CVE-2022-28321

NameCVE-2022-28321
DescriptionThe Linux-PAM package before 1.5.2-6.1 for openSUSE Tumbleweed allows authentication bypass for SSH logins. The pam_access.so module doesn't correctly restrict login if a user tries to connect from an IP address that is not resolvable via DNS. In such conditions, a user with denied access to a machine can still get access. NOTE: the relevance of this issue is largely limited to openSUSE Tumbleweed and openSUSE Factory; it does not affect Linux-PAM upstream.
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
pam (PTS)jessie1.1.8-3.1+deb8u2fixed
stretch1.1.8-3.6fixed
buster1.3.1-5fixed
bullseye1.4.0-9+deb11u1fixed
bookworm1.5.2-6+deb12u1fixed
sid, trixie1.5.3-7fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
pamsource(unstable)(not affected)

Notes

- pam <not-affected> (Vulnerability introduced to SUSE-specific patch)
https://bugzilla.suse.com/show_bug.cgi?id=1197654

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