Authentication Bypass in Linux-PAM for openSUSE Tumbleweed

CVE-2022-28321

What is CVE-2022-28321?

The Linux-PAM package on openSUSE Tumbleweed prior to version 1.5.2-6.1 is susceptible to an authentication bypass vulnerability. This flaw occurs when the pam_access.so module fails to restrict login attempts from non-resolvable IP addresses via DNS. Consequently, users who should be denied access to a machine can potentially gain unauthorized access through SSH logins. It is important to note that this issue primarily affects openSUSE Tumbleweed and openSUSE Factory, with no impact on Linux-PAM upstream versions.

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