Unchecked Return Value Affecting libssh package, versions <0:0.9.6-14.el8


Severity

Recommended
low

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.13% (49th percentile)

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  • Snyk IDSNYK-ORACLE8-LIBSSH-7164612
  • published30 May 2024
  • disclosed19 Dec 2023

Introduced: 19 Dec 2023

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

How to fix?

Upgrade Oracle:8 libssh to version 0:0.9.6-14.el8 or higher.
This issue was patched in ELSA-2024-3233.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libssh package and not the libssh package as distributed by Oracle. See How to fix? for Oracle:8 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