Home / mailings [gentoo-announce] [ GLSA 200801-06 ] Xfce: Multiple vulnerabilities
Posted on 10 January 2008
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Gentoo Linux Security Advisory GLSA 200801-06:02
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http://security.gentoo.org/
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Severity: Normal
Title: Xfce: Multiple vulnerabilities
Date: January 09, 2008
Updated: January 09, 2008
Bugs: #201292, #201293
ID: 200801-06:02
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Synopsis
========
Multiple vulnerabilities in Xfce might allow user-assisted attackers to
execute arbitrary code.
Background
==========
Xfce is a GTK+ 2 based desktop environment that allows to run a modern
desktop environment on modest hardware.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 xfce-base/xfce4-panel < 4.4.2 >= 4.4.2
2 xfce-base/libxfcegui4 < 4.4.2 >= 4.4.2
-------------------------------------------------------------------
2 affected packages on all of their supported architectures.
-------------------------------------------------------------------
Description
===========
Gregory Andersen reported that the Xfce4 panel does not correctly
calculate memory boundaries, leading to a stack-based buffer overflow
in the launcher_update_panel_entry() function (CVE-2007-6531). Daichi
Kawahata reported libxfcegui4 did not copy provided values when
creating "SessionClient" structs, possibly leading to access of freed
memory areas (CVE-2007-6532).
Impact
======
A remote attacker could entice a user to install a specially crafted
"rc" file to execute arbitrary code via long strings in the "Name" and
"Comment" fields or via unspecified vectors involving the second
vulnerability.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All Xfce4 panel users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=xfce-base/xfce4-panel-4.4.2"
All libxfcegui4 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=xfce-base/libxfcegui4-4.4.2"
Please refer to the Upgrading section of the Xfce Configuration Guide
in case you are upgrading from Xfce 4.2.
References
==========
[ 1 ] CVE-2007-6531
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6531
[ 2 ] CVE-2007-6532
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6532
[ 3 ] Xfce Configuration Guide
http://www.gentoo.org/doc/en/xfce-config.xml
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200801-06.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 2008 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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