Medium severity6.5NVD Advisory· Published May 26, 2023· Updated Jun 17, 2026
CVE-2023-1667
CVE-2023-1667
Description
A NULL pointer dereference was found In libssh during re-keying with algorithm guessing. This issue may allow an authenticated client to cause a denial of service.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
37- cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
- osv-coords30 versionspkg: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
< 0.9.6-10.el8_8+ 29 more
- (no CPE)range: < 0.9.6-10.el8_8
- (no CPE)range: < 0.9.6-10.el8_8
- (no CPE)range: < 0.9.6-10.el8_8
- (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: < 0.10.5-1.1
- (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
6- www.libssh.org/security/advisories/CVE-2023-1667.txtnvdVendor Advisory
- access.redhat.com/security/cve/CVE-2023-1667nvdThird Party Advisory
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingThird Party Advisory
- lists.debian.org/debian-lts-announce/2023/05/msg00029.htmlnvdMailing ListThird Party Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/27PD44ALQTZXX7K6JAM3BXBUHYA6DFFN/nvd
- security.gentoo.org/glsa/202312-05nvd
News mentions
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