Debian Security Advisory

DLA-2447-1 pacemaker -- LTS security update

Date Reported:
12 Nov 2020
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 973254.
In Mitre's CVE dictionary: CVE-2020-25654.
More information:

An ACL bypass flaw was found in pacemaker, a cluster resource manager. An attacker having a local account on the cluster and in the haclient group could use IPC communication with various daemons directly to perform certain tasks that they would be prevented by ACLs from doing if they went through the configuration.

For Debian 9 stretch, this problem has been fixed in version 1.1.16-1+deb9u1.

We recommend that you upgrade your pacemaker packages.

For the detailed security status of pacemaker please refer to its security tracker page at:

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: