Information Exposure The advisory has been revoked - it doesn't affect any version of package openssh-askpass (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CENTOS10-OPENSSHASKPASS-12459584
- published3 Sept 2025
- disclosed2 Jul 2024
Introduced: 2 Jul 2024
CVE-2024-39894 (opens in a new tab)Amendment
The Centos security team deemed this advisory irrelevant for Centos:10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream openssh-askpass package and not the openssh-askpass package as distributed by Centos.
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://bugzilla.redhat.com/show_bug.cgi?id=2295273
- https://access.redhat.com/security/cve/CVE-2024-39894
- https://crzphil.github.io/posts/ssh-obfuscation-bypass/
- https://news.ycombinator.com/item?id=41508530
- https://www.freebsd.org/security/advisories/FreeBSD-SA-25:01.openssh.asc
- http://seclists.org/fulldisclosure/2024/Sep/33
- http://www.openwall.com/lists/oss-security/2024/07/03/6
- http://www.openwall.com/lists/oss-security/2024/07/23/4
- http://www.openwall.com/lists/oss-security/2024/07/23/6
- http://www.openwall.com/lists/oss-security/2024/07/28/3
- https://lists.mindrot.org/pipermail/openssh-unix-announce/2024-July/000158.html
- https://security.netapp.com/advisory/ntap-20240712-0004/
- https://www.openssh.com/txt/release-9.8
- https://www.openwall.com/lists/oss-security/2024/07/02/1