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Gentoo Linux Security Advisory GLSA 200608-23
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http://security.gentoo.org/
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Severity: Normal
Title: Heartbeat: Denial of Service
Date: August 24, 2006
Bugs: #141894
ID: 200608-23
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Synopsis
========
Heartbeat is vulnerable to a Denial of Service which can be triggered
by a remote attacker without authentication.
Background
==========
Heartbeat is a component of the High-Availability Linux project. It is
used to perform death-of-node detection, communications and cluster
management.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 sys-cluster/heartbeat < 2.0.7 >= 2.0.7
Description
===========
Yan Rong Ge discovered that the peel_netstring() function in
cl_netstring.c does not validate the "length" parameter of user input,
which can lead to an out-of-bounds memory access when processing
certain Heartbeat messages (CVE-2006-3121). Furthermore an unspecified
local DoS issue was fixed (CVE-2006-3815).
Impact
======
By sending a malicious UDP Heartbeat message, even before
authentication, a remote attacker can crash the master control process
of the cluster.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All Heartbeat users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-cluster/heartbeat-2.0.7"
References
==========
[ 1 ] CVE-2006-3121
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3121
[ 2 ] CVE-2006-3815
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3815
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200608-23.xml
Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.
License
=======
Copyright 2006 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.5
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