Detection of Error Condition Without Action Affecting openssh-server package, versions <0:8.0p1-26.el8_10


Severity

Recommended
0.0
medium
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
7.72% (95th percentile)

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  • Snyk IDSNYK-ROCKY8-OPENSSHSERVER-13292910
  • published5 Oct 2025
  • disclosed18 Feb 2025

Introduced: 18 Feb 2025

CVE-2025-26465  (opens in a new tab)
CWE-390  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 openssh-server to version 0:8.0p1-26.el8_10 or higher.
This issue was patched in RLSA-2025:16823.

NVD Description

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

A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. A machine-in-the-middle attack can be performed by a malicious machine impersonating a legit server. This issue occurs due to how OpenSSH mishandles error codes in specific conditions when verifying the host key. For an attack to be considered successful, the attacker needs to manage to exhaust the client's memory resource first, turning the attack complexity high.

References

CVSS Base Scores

version 3.1