The Linux-PAM package before 1.5.2-6.1 for openSUSE Tumbleweed allows authentication…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-287.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
Not affected: 3 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2022-28321
- 2026-10-03 Alias added: GHSA-p9vf-jjj8-m5r9
References
More Linux-pam vulnerabilities
- TI-2020-16865 Improper authentication in pam CVSS 3.1CRITICAL 9.8
- TI-2015-02867 The _unix_run_helper_binary function in the pam_unix module in Linux-PAM (aka pam) before… CVSS 3.0MEDIUM 6.5
- TI-2014-02069 Multiple directory traversal vulnerabilities in pam_timestamp.c in the pam_timestamp… CVSS 2.0MEDIUM 5.8
- TI-2009-00845 Integer signedness error in the _pam_StrTok function in libpam/pam_misc.c in Linux-PAM… CVSS 2.0MEDIUM 6.6
- TI-2010-04431 The pam_env module in Linux-PAM (aka pam) 1.1.2 and earlier reads the .pam_environment… CVSS 2.0HIGH 7.2
- TI-2010-03660 pam_namespace.c in the pam_namespace module in Linux-PAM (aka pam) before 1.1.3 uses the… CVSS 2.0MEDIUM 6.9
Sources
- CVE-2022-28321 · CVE Program
- CVE-2022-28321 · NVD
- FIRST EPSS
- GHSA-p9vf-jjj8-m5r9 · GitHub Advisory Database · CC BY 4.0
- CVE-2022-28321 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences