Improper authentication in ClusterLabs pcs

1) Improper Authentication

EUVDB-ID: #VU67056

Risk: Medium

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-1049

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote user to bypass authentication process.

The vulnerability exists due to pcs daemon allows expired accounts, and accounts with expired passwords to login when using PAM authentication. A remote user with an expired account can still access to the application.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

pcs: 0.10 - 0.11.2

External links

http://huntr.dev/bounties/7aa921fc-a568-4fd8-96f4-7cd826246aa5
http://www.debian.org/security/2022/dsa-5226

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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