5.3

CVE-2023-6918

Libssh: missing checks for return values for digests

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Libssh ≫ Libssh Version >= 0.9.0 < 0.9.8
Libssh ≫ Libssh Version >= 0.10.0 < 0.10.6
Fedoraproject ≫ Fedora Version 38
Fedoraproject ≫ Fedora Version 39
Redhat ≫ Enterprise Linux Version 8.0
Redhat ≫ Enterprise Linux Version 9.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 1.41% 0.697
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 5.3 3.9 1.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
RedHat 3.7 2.2 1.4
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE-252 Unchecked Return Value

The product does not check the return value from a method or function, which can prevent it from detecting unexpected states and conditions.

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
Vendor Advisory
Mailing List
https://bugzilla.redhat.com/show_bug.cgi?id=2254997
Third Party Advisory
Issue Tracking
https://www.libssh.org/2023/12/18/libssh-0-10-6-and-libssh-0-9-8-security-releases/
Release Notes
https://www.libssh.org/security/advisories/CVE-2023-6918.txt
Vendor Advisory
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/