CVE-2022-28321

CRITICAL
Published Sep 19, 20223y ago · Modified Jun 17, 20262w ago
9.8 CVSS 3.1
Critical
Find Similar
Published Sep 19, 2022 3y ago
Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-287 Improper Authentication Authentication

Affected Products 2

VendorProductVersionRange
linux-pamlinux-pam* <1.5.2-6.1
opensusetumbleweed*any

References 3

  • download.opensuse.org http://download.opensuse.org/source/distribution/openSUSE-current/repo/oss/src/
    PatchVendor Advisory
  • bugzilla.suse.com https://bugzilla.suse.com/show_bug.cgi?id=1197654
    Issue TrackingPatchVendor Advisory
  • suse.com https://www.suse.com/security/cve/CVE-2022-28321.html
    Vendor Advisory

Remediation

  • download.opensuse.org http://download.opensuse.org/source/distribution/openSUSE-current/repo/oss/src/
    PatchVendor Advisory
  • bugzilla.suse.com https://bugzilla.suse.com/show_bug.cgi?id=1197654
    Issue TrackingPatchVendor Advisory