Detection of Error Condition Without Action Affecting openssh-fips package, versions <8.4p1-150300.3.42.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

Exploit Maturity
Not Defined

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  • Snyk IDSNYK-SLES155-OPENSSHFIPS-8743438
  • published22 Feb 2025
  • disclosed20 Feb 2025

Introduced: 20 Feb 2025

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

How to fix?

Upgrade SLES:15.5 openssh-fips to version 8.4p1-150300.3.42.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssh-fips package and not the openssh-fips package as distributed by SLES. See How to fix? for SLES:15.5 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.

CVSS Scores

version 3.1