activity. The goal is to close vulnerabilities at each layer of a web application to prevent hackers from accessing sensitive data like databases.
Cross Site Scripting (XSS) is a vulnerability that allows malicious users to insert client-side code into web pages that is then executed by a user's browser. This code can steal cookies, access private information, perform actions on the user's behalf, and redirect them to malicious websites. XSS works by having the server display input containing malicious JavaScript from a request. There are different types of XSS attacks, including non-persistent, persistent, and DOM-based attacks. Prevention methods include validating, sanitizing, and escaping all user input on the server-side and client-side. Web vulnerability scanners like Burp Suite can help test for XSS and other vulnerabilities.
Web application security is the process of securing confidential data stored online from unauthorized access and modification. This is accomplished by enforcing stringent policy measures.
A web threat is any threat that uses the World Wide Web to facilitate cybercrime. Web threats use multiple types of malware and fraud, all of which utilize HTTP or HTTPS protocols, but may also employ other protocols and components, such as links in email or IM, or malware attachments or on servers that access the Web.
Cross Site Scripting (XSS) is a type of injection attack where malicious scripts are injected into otherwise benign and trusted websites. XSS has been a top web application vulnerability since 1996. There are three main types of XSS attacks: reflected XSS, stored XSS, and DOM-based XSS. Reflected XSS occurs when malicious scripts come from URLs, while stored XSS happens when scripts are stored on websites. XSS can be used to steal cookies and sessions, redirect users, alter website contents, and damage an organization's reputation. Developers can prevent XSS through input validation, output encoding, and using the HttpOnly flag.
An XSS attack is a type of vulnerability that allows malicious scripts to be injected into web pages viewed by other users. There are three main types: reflected XSS occurs when a link containing malicious code is clicked; stored XSS injects code directly into a vulnerable website, potentially affecting many users; DOM-based XSS involves injecting code into a website hosted on a user's local system, allowing the attacker to access that user's browser privileges. The document provides examples of how XSS attacks work and can be used to hijack accounts, insert hostile content, steal cookies, and redirect users.
The presentation discussed web security issues including client-side, server-side, and data transmission risks and proposed SSL as a solution to encrypt data exchange between clients and servers, providing authentication, integrity, and confidentiality of data. It described the SSL architecture and protocols for encrypting records, negotiating keys during handshake, and alerting of errors. The presentation also covered the SET protocol for secure online payment transactions.
Secure coding is the practice of developing software securely by avoiding security vulnerabilities. It involves understanding the application's attack surface and using techniques like input validation, secure authentication, access control, and encrypting sensitive data. The OWASP organization provides free tools and guidelines to help developers code securely, such as their Top 10 security risks and cheat sheets on issues like injection, authentication, and access control. Developers should use static and dynamic application security testing tools to identify vulnerabilities and continuously learn about secure coding best practices.
Application misconfiguration attacks exploit weaknesses in web applications caused by configuration mistakes. These mistakes include using default passwords and privileges or revealing too much debugging information. Misconfiguration can have minor effects but can also cause major issues like data loss or full system compromise. It is a common problem caused by factors like human error and complex application interfaces. Proper security practices like regular reviews and testing can help detect and prevent misconfiguration vulnerabilities.
Secure web programming plus end users' awareness are the last line of defense against attacks targeted at the corporate systems, particularly web applications, in the era of world-wide web.
Most web application attacks occur through Cross Site Scripting (XSS), and SQL Injection. On the other hand, most web application vulnerabilities arise from weak coding with failure to properly validate users' input, and failure to properly sanitize output while displaying the data to the visitors.
The literature also confirms the following web application weaknesses in 2010: 26% improper output handling, 22% improper input handling, and 15% insufficient authentication, and others.
Abdul Rahman Sherzad, lecturer at Computer Science Faculty of Herat University, and Ph.D. student at Technical University of Berlin gave a presentation at 12th IT conference on Higher Education for Afghanistan in MoHE, and then conducted a seminar at Hariwa Institute of Higher Education in Herat, Afghanistan introducing web application security threats by demonstrating the security problems that exist in corporate systems with a strong emphasis on secure development. Major security vulnerabilities, secure design and coding best practices when designing and developing web-based applications were covered.
