CVE-2022-28321 Auth bypass in n/a
Attackers can bypass SSH access restrictions in openSUSE Tumbleweed if their IP address is not resolvable via DNS, allowing unauthorized login.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-28321?
CVE-2022-28321 is a critical authentication bypass vulnerability in n/a, published on 19 Sep 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-287
Which versions are affected by CVE-2022-28321?
It affects 1 product.
Products include Linux-Pam Linux-Pam.
How do I fix CVE-2022-28321?
Apply the vendor's patch.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2022-28321 being exploited?
There is no known exploitation of CVE-2022-28321 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as CLSA-2023-1675111190, GHSA-p9vf-jjj8-m5r9, UBUNTU-CVE-2022-28321, USN-5825-1, USN-5825-2.