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Fencer Vulns
high 7.8

CVE-2022-2735 json

A vulnerability was found in the PCS project.

published 2022-09-06 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-34977

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 24%
public exploits
0
none known

Summary

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.

Patch / fix

  • pcs Debian 14, Debian 13, Debian 12 0.11.3-2

debian advisories DEBIAN-CVE-2022-2735

  • pcs Ubuntu Pro 16.04 LTS 0.9.149-1ubuntu1.1+esm1
  • pcs Ubuntu Pro 22.04 LTS 0.10.11-2ubuntu3+esm1

ubuntu advisories UBUNTU-CVE-2022-2735

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • pcs RHEL 9 0.11.1-10.el9_0.2
  • pcs-snmp RHEL 9 0.11.1-10.el9_0.2
  • pcs RHEL 8 0.10.12-6.el8_6.2
  • pcs-snmp RHEL 8 0.10.12-6.el8_6.2
  • pcs RHEL 8.4 EUS 0.10.8-1.el8_4.2
  • pcs-snmp RHEL 8.4 EUS 0.10.8-1.el8_4.2
  • pcs RHEL 8.2 EUS 0.10.4-6.el8_2.3
  • pcs-snmp RHEL 8.2 EUS 0.10.4-6.el8_2.3

red hat advisories RHSA-2022:6312RHSA-2022:6313RHSA-2022:6314RHSA-2022:6341

  • pcs AlmaLinux 9 0.11.1-10.el9_0.2
  • pcs-snmp AlmaLinux 9 0.11.1-10.el9_0.2
  • pcs AlmaLinux 8 0.10.12-6.el8_6.2.alma
  • pcs-snmp AlmaLinux 8 0.10.12-6.el8_6.2.alma

almalinux advisories ALSA-2022:6313ALSA-2022:6314

  • pcs Rocky Linux 8 0.10.12-6.el8_6.2
  • pcs Rocky Linux 9 0.11.1-10.el9_0.2

rocky linux advisories RLSA-2022:6314RLSA-2022:6313

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-2735 updated cvss 8.4

pcs: obtaining an authentication token for hacluster user could lead to privilege escalation

  • Red Hat Enterprise Linux High Availability (v. 9) pcs 0.11.1-10.el9_0.2, pcs-snmp 0.11.1-10.el9_0.2
    fixed: vendor fix RHSA-2022:6313
  • Red Hat Enterprise Linux High Availability EUS (v. 8.2) pcs 0.10.4-6.el8_2.3, pcs-snmp 0.10.4-6.el8_2.3
    fixed: vendor fix RHSA-2022:6341
  • Red Hat Enterprise Linux HighAvailability (v. 8) pcs 0.10.12-6.el8_6.2, pcs-snmp 0.10.12-6.el8_6.2
    fixed: vendor fix RHSA-2022:6314
  • Red Hat Enterprise Linux HighAvailability EUS (v.8.4) pcs 0.10.8-1.el8_4.2, pcs-snmp 0.10.8-1.el8_4.2
    fixed: vendor fix RHSA-2022:6312
  • Red Hat Enterprise Linux Resilient Storage (v. 9) pcs 0.11.1-10.el9_0.2, pcs-snmp 0.11.1-10.el9_0.2
    fixed: vendor fix RHSA-2022:6313
  • Red Hat Enterprise Linux Resilient Storage EUS (v. 8.2) pcs 0.10.4-6.el8_2.3, pcs-snmp 0.10.4-6.el8_2.3
    fixed: vendor fix RHSA-2022:6341
  • Red Hat Enterprise Linux ResilientStorage (v. 8) pcs 0.10.12-6.el8_6.2, pcs-snmp 0.10.12-6.el8_6.2
    fixed: vendor fix RHSA-2022:6314
  • Red Hat Enterprise Linux ResilientStorage EUS (v.8.4) pcs 0.10.8-1.el8_4.2, pcs-snmp 0.10.8-1.el8_4.2
    fixed: vendor fix RHSA-2022:6312
show 1 more
  • Red Hat Enterprise Linux 7 pcs, pcs-snmp, python-clufter
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.32% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • n/a ClusterLabs/pcs

Classification

Weakness
  • CWE-276 Incorrect Default Permissions

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.