The main objective of the presentation was raising awareness about the problems that might occur in web-application systems, as well as secure coding practices and principles. The presentation's aims were to build security awareness for web applications, to discuss the threat landscape and the controls users should use during the software development lifecycle, to introduce attack methods, to discuss approaches for discovering security vulnerabilities, and finally to discuss the basics of secure web development techniques and principles.
The document summarizes key points about web application security vulnerabilities and how to address them. It discusses common vulnerabilities like parameter manipulation, cross-site scripting, and SQL injection that occur due to improper validation of user input. It emphasizes the importance of validating all user input on the server-side to prevent attacks, and not storing sensitive values in cookies or hidden form fields that can be manipulated by attackers.
This document provides an overview of basic static malware analysis techniques. It discusses using antivirus scanners, hashing files, and finding strings to identify malware without executing it. It also covers analyzing the Portable Executable (PE) file format used in Windows executables, including examining the PE header, imported and exported functions, linked libraries, and sections like .text and .rsrc. The document demonstrates various tools for these static analysis tasks like HashCalc, strings, PEview, Dependency Walker, and Resource Hacker.
This document summarizes the OWASP Top Ten 2013 report, which outlines the top 10 most critical web application security risks. It discusses the methodology used to determine the top risks, comparisons to past versions, and politics around ranking certain vulnerabilities. It also provides context on how and when the OWASP Top Ten list should be cited and explains the risk rating methodology used to evaluate vulnerabilities.
+ Background & Basics of Web App Security, The HTTP Protocol, Web.
+ Application Insecurities, OWASP Top 10 Vulnerabilities (XSS, SQL Injection, CSRF, etc.)
+ Web App Security Tools (Scanners, Fuzzers, etc), Remediation of Web App
+ Vulnerabilities, Web Application Audits and Risk Assessment.
Web Application Security 101 was conducted by:
Vaibhav Gupta, Vishal Ashtana, Sandeep Singh from Null.
The document outlines Prajakta Shinde's seminar on phishing attacks. It defines phishing as attempting to acquire personal information through electronic communication by posing as a trustworthy entity. It discusses common phishing techniques like link manipulation and phone phishing. It also covers types of phishing like deceptive and man-in-the-middle phishing, causes of phishing like user awareness and website vulnerabilities, methods to defend against attacks, and concludes that a combination of user education and security improvements can help reduce phishing.
This document provides an overview of flooding, including its causes, hazards, and management in India. It begins with an introduction defining flooding as caused by heavy rain or snowmelt that overflows land. It then discusses how flooding starts and ends, why it occurs, and its hazardous environmental effects such as poor soil quality, damaged trees and crops. The document outlines India's flood management approaches including modifying floods, susceptibility, and loss burden. It details structural measures like dams and non-structural measures like flood forecasting. Finally, it proposes future strategies around a focused basin-wise approach, flood plain zoning, central government role, and capacity building.
Basic security concepts for web applications and web sites for today's environment. Server Configuration, Site Configuration, Best Practices, and Passwords.
The document discusses various topics related to web security including what it is, why it is important, common types of web attacks like SQL injection, cross-site scripting, password cracking, and phishing. It also discusses methods to provide security, such as using high security passwords, digital signatures, encryption/decryption, and biometric authentication. The conclusion states that as more security methods are available for websites, the future will be safer.
This talk walks through the basics of web security without focussing too much on the particular tools that you choose. The concepts are universal, although most examples will be in Perl. We'll also look at various attack vectors (SQL Injection, XSS, CSRF, and more) and see how you can avoid them. Whether you're an experienced web developer (we all need reminding) or just starting out, this talk can help avoid being the next easy harvest of The Bad Guys.
The document provides an overview of web security concepts including:
- Secure Socket Layer (SSL) and Transport Layer Security (TLS) which provide data encryption, server authentication, integrity and confidentiality over TCP.
- Secure Electronic Transaction (SET) which defines security protocols and formats to protect credit card transactions on the internet involving cardholders, merchants, issuers, acquirers and certificate authorities.
- The SSL/TLS handshake protocol establishes a secure connection between a client and server by authenticating the server, negotiating encryption algorithms, and exchanging keys to encrypt further communication.
