Medium severity5.5NVD Advisory· Published Dec 18, 2023· Updated Jul 14, 2026

CVE-2023-51384

Description

In ssh-agent in OpenSSH before 9.6, certain destination constraints can be incompletely applied. When destination constraints are specified during addition of PKCS#11-hosted private keys, these constraints are only applied to the first key, even if a PKCS#11 token returns multiple keys.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

OpenBSD/OpenSSH
cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*
Range: >=8.9,<9.6
Debian/linux2 versions
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*
OpenSSH/OpenSSHdescription
OpenSSH/OpenSSHllm-fuzzy
Range: <9.6
OpenSSH/ssh-agentllm-fuzzy
Range: <9.6

Patches

Vulnerability mechanics

References

github.com/openssh/openssh-portable/commit/881d9c6af9da4257c69c327c4e2f1508b2fa754bnvdPatchThird Party Advisory
seclists.org/fulldisclosure/2024/Mar/21nvdMailing ListThird Party Advisory
security.netapp.com/advisory/ntap-20240105-0005/nvdThird Party Advisory
support.apple.com/kb/HT214084nvdThird Party Advisory
www.debian.org/security/2023/dsa-5586nvdThird Party Advisory
www.openssh.com/txt/release-9.6nvdRelease Notes
www.openwall.com/lists/oss-security/2023/12/18/2nvdMailing ListRelease Notes
cert-portal.siemens.com/productcert/html/ssa-019113.htmlnvd
cert-portal.siemens.com/productcert/html/ssa-082556.htmlnvd
cert-portal.siemens.com/productcert/html/ssa-769027.htmlnvd
cert-portal.siemens.com/productcert/html/ssa-794697.htmlnvd

News mentions

Siemens SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP
CISA ICS Advisories

cvss	0.358
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000