GLSA 200508-05: Heartbeat: Insecure temporary file creation
Posted on: 08/07/2005 03:22 AM

A Heartbeat security update has been released for Gentoo Linux

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Gentoo Linux Security Advisory GLSA 200508-05
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http://security.gentoo.org/
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Severity: Normal
Title: Heartbeat: Insecure temporary file creation
Date: August 07, 2005
Bugs: #97175
ID: 200508-05

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Synopsis
=======

Heartbeat is vulnerable to symlink attacks, potentially allowing a local user to overwrite arbitrary files.

Background
=========

Heartbeat is a component of the High-Availability Linux project. It it used to perform death-of-node detection, communications and cluster management.

Affected packages
================

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Package / Vulnerable / Unaffected
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1 sys-cluster/heartbeat lt; 1.2.3-r1 gt;= 1.2.3-r1

Description
==========

Eric Romang has discovered that Heartbeat insecurely creates temporary files with predictable filenames.

Impact
=====

A local attacker could create symbolic links in the temporary file directory, pointing to a valid file somewhere on the filesystem. When a vulnerable script is executed, this could lead to the file being overwritten with the rights of the user running the affected application.

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 "gt;=sys-cluster/heartbeat-1.2.3-r1"

References
=========

[ 1 ] CAN-2005-2231
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2231

Availability
===========

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200508-05.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 2005 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/2.0


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