An exposition on the security of the web. Is the web safe enough? History has taught us that we should never underestimate the amount of money, time, and effort someone will expend to thwart a security system.
The document is a presentation about the internet and internet security. It defines internet as a global collection of networks connected together. It notes some key facts about the early history and growth of the internet. It also summarizes that internet users are identified by IP addresses and discusses what IP addresses are and how they work. The presentation goes on to discuss common internet activities and security risks online, providing tips for securing devices, browsers, passwords, and privacy settings.
Basic overview, testing, mitigation plan for popular web application vulnerabilities such as: XSS, CSRF, SQLi etc.
Updated "Web Security - Introduction" presentation.
This document discusses various attacks on Facebook, including phishing, cross-site request forgery (CSRF), and cross-site scripting (XSS). It notes that sending usernames and passwords in clear text leaves them vulnerable to interception. It also describes how JavaScript can be used to redirect users to fake login pages to steal passwords after a set time period. The document provides information on the Facebook platform and APIs that could potentially be exploited by hackers to upload malicious applications or access user data without permission.
El documento habla sobre la crisis migratoria europea desde 1940 hasta 2016, con la llegada de refugiados europeos exiliados después de la Segunda Guerra Mundial y de sirios huyendo del conflicto en su país. También menciona el volcamiento de una barca en febrero de 2016 y las discusiones sobre si los refugiados son bienvenidos o no en Europa y sobre los campos de refugiados como el de Schisto.
Phishing es un término informático que se refiere a un modelo de abuso caracterizado por intentar adquirir información confidencial de forma fraudulenta, como contraseñas o detalles de tarjetas de crédito, haciéndose pasar por una persona o empresa de confianza. Los principales daños incluyen el robo de identidad y datos confidenciales de los usuarios, lo que puede conllevar pérdidas económicas o impedir el acceso a sus cuentas. La netiqueta se refiere a las normas de comportamiento en Internet
Cross Site Scripting (XSS) is a type of vulnerability that allows attackers to inject client-side scripts into web pages viewed by other users. There are three main types: persistent XSS saves the attack script on the server; reflected XSS executes a script based on user-supplied input; and DOM-based XSS occurs when active browser content processes untrusted user input. Attackers use XSS to steal session cookies or other private information that can be used to impersonate users.
Introduction to web security @ confess 2012jakobkorherr
The document introduces various topics related to web security including an overview of common web application vulnerabilities like SQL injection, cross-site scripting, and cross-site request forgery as well as potential countermeasures. It also provides background on typical web application architecture and outlines the OWASP top 10 list of most critical web application security risks.
Top Ten Proactive Web Security Controls v5Jim Manico
It is not easy to build a secure, low-risk or risk-managed web application. Firewalls, “policy” and other traditional information security measures serve as either an incomplete or useless measure in the pursuit of web application security.
As software developers author the code that makes up a web application, they need to do so in a secure manner. All tiers of a web application, the user interface, the business logic, the controller, the database code and more – all need to be developed with security in mind. This can be a very difficult task and developers are often set up for failure. Most developers did not learn about secure coding or crypto in school. The languages and frameworks that developers use to build web applications are often lacking critical core controls or are insecure by default in some way. There may be inherent flaws in requirements and designs. It is also very rare when organizations provide developers with prescriptive requirements that guide them down the path of secure software. When it comes to web security, developers are often set up to lose the security game.
This document was written by developers for developers, to assist those new to secure development. It aims to guide developers and other software development professionals down the path of secure web application software development.
This document is neither scientific nor complete. In fact it is a bit misguided. There are more than 10 issues that developers need to be aware of. Some of these “top ten” controls will be very specific, others will be general categories. Some of these items are technical, others are process based. Some may argue that this document includes items that are not even controls at all. All of these concerns are fair. Again, this is an awareness document meant for those new to secure software development. It is a start, not an end.
Gerald Z. Villorente presents on the topic of web security. He discusses security levels including server, network, application, and user levels. Some common web application threats are also outlined such as cross-site scripting, SQL injection, and denial-of-service attacks. The presentation provides an overview of aspects of data security, principles of secure development, and best practices for web security.
The document discusses various web application security issues like SQL injection, input validation, cross-site scripting and provides recommendations to prevent these vulnerabilities when developing PHP applications. It emphasizes the importance of validating all user inputs, using prepared statements and output encoding to prevent code injection attacks and ensuring session security. The document also covers other attacks like cross-site request forgery and provides mitigation techniques.
This session explains how the combination of IEEE 802.1AE (data link encryption) with the power of Session Group Tags achieves trusted security in a network. It covers the protocols details as well as use case and more importantly how CTS can be deployed in a network. This session is targeted mainly to enterprise customers.
This document is a chapter from a textbook on web development security. It covers several key security principles for web development, including the CIA triad of confidentiality, integrity and availability. It discusses risk assessment and management, including identifying actors, impacts, threats and vulnerabilities. Authentication methods like passwords, multifactor authentication and third party authentication are explained. The importance of authorization to define user privileges is also covered. Overall security practices like secure design, testing, policies and business continuity planning are recommended.
This document discusses various web application security vulnerabilities like injection, cross-site scripting (XSS), cross-site request forgery (CSRF), security misconfiguration, and insecure direct object references. It provides examples of each vulnerability and methods for preventing them, such as input validation, output encoding, using parameterized queries, and generating unique identifiers. The document also covers topics like HTTP, sessions, cookies and the importance of keeping software updated.
My presentation about Web Apps security threats. Macedonian Code Camp conference 2013.
“Every program has at least two purposes: the one for which it was written, and another for which it wasn't.”
-Alan J. Perlis
Avoiding Application Attacks: A Guide to Preventing the OWASP Top 10 from Hap...IBM Security
View the on-demand recording: http://securityintelligence.com/events/avoiding-application-attacks/
Your organization is running fast to build your business. You are developing new applications faster than ever and utilizing new cloud-based development platforms. Your customers and employees expect applications that are powerful, highly usable, and secure. Yet this need for speed coupled with new development techniques is increasing the likelihood of security issues.
How can you meet the needs of speed to market with security? Hear Paul Ionescu, IBM Security, Ethical Hacking Team Lead discuss:
- How application attacks work
- Open Web Application Security Project (OWASP) goals
- How to build defenses into your applications
- The 10 most common web application attacks, including demos of the infamous Shellshock and Heartbleed vulnerabilities
- How to test for and prevent these types of threats
7.1 Identify which attribute scopes are thread-safe:
Local variables
Instance variables
Class variables
Request attributes
Session attributes
Context attributes
7.2 Identify correct statements about differences between the multithreaded and single-threaded servlet models.
7.3 Identify the interface used to declare that a servlet must use the single thread model.
6.1 Identify correct descriptions or statements about the security issues:
Authentication
authorization
Data integrity
Auditing
Malicious code
Website attacks
6.2 Identify the deployment descriptor element names, and their structure, that declare the following:
A security constraint
A web resource
The login configuration
A security role
6.3 Given authentication type: BASIC, DIGEST, FORM, and CLIENT-CERT, identify the correct definition of its mechanism.
Security Testing involves testing applications and systems to ensure security and proper functionality. It includes testing input validation, internal processing, output validation, and more. Common types of security testing are security auditing, vulnerability scanning, risk assessment, ethical hacking, and penetration testing. The OWASP Top 10 includes SQL injection, cross-site scripting, and broken authentication and session management as common vulnerabilities.
Soteria offers a Cyber Security Health Check for SAP systems that takes 8-10 days to complete. The Health Check evaluates security vulnerabilities, access controls, patching, and common attack vectors. It also checks compliance with the UK Cyber Essentials scheme. Upon completion, Soteria provides a report detailing any issues found and recommendations for remediation. As an optional addition, Soteria can perform a penetration test tailored for common SAP vulnerabilities.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Web Component Development Using Servlet & JSP Technologies (EE6) - Chapter 1...WebStackAcademy
Security Implementation Mechanisms
The characteristics of an application should be considered when deciding the layer and type of security to be provided for applications. The following sections discuss the characteristics of the common mechanisms that can be used to secure Java EE applications. Each of these mechanisms can be used individually or with others to provide protection layers based on the specific needs of your implementation.
