Bug 891922 - (CVE-2013-0281) CVE-2013-0281 pacemaker: remote DoS when CIB management is enabled caused by use of blocking sockets
CVE-2013-0281 pacemaker: remote DoS when CIB management is enabled caused by ...
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
low Severity low
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Assigned To: Red Hat Product Security
impact=low,public=20130214,reported=2...
: Security
Depends On: 891766 911291
Blocks: 891925 974906
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Reported: 2013-01-04 08:44 EST by Jan Lieskovsky
Modified: 2015-07-31 06:42 EDT (History)
6 users (show)

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Doc Type: Bug Fix
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Last Closed: 2013-11-22 00:20:30 EST
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RHEL 7.3 requirements from Atomic Host:


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Description Jan Lieskovsky 2013-01-04 08:44:18 EST
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.
Comment 1 Jan Lieskovsky 2013-01-04 08:46:15 EST
This issue was found by David Vossel of Red Hat.
Comment 3 Jan Lieskovsky 2013-01-04 08:59:46 EST
This issue affects the version of the pacemaker package, as shipped with Red Hat Enterprise Linux 6.

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This issue affects the versions of the pacemaker package, as shipped with Fedora release of 16 and 17.
Comment 4 Jan Lieskovsky 2013-02-13 10:38:59 EST
The CVE identifier of CVE-2013-0281 has been assigned to this issue.
Comment 5 Jan Lieskovsky 2013-02-14 05:27:46 EST
Relevant upstream patch:
https://github.com/ClusterLabs/pacemaker/commit/564f7cc2a51dcd2f28ab12a13394f31be5aa3c93
Comment 6 Jan Lieskovsky 2013-02-14 11:41:57 EST
Created pacemaker tracking bugs for this issue

Affects: fedora-all [bug 911291]
Comment 8 errata-xmlrpc 2013-11-21 06:55:19 EST
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2013:1635 https://rhn.redhat.com/errata/RHSA-2013-1635.html
Comment 9 Huzaifa S. Sidhpurwala 2013-11-22 00:20:30 EST
Statement:

(none)

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