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Red Hat 7: RHSA-2016-2614-01 Important: Pacemaker Privilege Escalation

red hat
Calendar Grey November 3, 2016
Scroller Redhat
The crucial notification from Red Hat presents a security patch for pacemaker aimed at resolving privilege elevation vulnerabilities and implementing necessary corrections.
An update for pacemaker is now available for Red Hat Enterprise Linux 7

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Summary

The Pacemaker cluster 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.
Security Fix(es):
* An authorization flaw was found in Pacemaker, where it did not properly guard its IPC interface. An attacker with an unprivileged account on a Pacemaker node could use this flaw to, for example, force the Local Resource Manager daemon to execute a script as root and thereby gain root access on the machine. (CVE-2016-7035)
This issue was discovered by Jan "poki" Pokorny (Red Hat) and Alain Moulle (ATOS/BULL).
Bug Fix(es):
* The version of Pacemaker in Red Hat Enterprise Linux 7.3 incorporated an increase in the version number of the remote node protocol. Consequently, cluster nodes running Pacemaker in Red Hat Enterprise Linux 7.3 and remote nodes running earlier versions of Red Hat Enterprise Linux were not able to communicate with each other unless special precautions were taken. This update preserves the rolling upgrade capability. (BZ#1389023)

Topics%20covered

Topics Covered

security advisory privilege escalation bug fix Red Hat Enterprise Linux important authorization issue pacemaker

References

https://access.redhat.com/security/cve/CVE-2016-7035 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Server High Availability (v. 7):
Source: pacemaker-1.1.15-11.el7_3.2.src.rpm
s390x: pacemaker-1.1.15-11.el7_3.2.s390x.rpm pacemaker-cli-1.1.15-11.el7_3.2.s390x.rpm pacemaker-cluster-libs-1.1.15-11.el7_3.2.s390x.rpm pacemaker-cts-1.1.15-11.el7_3.2.s390x.rpm pacemaker-debuginfo-1.1.15-11.el7_3.2.s390x.rpm pacemaker-doc-1.1.15-11.el7_3.2.s390x.rpm pacemaker-libs-1.1.15-11.el7_3.2.s390x.rpm pacemaker-libs-devel-1.1.15-11.el7_3.2.s390x.rpm pacemaker-nagios-plugins-metadata-1.1.15-11.el7_3.2.s390x.rpm pacemaker-remote-1.1.15-11.el7_3.2.s390x.rpm
x86_64: pacemaker-1.1.15-11.el7_3.2.x86_64.rpm pacemaker-cli-1.1.15-11.el7_3.2.x86_64.rpm pacemaker-cluster-libs-1.1.15-11.el7_3.2.i686.rpm pacemaker-cluster-libs-1.1.15-11.el7_3.2.x86_64.rpm pacemaker-cts-1.1.15-11.el7_3.2.x86_64.rpm pacemaker-debuginfo-1.1.15-11.el7_3.2.i686.rpm pacemaker-debuginfo-1.1.15-11.el7_3.2.x86_64.rpm pacemaker-doc-1.1.15-11.el7_3.2.x86_64.rpm pacemaker-libs-1.1.15-11.el7_3.2.i686.rpm pacemaker-libs-1.1.15-11.el7_3.2.x86_64.rpm pacemaker-libs-devel-1.1.15-11.el7_3.2.i686.rpm pacemaker-libs-devel-1.1.15-11.el7_3.2.x86_64.rpm pacemaker-nagios-plugins-metadata-1.1.15-11.el7_3.2.x86_64.rpm pacemaker-remote-1.1.15-11.el7_3.2.x86_64.rpm
Red Hat Enterprise Linux Server Resilient Storage (v. 7):

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2016:2614-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2016:2614.html
Issue date: 2016-11-03

Topic

An update for pacemaker is now available for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory privilege escalation bug fix Red Hat Enterprise Linux important authorization issue pacemaker

Relevant Releases Architectures

Red Hat Enterprise Linux Server High Availability (v. 7) - s390x, x86_64

Red Hat Enterprise Linux Server Resilient Storage (v. 7) - s390x, x86_64

Bugs Fixed

1369732 - CVE-2016-7035 pacemaker: Privilege escalation due to improper guarding of IPC communication

1389023 - Repair rolling upgrades from 7.2 -> 7.3

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