pacemaker security update

CentOS Errata and Security Advisory CESA-2015:1424

The Pacemaker Resource Manager is a collection of technologies working
together to provide data integrity and the ability to maintain application
availability in the event of a failure.

A flaw was found in the way pacemaker, a cluster resource manager,
evaluated added nodes in certain situations. A user with read-only access
could potentially assign any other existing roles to themselves and then
add privileges to other users as well. (CVE-2015-1867)

This update also fixes the following bugs:

• Due to a race condition, nodes that gracefully shut down occasionally had
  difficulty rejoining the cluster. As a consequence, nodes could come online
  and be shut down again immediately by the cluster. This bug has been fixed,
  and the “shutdown” attribute is now cleared properly. (BZ#1198638)

• Prior to this update, the pacemaker utility caused an unexpected
  termination of the attrd daemon after a system update to Red Hat Enterprise
  Linux 6.6. The bug has been fixed so that attrd no longer crashes when
  pacemaker starts. (BZ#1205292)

• Previously, the access control list (ACL) of the pacemaker utility
  allowed a role assignment to the Cluster Information Base (CIB) with a
  read-only permission. With this update, ACL is enforced and can no longer
  be bypassed by the user without the write permission, thus fixing this bug.
  (BZ#1207621)

• Prior to this update, the ClusterMon (crm_mon) utility did not trigger an
  external agent script with the “-E” parameter to monitor the Cluster
  Information Base (CIB) when the pacemaker utility was used. A patch has
  been provided to fix this bug, and crm_mon now calls the agent script when
  the “-E” parameter is used. (BZ#1208896)

Users of pacemaker are advised to upgrade to these updated packages, which
contain backported patches to correct these issues.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-cr-announce/2015-July/028304.html

Affected packages:
pacemaker
pacemaker-cli
pacemaker-cluster-libs
pacemaker-cts
pacemaker-doc
pacemaker-libs
pacemaker-libs-devel
pacemaker-remote

Upstream details at:
https://access.redhat.com/errata/RHSA-2015:1424