Description
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.
Metrics
CVSS 3.1 7.5/10
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
| openbsd | openssh | >= 9.5, <= 9.7 |
References
- 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://crzphil.github.io/posts/ssh-obfuscation-bypass/
- https://lists.mindrot.org/pipermail/openssh-unix-announce/2024-July/000158.html
- https://news.ycombinator.com/item?id=41508530
- 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
- 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.freebsd.org/security/advisories/FreeBSD-SA-25:01.openssh.asc
- https://www.openssh.com/txt/release-9.8
- https://www.openwall.com/lists/oss-security/2024/07/02/1
Timeline
- Published
- Jul 2, 2024
- Last modified
- Jun 17, 2026
- NVD status
- Deferred