CVE-2023-6918

Name
CVE-2023-6918
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.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
secalert@redhat.com https://access.redhat.com/security/cve/CVE-2023-6918
secalert@redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2254997
secalert@redhat.com https://www.libssh.org/2023/12/18/libssh-0-10-6-and-libssh-0-9-8-security-releases/
secalert@redhat.com https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MKQRBF3DWMWPH36LBCOBUTSIZRTPEZXB/
secalert@redhat.com https://www.libssh.org/security/advisories/CVE-2023-6918.txt
secalert@redhat.com https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LZQVUHWVWRH73YBXUQJOD6CKHDQBU3DM/
secalert@redhat.com https://access.redhat.com/errata/RHSA-2024:2504
secalert@redhat.com https://access.redhat.com/errata/RHSA-2024:3233
af854a3a-2127-422b-91ae-364da2661108 https://security.netapp.com/advisory/ntap-20250214-0009/

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:* libssh >= 0.9.0 < 0.9.8
cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:* libssh >= 0.10.0 < 0.10.6

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
libssh edge-community 0.10.6-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
libssh edge-community 0.9.6-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libssh edge-community 0.9.5-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libssh edge-community 0.9.4-r0 None possibly vulnerable
libssh edge-community 0.9.3-r0 None possibly vulnerable
libssh 3.22-community 0.10.6-r0 None fixed
libssh 3.22-community 0.9.6-r0 None possibly vulnerable
libssh 3.22-community 0.9.5-r0 None possibly vulnerable
libssh 3.22-community 0.9.4-r0 None possibly vulnerable
libssh 3.22-community 0.9.3-r0 None possibly vulnerable
libssh 3.21-community 0.10.6-r0 None fixed
libssh 3.20-community 0.10.6-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
libssh 3.19-community 0.10.6-r0 Natanael Copa <ncopa@alpinelinux.org> fixed