Incorrect Calculation Affecting libssh2-docs package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

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  • Snyk IDSNYK-RHEL7-LIBSSH2DOCS-10609021
  • published4 Jul 2025
  • disclosed24 Jun 2025

Introduced: 24 Jun 2025

NewCVE-2025-5372  (opens in a new tab)
CWE-682  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:7 libssh2-docs.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libssh2-docs package and not the libssh2-docs package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

A flaw was found in libssh versions built with OpenSSL versions older than 3.0, specifically in the ssh_kdf() function responsible for key derivation. Due to inconsistent interpretation of return values where OpenSSL uses 0 to indicate failure and libssh uses 0 for success—the function may mistakenly return a success status even when key derivation fails. This results in uninitialized cryptographic key buffers being used in subsequent communication, potentially compromising SSH sessions' confidentiality, integrity, and availability.

CVSS Base Scores

version 3.1