The 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.
Fix
Patch, vendor advisory and mitigation references on NVD 6
- http://download.opensuse.org/source/distribution/openSUSE-current/repo/oss/src/ Patch, Vendor Advisory
- https://bugzilla.suse.com/show_bug.cgi?id=1197654 Issue Tracking, Patch, Vendor Advisory
- https://www.suse.com/security/cve/CVE-2022-28321.html Vendor Advisory
- http://download.opensuse.org/source/distribution/openSUSE-current/repo/oss/src/ Patch, Vendor Advisory
- https://bugzilla.suse.com/show_bug.cgi?id=1197654 Issue Tracking, Patch, Vendor Advisory
- https://www.suse.com/security/cve/CVE-2022-28321.html Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 9.8 · linux-pamNVD modified 2026-10-14 17:17
Affected (CPE criteria) 1
cpe:2.3:a:linux-pam:linux-pam:*:*:*:*:*:*:*:*
References 7
- http://download.opensuse.org/source/distribution/openSUSE-current/repo/oss/src/ Patch, Vendor Advisory
- https://bugzilla.suse.com/show_bug.cgi?id=1197654 Issue Tracking, Patch, Vendor Advisory
- https://www.suse.com/security/cve/CVE-2022-28321.html Vendor Advisory
- http://download.opensuse.org/source/distribution/openSUSE-current/repo/oss/src/ Patch, Vendor Advisory
- https://bugzilla.suse.com/show_bug.cgi?id=1197654 Issue Tracking, Patch, Vendor Advisory
- https://www.suse.com/security/cve/CVE-2022-28321.html Vendor Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html