CVE-2022-28321

CRITICAL

linux-pam < 1.5.2-6.1 - Authentication Bypass via Unresolvable DNS IP Address

Title source: llm
STIX 2.1

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.

References (3)

Core 3
Core References
Issue Tracking, Patch, Vendor Advisory x_refsource_misc
https://bugzilla.suse.com/show_bug.cgi?id=1197654

Scores

CVSS v3 9.8
EPSS 0.0118
EPSS Percentile 63.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact total

Details

CWE
CWE-287
Status published
Products (1)
linux-pam/linux-pam < 1.5.2-6.1
Published Sep 19, 2022
Tracked Since Feb 18, 2026