Bug 1217950 (CVE-2023-48795) - VUL-0: CVE-2023-48795: openssh: prefix truncation breaking ssh channel integrity aka Terrapin Attack
Summary: VUL-0: CVE-2023-48795: openssh: prefix truncation breaking ssh channel integr...
Status: IN_PROGRESS
Alias: CVE-2023-48795
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents (show other bugs)
Version: unspecified
Hardware: Other Other
: P1 - Urgent : Critical
Target Milestone: ---
Assignee: Hans Petter Jansson
QA Contact: Security Team bot
URL: https://smash.suse.de/issue/387549/
Whiteboard: CVSSv3.1:SUSE:CVE-2023-48795:5.9:(AV:...
Keywords:
Depends on: 1218126 1218150 1218198 1218218 1218227 1218264 1218265 1218266 1218267 1218268 1218269 1218270 1218127 1218128 1218134 1218144 1218165 1218168 1218183 1218189 1218192 1218194 1218197
Blocks:
  Show dependency tree / graph
 
Reported: 2023-12-11 15:47 UTC by SMASH SMASH
Modified: 2025-06-04 12:47 UTC (History)
11 users (show)

See Also:
Found By: Security Response Team
Services Priority:
Business Priority:
Blocker: ---
Marketing QA Status: ---
IT Deployment: ---
logan.vance: needinfo? (hpj)

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Comment 12 Marcus Meissner 2023-12-15 12:47:29 UTC 
QA:

additional regression testing:

Try ssh connects from:

 -   unfixed openssh client to fixed server
 -  fixed openssh client to unfixed server
 -  fixed openssh client to fixed server
 -  try non-openssh client (putty?) to fixed server


(putty is in packagbehub of SLE15)

Not necessary on all products or architecutres, but just once per incident.
Comment 18 Maintenance Automation 2023-12-20 08:36:23 UTC 
SUSE-SU-2023:4905-1: An update that solves one vulnerability can now be installed.

Category: security (important)
Bug References: 1217950
CVE References: CVE-2023-48795
Sources used:
SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS 15-SP1 (src): openssh-7.9p1-150100.6.34.1, openssh-askpass-gnome-7.9p1-150100.6.34.1
SUSE Linux Enterprise Server 15 SP1 LTSS 15-SP1 (src): openssh-7.9p1-150100.6.34.1, openssh-askpass-gnome-7.9p1-150100.6.34.1
SUSE Linux Enterprise Server for SAP Applications 15 SP1 (src): openssh-7.9p1-150100.6.34.1, openssh-askpass-gnome-7.9p1-150100.6.34.1
SUSE CaaS Platform 4.0 (src): openssh-7.9p1-150100.6.34.1, openssh-askpass-gnome-7.9p1-150100.6.34.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Comment 19 Maintenance Automation 2023-12-20 08:36:25 UTC 
SUSE-SU-2023:4904-1: An update that solves one vulnerability can now be installed.

Category: security (important)
Bug References: 1217950
CVE References: CVE-2023-48795
Sources used:
SUSE Linux Enterprise High Performance Computing 15 SP2 LTSS 15-SP2 (src): openssh-askpass-gnome-8.1p1-150200.5.43.1, openssh-8.1p1-150200.5.43.1
SUSE Linux Enterprise Server 15 SP2 LTSS 15-SP2 (src): openssh-askpass-gnome-8.1p1-150200.5.43.1, openssh-8.1p1-150200.5.43.1
SUSE Linux Enterprise Server for SAP Applications 15 SP2 (src): openssh-askpass-gnome-8.1p1-150200.5.43.1, openssh-8.1p1-150200.5.43.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Comment 20 Maintenance Automation 2023-12-20 08:36:28 UTC 
SUSE-SU-2023:4903-1: An update that solves one vulnerability, contains one feature and has one security fix can now be installed.

Category: security (important)
Bug References: 1201750, 1217950
CVE References: CVE-2023-48795
Jira References: SLE-24929
Sources used:
SUSE Linux Enterprise High Performance Computing 12 SP5 (src): openssh-askpass-gnome-7.2p2-81.8.1, openssh-7.2p2-81.8.1
SUSE Linux Enterprise Server 12 SP5 (src): openssh-askpass-gnome-7.2p2-81.8.1, openssh-7.2p2-81.8.1
SUSE Linux Enterprise Server for SAP Applications 12 SP5 (src): openssh-askpass-gnome-7.2p2-81.8.1, openssh-7.2p2-81.8.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Comment 21 Maintenance Automation 2023-12-20 08:36:30 UTC 
SUSE-SU-2023:4902-1: An update that solves one vulnerability and has one security fix can now be installed.

