CVE-2023-51384

NameCVE-2023-51384
DescriptionIn 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
openssh (PTS)buster1:7.9p1-10+deb10u2fixed
buster (security)1:7.9p1-10+deb10u4fixed
bullseye (security), bullseye1:8.4p1-5+deb11u3fixed
bookworm, bookworm (security)1:9.2p1-2+deb12u2fixed
sid, trixie1:9.6p1-4fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
opensshsourcebuster(not affected)
opensshsourcebullseye(not affected)
opensshsourcebookworm1:9.2p1-2+deb12u2
opensshsource(unstable)1:9.6p1-1

Notes

[bullseye] - openssh <not-affected> (Vulnerable code introduced later; per-hop destination constraints support added in OpenSSH 8.9)
[buster] - openssh <not-affected> (Vulnerable code introduced later; per-hop destination constraints support added in OpenSSH 8.9)
https://www.openwall.com/lists/oss-security/2023/12/18/2
https://github.com/openssh/openssh-portable/commit/881d9c6af9da4257c69c327c4e2f1508b2fa754b (V_9_6_P1)

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