Unchecked Return Value Affecting libssh-devel package, versions <0:0.10.4-13.el9


Severity

Recommended
0.0
low
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.11% (45th percentile)

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  • Snyk IDSNYK-RHEL9-LIBSSHDEVEL-7883020
  • published3 Sept 2024
  • disclosed18 Dec 2023

Introduced: 18 Dec 2023

CVE-2023-6918  (opens in a new tab)
CWE-252  (opens in a new tab)

How to fix?

Upgrade RHEL:9 libssh-devel to version 0:0.10.4-13.el9 or higher.
This issue was patched in RHSA-2024:2504.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libssh-devel package and not the libssh-devel package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

A flaw was found in the libssh implements abstract layer for message digest (MD) operations implemented by different supported crypto backends. The return values from these were not properly checked, which could cause low-memory situations failures, NULL dereferences, crashes, or usage of the uninitialized memory as an input for the KDF. In this case, non-matching keys will result in decryption/integrity failures, terminating the connection.

CVSS Scores

version 3.1