[ GLSA 200705-10 ] LibXfont, TightVNC: Multiple vulnerabilities
Date: Tue, 8 May 2007 17:50:28 +0200
From: Raphael Marichez <falco@gentoo.org.>
To: gentoo-announce@gentoo.org
Subject: [ GLSA 200705-10 ] LibXfont, TightVNC: Multiple vulnerabilities
Message-ID: <20070508155028.GA31915@falco.falcal.net.>
Mail-Followup-To: gentoo-announce@gentoo.org,
bugtraq@securityfocus.com, full-disclosure@lists.grok.org.uk,
security-alerts@linuxsecurity.com
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha1;
protocol="application/pgp-signature"; boundary="wRRV7LY7NUeQGEoC"
Content-Disposition: inline
X-Web: http://falco.bz/
X-GPG-fingerprint: 04EB 153A 6B28 3E80 87A9 9B4F A77C 4BDE 021C 5BD2
X-GPG-Key: http://subkeys.pgp.net:11371/pks/lookup?op=get&search=0x021C5BD2
X-GPG-Subkey: http://subkeys.pgp.net:11371/pks/lookup?op=get&search=0x0114FC45
Organization: Gentoo Linux Security Team
User-Agent: mutt-ng/devel-r804 (Linux)
X-Virus-Scanned: antivirus-gw at tyumen.ru
--wRRV7LY7NUeQGEoC
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 200705-10
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: High
Title: LibXfont, TightVNC: Multiple vulnerabilities
Date: May 08, 2007
Bugs: #172575, #174200
ID: 200705-10
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Synopsis
========
Multiple vulnerabilities have been reported in libXfont and TightVNC,
allowing for the execution of arbitrary code with root privileges.
Background
==========
LibXfont is the X.Org font library. TightVNC is a VNC client/server for
X displays.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-misc/tightvnc < 1.2.9-r4 >= 1.2.9-r4
2 x11-libs/libXfont < 1.2.7-r1 >= 1.2.7-r1
-------------------------------------------------------------------
2 affected packages on all of their supported architectures.
-------------------------------------------------------------------
Description
===========
The libXfont code is prone to several integer overflows, in functions
ProcXCMiscGetXIDList(), bdfReadCharacters() and FontFileInitTable().
TightVNC contains a local copy of this code and is also affected.
Impact
======
A local attacker could use a specially crafted BDF Font to gain root
privileges on the vulnerable host.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All libXfont users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=x11-libs/libXfont-1.2.7-r1"
All TightVNC users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/tightvnc-1.2.9-r4"
References
==========
[ 1 ] CVE-2007-1003
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1003
[ 2 ] CVE-2007-1351
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1351
[ 3 ] CVE-2007-1352
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1352
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200705-10.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 2007 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
--wRRV7LY7NUeQGEoC
Content-Type: application/pgp-signature
Content-Disposition: inline
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.6 (GNU/Linux)
iQEVAwUBRkCcRDvRww8BFPxFAQI3NAf/XkC4tc0IxvARHzlTrkJ0+KryIwPdT1FZ
Gvoh3NUOfsRDT9KdsP063kXy186um6RbVZ/xxGeKkj08tF8QSOsz/Yg1g1K1RG9Q
Sqt7pXDUsDciOoDEHT728Ke1vWUv1zY2nyupYw3mjrcIqWR5mDlP6gQAedFuRtfw
2/MmypSVnzZR92IlG4f+RwfOTDjtigaxdncsypI0U+neCCLk7GteAzmm4FuHb1An
1lS/9wcH0aewvq8ns4RDBVClJG+87Y7NzZuj8Co/YMPSRKdf9AkME8IwXmp2i1Ia
IaaAiwM3Pvbn4MuFjkAy394E4kw0nYLOgFmGEhmDQRqy5ncmmOzWwg==
=/hq4
-----END PGP SIGNATURE-----
--wRRV7LY7NUeQGEoC--
