CVE-2023-51384

low-risk
Published 2023-12-18

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.

Do I need to act?

-
0.04% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (3)

Affected Vendors

Debian Openbsd

References (14)

Mailing List http://seclists.org/fulldisclosure/2024/Mar/21
Patch https://github.com/openssh/openssh-portable/commit/881d9c6af9da4257c69c327c4e2f1...
Third Party Advisory https://security.netapp.com/advisory/ntap-20240105-0005/
Third Party Advisory https://support.apple.com/kb/HT214084
Third Party Advisory https://www.debian.org/security/2023/dsa-5586
Release Notes https://www.openssh.com/txt/release-9.6
Mailing List https://www.openwall.com/lists/oss-security/2023/12/18/2
Mailing List http://seclists.org/fulldisclosure/2024/Mar/21
Patch https://github.com/openssh/openssh-portable/commit/881d9c6af9da4257c69c327c4e2f1...
Third Party Advisory https://security.netapp.com/advisory/ntap-20240105-0005/
Third Party Advisory https://support.apple.com/kb/HT214084
Third Party Advisory https://www.debian.org/security/2023/dsa-5586
Release Notes https://www.openssh.com/txt/release-9.6
Mailing List https://www.openwall.com/lists/oss-security/2023/12/18/2
27
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 9/34 · Low