Failure to Sanitize Special Element Affecting openssh-keycat package, versions <0:8.0p1-27.el8_10


Severity

Recommended
medium

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.28% (20th percentile)

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  • Snyk IDSNYK-ALMALINUX8-OPENSSHKEYCAT-14551047
  • published23 Dec 2025
  • disclosed17 Dec 2025

Introduced: 17 Dec 2025

CVE-2025-61984  (opens in a new tab)
CWE-159  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 openssh-keycat to version 0:8.0p1-27.el8_10 or higher.
This issue was patched in ALSA-2025:23481.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssh-keycat package and not the openssh-keycat package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

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.)

CVSS Base Scores

version 3.1