Java SE Security Implementation Mechanisms
Java SE provides support for a variety of security features and mechanisms, including:
Java Authentication and Authorization Service (JAAS): JAAS is a set of APIs that enable services to authenticate and enforce access controls upon users. JAAS provides a pluggable and extensible framework for programmatic user authentication and authorization. JAAS is a core Java SE API and is an underlying technology for Java EE security mechanisms.
Java Generic Security Services (Java GSS-API): Java GSS-API is a token-based API used to securely exchange messages between communicating applications. The GSS-API offers application programmers uniform access to security services atop a variety of underlying security mechanisms, including Kerberos.
Java Cryptography Extension (JCE): JCE provides a framework and implementations for encryption, key generation and key agreement, and Message Authentication Code (MAC) algorithms. Support for encryption includes symmetric, asymmetric, block, and stream ciphers. Block ciphers operate on groups of bytes while stream ciphers operate on one byte at a time. The software also supports secure streams and sealed objects.
Java Secure Sockets Extension (JSSE): JSSE provides a framework and an implementation for a Java version of the SSL and TLS protocols and includes functionality for data encryption, server authentication, message integrity, and optional client authentication to enable secure Internet communications.
Simple Authentication and Security Layer (SASL): SASL is an Internet standard (RFC 2222) that specifies a protocol for authentication and optional establishment of a security layer between client and server applications. SASL defines how authentication data is to be exchanged but does not itself specify the contents of that data. It is a framework into which specific authentication mechanisms that specify the contents and semantics of the authentication data can fit.
A penetration test evaluates a system's security by simulating attacks. A web application penetration test focuses on a web application's security. The process involves actively analyzing the application for weaknesses, flaws, or vulnerabilities. Any issues found are reported to the owner along with impact assessments and mitigation proposals.
The document discusses various techniques for implementing access controls and protecting data. It provides examples of using Apache Shiro to implement permission-based access control checks. It also discusses the benefits of HTTPS for encrypting data in transit, including confidentiality, integrity and authenticity. Best practices for HTTPS configuration are outlined. Hard-coded role checks and lack of centralized access control logic are identified as anti-patterns to avoid.
Java Web Programming [9/9] : Web Application SecurityIMC Institute
This document provides an overview of web application security. It discusses general security issues like authentication, authorization, data integrity and confidentiality. It then describes different web-tier authentication schemes like BASIC, DIGEST, FORM and CLIENT-CERT. Finally, it covers declarative and programmatic authorization approaches for access control at the web-tier.
The document provides guidelines for secure coding. It discusses the evolution of software markets and increased security threats. Common web attacks like injection, broken authentication, and sensitive data exposure are explained. The OWASP Top 10 list of vulnerabilities is reviewed. The document emphasizes the importance of secure coding practices like input validation, output encoding, and using components with no known vulnerabilities. Following a secure coding lifestyle can help developers write more secure code and protect against attacks.
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The document discusses web application security testing techniques. It covers topics like the difference between web sites and applications, security definitions, vulnerabilities like SQL injection and XSS, defense mechanisms, and tools for security testing like Burp Suite. The agenda includes discussing concepts, designing test cases, and practicing security testing techniques manually and using automated tools.
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2. What is web security?
Almost everything relies on computers and the Internet
now
Communication
transportation
medicine
shopping
Entertainment
Web Security, also known as “Cyber security” involves
protecting that information by preventing, detecting,
and responding to attacks.
4. Web Security Issues
Malicious websites:- Malicious websites
China - 67%
US - 15%
Russia - 4%
Malaysia- 2.2%
Korea - 2%
SPAM:-Spam is unsolicited e-mail on the Internet.
Phishing:-This is a method of luring an unsuspecting user into
giving out their username and password for a secure web resource,
usually a bank or credit card account.
DDOS-Web server can handle a few hundred connections/sec before
performance begins to degrade. Web servers fail almost instantly
under five or six thousand connections/sec
Botnets:-A botnet is a collection of compromised computers (called
zombie computers) running programs, usually installed via worms,
Trojan horses, or backdoors, under a common command and control
infrastructure.
