CVEvulnerability

CVE-2023-6918

5.3 MEDIUM Published 2023-12-19 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2023-12-19
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
3.7 LOW — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weaknesses
CWE-252

Description

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.

Affected configurations

• libssh libssh (>= 0.9.0 < 0.9.8) • libssh libssh (>= 0.10.0 < 0.10.6) • fedoraproject fedora 38 • fedoraproject fedora 39 • redhat enterprise linux 8.0 • redhat enterprise linux 9.0

Related

Weakness · CWE (1)

  • CWE-252 Unchecked Return Value weakness

References