CVE-2018-1079: Clusterlabs Pacemaker Command Line Interface

Medium severity, CVSS 6.5. EPSS: 1.1% chance of exploitation in the next 30 days.

pcs before version 0.9.164 and 0.10 is vulnerable to a privilege escalation via authorized user malicious REST call. The REST interface of the pcsd service did not properly sanitize the file name from the /remote/put_file query. If the /etc/booth directory exists, an authenticated attacker with write permissions could create or overwrite arbitrary files with arbitrary data outside of the /etc/booth directory, in the context of the pcsd process.

Affected products

• Clusterlabs Pacemaker Command Line Interface: up to and including 0.9.164; version 0.10 only
• Red Hat Enterprise Linux: version 7.0 only; version 7.5 only

Published 2018-04-12. Last modified 2026-06-17.