7. Develop: Role-based security
• Java EE security uses roles to determine categories of users
that can access a particular enterprise application
– A role is an abstract group mapped to a set of security
identities during deployment.
– Groups are similar to roles, but apply to all enterprise
projects in the application server.
/reportcardInfo.jsp
/maintainUsersInfo.jsp
Web application
Role = Administrator
Role = Student
8. Define security roles for Web
applications
1. Define security roles in the Security details section
of the Web Deployment Descriptor editor
– Roles represent categories of users that can
access the Web application
9. Constrain access based on security role
2. Set Security Constraints
details for the Web
application:
a. List which Web
resources apply to the
security constraint in the
Web resource
collection
b. Define which roles are
authorized to use the
Web resource collection
in the Authorized Roles
10. Gather roles in the enterprise application
3. In the Enterprise Application Deployment
Descriptor editor, click the Open WebSphere
Bindings link
4. Add Security Role and specify name in the details
section
11. Web container client authentication
• Authentication methods for a Web application client:
– Basic authentication
• Client sends user name and password in the HTTP header using base64
encoding.
– Form-based authentication
• Client sends user name and password in an HTML form
• Sent in an HTTP Post request in plain text.
– Digest authentication
• Client sends an MD5 (Message-Digest algorithm 5) hash based on the user
name, password, URI resource, and other information.
– Certificate-based authentication
• Client uses a digital certificate to uniquely identify itself
– A trusted third-party, known as a certificate authority (CA) issues
digital certificates.
– Digital certificates include a unique serial number, identification
information, and the user’s public key.
12. Configure client authentication method
1. In the Web Deployment Descriptor, add Login
Configuration item and specify the following details.
a. For basic authentication, enter an arbitrary realm name
b. For form authentication, specify both a Login page and
an Error page
13. Declarative and programmatic security
• Web application security configured using a declarative model
• Web applications can view security information programmatically
– The following three methods from HttpServletRequest provides information on
the security context:
• getRemoteUser()
– Returns the user name that the client used for authentication
– Returns null if no user is authenticated
• isUserInRole(String name)
– Returns true if the remote user is granted the specified security role
– If the remote user is not granted the specified role, or if no user is
authenticated, it returns false
• getUserPrincipal()
– Returns the java.security.Principal object containing the remote user
name
– If no user is authenticated, it returns null
14. Define security role references
• Use security role references to avoid hard-coding Java EE security role names into
programmatic security calls
– Reference acts as an alias to the actual security role name
– Per servlet setting, set in the Security Role Reference list within the Servlets
section in the Web Deployment Descriptor
15. Enterprise application security overview
• WebSphere Application Server is built upon several layers of security:
– The operating system protects WebSphere configuration files, and
provides user authentication when using the local OS user registry
– The Java Virtual Machine (JVM) provides standard Java security
– Java™ 2 Security builds upon standard Java security
• Fine-grained access control
• Configurable security policy
• Security checks for all Java applications
– Java™ EE Security provides standard, container-level security
• Insulates enterprise applications from the actual security
implementation
• Classifies clients into roles, each with different access levels for a
given resource
16. WebSphere environment security layers
Platform Security
Operating System
Java Security
Java Virtual Machine
Java 2 Security
JCE JAAS JSSE
Java EE Security
Java EE Security
WebSphere Security
Transport Security
HTTP IIOP LDAP
Client Security
Client application / external component
19. Penetrate : OWASP
The Open Web Application Security Project
(OWASP) is a worldwide not-for-profit
charitable organization focused on
improving the security of software.
At OWASP you’ll find free and open
Application security tools, complete books,
standard security controls and libraries,
cutting edge research
http://www.owasp.org
20. 7 Security (Mis)Configurations
in web.xml
1. Error pages not configured
2. Authentication & Authorization
Bypass
3. SSL Not Configured
4. Not Using the Secure Flag
5. Not Using the HttpOnly Flag
6. Using URL Parameters for
Session Tracking
7. Not Setting a Session Timeout
24. Thank You
“Security is a quality, and as
all other quality, it is
important that we build it
into our apps while we are
developing them, not
patching it on afterwards
like many people do.”
- Erlend Oftedal
Speaker:-
Padam Banthia