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CVE-2022-28321

Status Candidate

Overview

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.

Related Files

Ubuntu Security Notice USN-5825-2
Posted Feb 6, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5825-2 - USN-5825-1 fixed vulnerabilities in PAM. Unfortunately that update was incomplete and could introduce a regression. This update fixes the problem. It was discovered that PAM did not correctly restrict login from an IP address that is not resolvable via DNS. An attacker could possibly use this issue to bypass authentication.

tags | advisory, vulnerability
systems | linux, ubuntu
advisories | CVE-2022-28321
SHA-256 | 7f177f2fcd2276c915de560cfcdaae5a44f2f39f4cf639638eb1f5c64b2cd35b
Ubuntu Security Notice USN-5825-1
Posted Jan 25, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5825-1 - It was discovered that PAM did not correctly restrict login from an IP address that is not resolvable via DNS. An attacker could possibly use this issue to bypass authentication.

tags | advisory
systems | linux, ubuntu
advisories | CVE-2022-28321
SHA-256 | f13db8e65182ef2c2505daf3f7d5118b02318c3c4f7eef88e5d1a4893e03d2ea
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