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Debian: Security Advisory for pacemaker (DSA-4791-1)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
The remote host is missing an update for the 'pacemaker' package(s) announced via the DSA-4791-1 advisory.
Insight
Insight
Ken Gaillot discovered a vulnerability in the Pacemaker cluster resource manager: If ACLs were configured for users in the haclient group, the ACL restrictions could be bypassed via unrestricted IPC communication, resulting in cluster-wide arbitrary code execution with root privileges. If the enable-acl cluster option isn't enabled, members of the haclient group can modify Pacemaker's Cluster Information Base without restriction, which already gives them these capabilities, so there is no additional exposure in such a setup.
Affected Software
Affected Software
'pacemaker' package(s) on Debian Linux.
Detection Method
Detection Method
Checks if a vulnerable package version is present on the target host.
Solution
Solution
For the stable distribution (buster), this problem has been fixed in version 2.0.1-5+deb10u1. We recommend that you upgrade your pacemaker packages.