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CVE-2022-2735

Published: 6 September 2022

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.

Notes

AuthorNote
mdeslaur
per upstream, introduced in 0.10.5

Priority

Medium

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package Release Status
pcs
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(0.9.164-1)
focal Not vulnerable
(0.10.4-3)
jammy Needed

kinetic Ignored
(end of life, was needed)
lunar Not vulnerable
(0.11.4-1ubuntu3)
mantic Not vulnerable
(0.11.4-1ubuntu3)
trusty Does not exist

upstream
Released (0.11.3-2,0.11.4)
xenial Needs triage

Patches:
upstream: https://github.com/ClusterLabs/pcs/commit/de068e2066e377d1cc77edf25aed0198e4c77f7b

Severity score breakdown

Parameter Value
Base score 7.8
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H