Category: security (important)
Bug References: 1214788, 1217950
CVE References: CVE-2023-48795
Sources used:
openSUSE Leap 15.3 (src): openssh-askpass-gnome-8.4p1-150300.3.27.1, openssh-8.4p1-150300.3.27.1
openSUSE Leap Micro 5.3 (src): openssh-8.4p1-150300.3.27.1
openSUSE Leap Micro 5.4 (src): openssh-8.4p1-150300.3.27.1
openSUSE Leap 15.4 (src): openssh-askpass-gnome-8.4p1-150300.3.27.1, openssh-8.4p1-150300.3.27.1
openSUSE Leap 15.5 (src): openssh-askpass-gnome-8.4p1-150300.3.27.1, openssh-8.4p1-150300.3.27.1
SUSE Linux Enterprise Micro for Rancher 5.3 (src): openssh-8.4p1-150300.3.27.1
SUSE Linux Enterprise Micro 5.3 (src): openssh-8.4p1-150300.3.27.1
SUSE Linux Enterprise Micro for Rancher 5.4 (src): openssh-8.4p1-150300.3.27.1
SUSE Linux Enterprise Micro 5.4 (src): openssh-8.4p1-150300.3.27.1
SUSE Linux Enterprise Micro 5.5 (src): openssh-8.4p1-150300.3.27.1
Basesystem Module 15-SP4 (src): openssh-8.4p1-150300.3.27.1
Basesystem Module 15-SP5 (src): openssh-8.4p1-150300.3.27.1
Desktop Applications Module 15-SP4 (src): openssh-askpass-gnome-8.4p1-150300.3.27.1
Desktop Applications Module 15-SP5 (src): openssh-askpass-gnome-8.4p1-150300.3.27.1
SUSE Linux Enterprise High Performance Computing ESPOS 15 SP3 (src): openssh-askpass-gnome-8.4p1-150300.3.27.1, openssh-8.4p1-150300.3.27.1
SUSE Linux Enterprise High Performance Computing LTSS 15 SP3 (src): openssh-askpass-gnome-8.4p1-150300.3.27.1, openssh-8.4p1-150300.3.27.1
SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (src): openssh-askpass-gnome-8.4p1-150300.3.27.1, openssh-8.4p1-150300.3.27.1
SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (src): openssh-askpass-gnome-8.4p1-150300.3.27.1, openssh-8.4p1-150300.3.27.1
SUSE Linux Enterprise Real Time 15 SP4 (src): openssh-askpass-gnome-8.4p1-150300.3.27.1, openssh-8.4p1-150300.3.27.1
SUSE Linux Enterprise Desktop 15 SP4 LTSS 15-SP4 (src): openssh-askpass-gnome-8.4p1-150300.3.27.1, openssh-8.4p1-150300.3.27.1
SUSE Linux Enterprise Server 15 SP3 LTSS 15-SP3 (src): openssh-askpass-gnome-8.4p1-150300.3.27.1, openssh-8.4p1-150300.3.27.1
SUSE Linux Enterprise Server 15 SP4 LTSS 15-SP4 (src): openssh-askpass-gnome-8.4p1-150300.3.27.1, openssh-8.4p1-150300.3.27.1
SUSE Linux Enterprise Server for SAP Applications 15 SP3 (src): openssh-askpass-gnome-8.4p1-150300.3.27.1, openssh-8.4p1-150300.3.27.1
SUSE Linux Enterprise Server for SAP Applications 15 SP4 (src): openssh-askpass-gnome-8.4p1-150300.3.27.1, openssh-8.4p1-150300.3.27.1
SUSE Manager Proxy 4.3 (src): openssh-8.4p1-150300.3.27.1
SUSE Manager Retail Branch Server 4.3 (src): openssh-8.4p1-150300.3.27.1
SUSE Manager Server 4.3 (src): openssh-8.4p1-150300.3.27.1
SUSE Enterprise Storage 7.1 (src): openssh-askpass-gnome-8.4p1-150300.3.27.1, openssh-8.4p1-150300.3.27.1
SUSE Linux Enterprise Micro 5.1 (src): openssh-8.4p1-150300.3.27.1
SUSE Linux Enterprise Micro 5.2 (src): openssh-8.4p1-150300.3.27.1
SUSE Linux Enterprise Micro for Rancher 5.2 (src): openssh-8.4p1-150300.3.27.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Comment 36 Maintenance Automation 2024-10-16 12:31:14 UTC 
SUSE-SU-2024:3656-1: An update that solves 11 vulnerabilities and has five security fixes can now be installed.

URL: https://www.suse.com/support/update/announcement/2024/suse-su-20243656-1
Category: security (moderate)
Bug References: 1095184, 1118897, 1118898, 1118899, 1121850, 1174951, 1181400, 1183703, 1199031, 1208270, 1208297, 1210138, 1213229, 1217070, 1217950, 1218150
CVE References: CVE-2018-16873, CVE-2018-16874, CVE-2018-16875, CVE-2018-16886, CVE-2020-15106, CVE-2020-15112, CVE-2021-28235, CVE-2022-41723, CVE-2023-29406, CVE-2023-47108, CVE-2023-48795
Maintenance Incident: [SUSE:Maintenance:36071](https://smelt.suse.de/incident/36071/)
Sources used:
openSUSE Leap 15.5 (src):
 etcd-3.5.12-150000.7.6.1
openSUSE Leap 15.6 (src):
 etcd-3.5.12-150000.7.6.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Comment 37 Maintenance Automation 2025-06-04 09:12:50 UTC 
SUSE-SU-2025:20009-1: An update that solves four vulnerabilities can now be installed.

URL: https://www.suse.com/support/update/announcement/2025/suse-su-202520009-1
Category: security (critical)
Bug References: 1217950, 1218215, 1226642, 1227318
CVE References: CVE-2023-48795, CVE-2023-51385, CVE-2024-39894, CVE-2024-6387
Sources used:
SUSE Linux Micro 6.0 (src):
 openssh-9.6p1-2.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Comment 38 Maintenance Automation 2025-06-04 09:23:42 UTC 
SUSE-SU-2025:20009-1: An update that solves four vulnerabilities can now be installed.

URL: https://www.suse.com/support/update/announcement/2025/suse-su-202520009-1
Category: security (critical)
Bug References: 1217950, 1218215, 1226642, 1227318
CVE References: CVE-2023-48795, CVE-2023-51385, CVE-2024-39894, CVE-2024-6387
Sources used:
SUSE Linux Micro 6.0 (src):
 openssh-9.6p1-2.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.