Bug 1227318 (CVE-2024-39894) - VUL-0: CVE-2024-39894: openssh: timing attacks against echo-off password entry
Summary: VUL-0: CVE-2024-39894: openssh: timing attacks against echo-off password entry
Status: IN_PROGRESS
Alias: CVE-2024-39894
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents (show other bugs)
Version: unspecified
Hardware: Other Other
: P3 - Medium : Normal
Target Milestone: ---
Assignee: Security Team bot
QA Contact: Security Team bot
URL: https://smash.suse.de/issue/412727/
Whiteboard: CVSSv3.1:SUSE:CVE-2024-39894:5.9:(AV:...
Keywords:
Depends on:
Blocks:
 
Reported: 2024-07-03 06:53 UTC by SMASH SMASH
Modified: 2024-07-17 16:30 UTC (History)
5 users (show)

See Also:
Found By: Security Response Team
Services Priority:
Business Priority:
Blocker: ---
Marketing QA Status: ---
IT Deployment: ---

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Description SMASH SMASH 2024-07-03 06:53:30 UTC 
OpenSSH 9.5 through 9.7 before 9.8 sometimes allows timing attacks against echo-off password entry (e.g., for su and Sudo) because of an ObscureKeystrokeTiming logic error. Similarly, other timing attacks against keystroke entry could occur.

References:
https://lists.mindrot.org/pipermail/openssh-unix-announce/2024-July/000158.html
https://www.openssh.com/txt/release-9.8
http://www.openwall.com/lists/oss-security/2024/07/02/1
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-39894
https://www.cve.org/CVERecord?id=CVE-2024-39894
Comment 1 Alexander Bergmann 2024-07-03 07:01:09 UTC 
Only Factory needs to be updated.
Comment 3 Antonio Larrosa 2024-07-05 19:08:34 UTC 
I submitted:
https://build.opensuse.org/request/show/1185823 to Factory
https://build.suse.de/request/show/337750 to SLE-15-SP6
https://build.suse.de/request/show/337749 to ALP
to fix this (and a couple of other issues that I found while reviewing upstream changes).
Comment 5 Maintenance Automation 2024-07-10 16:30:04 UTC 
SUSE-SU-2024:2393-1: An update that solves two vulnerabilities and has three security fixes can now be installed.

Category: security (moderate)
Bug References: 1218215, 1224392, 1225904, 1227318, 1227350
CVE References: CVE-2023-51385, CVE-2024-39894
Maintenance Incident: [SUSE:Maintenance:34681](https://smelt.suse.de/incident/34681/)
Sources used:
openSUSE Leap 15.6 (src):
 openssh-askpass-gnome-9.6p1-150600.6.6.1, openssh-9.6p1-150600.6.6.1
Basesystem Module 15-SP6 (src):
 openssh-9.6p1-150600.6.6.1
Desktop Applications Module 15-SP6 (src):
 openssh-askpass-gnome-9.6p1-150600.6.6.1

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.