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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Red Hat Red Hat Enterprise Linux 8
Default version status: affected
0:0.9.6-14.el8 to < *unaffected
Red Hat Red Hat Enterprise Linux 8
Default version status: affected
0:0.9.6-14.el8 to < *unaffected
Red Hat Red Hat Enterprise Linux 9
Default version status: affected
0:0.10.4-13.el9 to < *unaffected
Red Hat Red Hat Enterprise Linux 9
Default version status: affected
0:0.10.4-13.el9 to < *unaffected
Red Hat Red Hat Enterprise Linux 6
Default version status: unknown
Red Hat Red Hat Enterprise Linux 7
Default version status: unknown
Red Hat Red Hat Enterprise Linux 7
Default version status: unknown
References
- https://access.redhat.com/errata/RHSA-2024:2504 ↗
- https://access.redhat.com/errata/RHSA-2024:3233 ↗
- https://access.redhat.com/security/cve/CVE-2023-6918 ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=2254997 ↗
- https://www.libssh.org/2023/12/18/libssh-0-10-6-and-libssh-0-9-8-security-releases/ ↗
- https://www.libssh.org/security/advisories/CVE-2023-6918.txt ↗
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LZQVUHWVWRH73YBXUQJOD6CKHDQBU3DM/ ↗
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MKQRBF3DWMWPH36LBCOBUTSIZRTPEZXB/ ↗
- https://security.netapp.com/advisory/ntap-20250214-0009/ ↗