CVE-2022-2735

Description

A vulnerability was found in the PCS project. This issue occurs due to incorrect permissions on a Unix socket used for internal communication between PCS daemons. A privilege escalation could happen by obtaining an authentication token for a hacluster user. With the "hacluster" token, this flaw allows an attacker to have complete control over the cluster managed by PCS.

CVSS Metrics

• v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.05%• Percentile: 16%

Techniques & Countermeasures

• CWE-276•Incorrect Default Permissions

  During installation, installed file permissions are set to allow anyone to modify those files.

Affected Systems

• clusterlabs•pcs

  ≥ 0.10.5, ≤ 0.11.3

• debian•debian_linux

  11.0

References (4)

• https://bugzilla.redhat.com/show_bug.cgi?id=2116815
• https://www.openwall.com/lists/oss-security/2022/09/01/4
• https://access.redhat.com/security/cve/CVE-2022-2735
• https://www.debian.org/security/2022/dsa-5226