#VU100912 Improper authentication in linux-pam - CVE-2024-10963

Vulnerability identifier: #VU100912

Vulnerability risk: Medium

CVSSv4.0: 6.9 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-10963

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
linux-pam
Other software / Other software solutions

Vendor: git.kernel.org

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in pam_access module where certain rules in its configuration file are mistakenly treated as hostnames. A remote attacker can bypass authentication process and gain unauthorized access to the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

linux-pam: 0.99.1.0 - 1.6.1

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External links
https://access.redhat.com/security/cve/CVE-2024-10963
https://bugzilla.redhat.com/show_bug.cgi?id=2324291

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.