CVE-2022-2735

Publication date 6 September 2022

Last updated 3 July 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.8 · High

Score breakdown

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
pcs 25.10 questing
Not affected
25.04 plucky
Not affected
24.10 oracular
Not affected
24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar
Not affected
22.10 kinetic Ignored end of life, was needed
22.04 LTS jammy
Fixed 0.10.11-2ubuntu3+esm1
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Fixed 0.9.149-1ubuntu1.1+esm1
14.04 LTS trusty Not in release

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Notes

mdeslaur

per upstream, introduced in 0.10.5

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
pcs

Severity score breakdown

Parameter Value
Base score 7.8 · High
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

References

Related Ubuntu Security Notices (USN)

Other references