[ GLSA 200801-06 ] Xfce: Multiple vulnerabilities

2008-01-1000:00:00

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Gentoo Linux Security Advisory GLSA 200801-06:02

                                        http://security.gentoo.org/

Severity: Normal
Title: Xfce: Multiple vulnerabilities
Date: January 09, 2008
Updated: January 09, 2008
Bugs: #201292, #201293
ID: 200801-06:02

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 &quot;&gt;=xfce-base/xfce4-panel-4.4.2&quot;

All libxfcegui4 users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=xfce-base/libxfcegui4-4.4.2&quot;

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
[email protected] or alternatively, you may file a bug at
http://bugs.gentoo.org.