CVE-2024-39894
Not scored
CVE-2024-39894
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.
Exploit probability
1.6%
Published
July 2, 2024
Required by
Not available
Last source change
April 10, 2026
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Open Source Vulnerabilities
CVE-2024-39894
View original source
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.
05 / REFERENCES
Further evidence
- 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.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