CVE-2013-0281
First published: Fri Jan 04 2013(Updated: )
A denial of service flaw was found in the way Pacemaker, an advanced, scalable high-availability cluster resource manager for Linux-HA (Heartbeat) and/or Corosync, performed authentication and processing of remote connections in certain circumstances. In general Pacemaker used a blocking socket (without a timeout) to wait for authentication credentials to arrive. When Pacemaker was configured to allow remote Cluster Information Base (CIB) cluster's configuration / cluster's resources management, a remote attacker could use this flaw to cause Pacemaker to block indefinitely (preventing it from serving another requests). Important Note: In the default configuration of Pacemaker in Red Hat Enterprise Linux 6 the remote CIB management feature / functionality is turned off.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Red Hat Enterprise Linux | =6.0 | |
| Clusterlabs Pacemaker Command Line Interface | =1.1.10 |
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Reference Links
- https://access.redhat.com/security/cve/CVE-2013-0281
- https://github.com/ClusterLabs/pacemaker/commit/564f7cc2a51dcd2f28ab12a13394f31be5aa3c93
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=911291
- https://rhn.redhat.com/errata/RHSA-2013-1635.html
- https://bugzilla.redhat.com/show_bug.cgi?id=891922
- http://rhn.redhat.com/errata/RHSA-2013-1635.html
Frequently Asked Questions
What is the severity of CVE-2013-0281?
CVE-2013-0281 is classified as a denial of service vulnerability.
How do I fix CVE-2013-0281?
To fix CVE-2013-0281, update Pacemaker to version 1.1.11 or later.
What software is affected by CVE-2013-0281?
CVE-2013-0281 affects Red Hat Enterprise Linux 6.0 and Pacemaker version 1.1.10.
What happens if CVE-2013-0281 is exploited?
Exploitation of CVE-2013-0281 can lead to a denial of service, impacting the availability of managed resources.
Is CVE-2013-0281 a critical vulnerability?
CVE-2013-0281 is not classified as critical but still poses a significant risk to service availability.
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