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HIGH

pacemaker: Insufficient local IPC client-server authentication on the client's side can lead to local privesc

Published Apr 18, 2019

Description

A flaw was found in the way pacemaker's client-server authentication was implemented in versions up to and including 2.0.0. A local attacker could use this flaw, and combine it with other IPC weaknesses, to achieve local privilege escalation.

Affected products

Remediation

Red Hat statement

This is essentially a design level security flaw which can be combined with other flaws to achieve local privilege escalation for clusters running pacemaker. The attacker needs to have access to the cluster node running pacemaker (AV:L). The attacker can use easily use the design flaw via the confused deputy problem to run the exploit (AC:L), also needs to have login access to the pacemaker node to run the exploit (PR:L). Due to the elevated privileges obtained, there is an impact to the system beyond the pacemaker node itself (S:C). Lastly due to the attacker's ability to run arbitrary code as root, confidentiality, integrity, and availability of the system is affected. (CIA:H)

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Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Apr 18, 2019
Updated Aug 5, 2024
Reserved Sep 11, 2018
NVD
Status Modified
Modified Jun 17, 2026
Red Hat
Severity Important
Public date Apr 17, 2019