Bug#1117529: openssh: CVE-2025-61984

[Salvatore Bonaccorso <carnil@debian.org>]

Source: openssh
Version: 1:10.0p1-8
Severity: important
Tags: security upstream
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>

Hi,

The following vulnerability was published for openssh.

CVE-2025-61984[0]:
| ssh in OpenSSH before 10.1 allows control characters in usernames
| that originate from certain possibly untrusted sources, potentially
| leading to code execution when a ProxyCommand is used. The untrusted
| sources are the command line and %-sequence expansion of a
| configuration file. (A configuration file that provides a complete
| literal username is not categorized as an untrusted source.)

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2025-61984
    https://www.cve.org/CVERecord?id=CVE-2025-61984

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore