GLSA 200608-23: Heartbeat: Denial of Service

http://security.gentoo.org/

Severity:	normal
Title:	Heartbeat: Denial of Service
Date:	08/24/2006
Bugs:	#141894
ID:	200608-23

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	Architecture(s)
sys-cluster/heartbeat	< 2.0.7	>= 2.0.7	All supported architectures

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

References

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 https://bugs.gentoo.org.