Low severity3.7NVD Advisory· Published Dec 19, 2023· Updated Jun 17, 2026
CVE-2023-6918
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
50cpe:/o:redhat:enterprise_linux:6+ 5 more
- cpe:/o:redhat:enterprise_linux:6
- cpe:/o:redhat:enterprise_linux:7
- cpe:/o:redhat:enterprise_linux:8::baseosrange: 0:0.9.6-14.el8
- cpe:/o:redhat:enterprise_linux:9::baseosrange: 0:0.10.4-13.el9
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
- osv-coords40 versionspkg:apk/chainguard/libsshpkg:apk/chainguard/libssh-devpkg:apk/chainguard/libssh2pkg:apk/chainguard/libssh2-devpkg:apk/chainguard/libssh2-docpkg:apk/wolfi/libsshpkg:apk/wolfi/libssh-devpkg:apk/wolfi/libssh2pkg:apk/wolfi/libssh2-devpkg:apk/wolfi/libssh2-docpkg:rpm/almalinux/libsshpkg:rpm/almalinux/libssh-configpkg:rpm/almalinux/libssh-develpkg:rpm/opensuse/libssh&distro=openSUSE%20Leap%2015.5pkg:rpm/opensuse/libssh&distro=openSUSE%20Leap%20Micro%205.3pkg:rpm/opensuse/libssh&distro=openSUSE%20Leap%20Micro%205.4pkg:rpm/opensuse/libssh&distro=openSUSE%20Tumbleweedpkg:rpm/suse/libssh&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSSpkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Micro%205.2pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Micro%205.4pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP5pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2015%20SP4pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/libssh&distro=SUSE%20Manager%20Proxy%204.3pkg:rpm/suse/libssh&distro=SUSE%20Manager%20Server%204.3
< 0.10.6-r0+ 39 more
- (no CPE)range: < 0.10.6-r0
- (no CPE)range: < 0.10.6-r0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0.10.6-r0
- (no CPE)range: < 0.10.6-r0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0.10.4-13.el9
- (no CPE)range: < 0.10.4-13.el9
- (no CPE)range: < 0.10.4-13.el9
- (no CPE)range: < 0.9.8-150400.3.3.1
- (no CPE)range: < 0.9.8-150400.3.3.1
- (no CPE)range: < 0.9.8-150400.3.3.1
- (no CPE)range: < 0.10.6-1.1
- (no CPE)range: < 0.9.8-150200.13.3.1
- (no CPE)range: < 0.9.8-150200.13.3.1
- (no CPE)range: < 0.9.8-150200.13.3.1
- (no CPE)range: < 0.9.8-150400.3.3.1
- (no CPE)range: < 0.9.8-150400.3.3.1
- (no CPE)range: < 0.9.8-150200.13.3.1
- (no CPE)range: < 0.9.8-150200.13.3.1
- (no CPE)range: < 0.9.8-150400.3.3.1
- (no CPE)range: < 0.9.8-150400.3.3.1
- (no CPE)range: < 0.9.8-150400.3.3.1
- (no CPE)range: < 0.9.8-150400.3.3.1
- (no CPE)range: < 0.9.8-150400.3.3.1
- (no CPE)range: < 0.9.8-3.12.2
- (no CPE)range: < 0.9.8-150200.13.3.1
- (no CPE)range: < 0.9.8-150200.13.3.1
- (no CPE)range: < 0.9.8-150400.3.3.1
- (no CPE)range: < 0.9.8-3.12.2
- (no CPE)range: < 0.9.8-150200.13.3.1
- (no CPE)range: < 0.9.8-150200.13.3.1
- (no CPE)range: < 0.9.8-150400.3.3.1
- (no CPE)range: < 0.9.8-3.12.2
- (no CPE)range: < 0.9.8-150400.3.3.1
- (no CPE)range: < 0.9.8-150400.3.3.1
Patches
Vulnerability mechanics
References
9- access.redhat.com/security/cve/CVE-2023-6918nvdMailing ListVendor Advisory
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingThird Party Advisory
- www.libssh.org/security/advisories/CVE-2023-6918.txtnvdVendor Advisory
- www.libssh.org/2023/12/18/libssh-0-10-6-and-libssh-0-9-8-security-releases/nvdRelease Notes
- access.redhat.com/errata/RHSA-2024:2504nvd
- access.redhat.com/errata/RHSA-2024:3233nvd
- lists.fedoraproject.org/archives/list/[email protected]/message/LZQVUHWVWRH73YBXUQJOD6CKHDQBU3DM/nvd
- lists.fedoraproject.org/archives/list/[email protected]/message/MKQRBF3DWMWPH36LBCOBUTSIZRTPEZXB/nvd
- security.netapp.com/advisory/ntap-20250214-0009/nvd
News mentions
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