[ GLSA 200701-06 ] w3m: Format string vulnerability
Date: Fri, 12 Jan 2007 22:13:19 +0100
From: Raphael Marichez <falco@gentoo.org.>
To: gentoo-announce@gentoo.org
Subject: [ GLSA 200701-06 ] w3m: Format string vulnerability
Message-ID: <20070112211319.GO23772@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="iRjOs3ViPWHdlw/I"
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
--iRjOs3ViPWHdlw/I
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 200701-06
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal
Title: w3m: Format string vulnerability
Date: January 12, 2007
Bugs: #159145
ID: 200701-06
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Synopsis
========
w3m does not correctly handle format string specifiers in SSL
certificates.
Background
==========
w3m is a multi-platform text-based web browser.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 www-client/w3m < 0.5.1-r4 >= 0.5.1-r4
Description
===========
w3m in -dump or -backend mode does not correctly handle printf() format
string specifiers in the Common Name (CN) field of an X.509 SSL
certificate.
Impact
======
An attacker could entice a user to visit a malicious website that would
load a specially crafted X.509 SSL certificate containing "%n" or other
format string specifiers, possibly resulting in the execution of
arbitrary code with the rights of the user running w3m.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All w3m users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=www-client/w3m-0.5.1-r4"
References
==========
[ 1 ] CVE-2006-6772
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-6772
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200701-06.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 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
--iRjOs3ViPWHdlw/I
Content-Type: application/pgp-signature
Content-Disposition: inline
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.6 (GNU/Linux)
iQEVAwUBRaf57zvRww8BFPxFAQJaKgf+LIvXPItPnKTG4GmrriO/CqjtgnXGt9/f
8/rKl+ZnLHcv27l307t8tsxep4FiFkVI1rvbsVQdu85ygLjzaijFjVt67mhWrYeZ
hxuYNnfGI5vsmmVzojebDDD8j4y4IrgCGEnm5T/QSCIbJhK3B+fiz7W1jsF6E+O2
LA7NraSA24PgMNlCP+sh71yaPT+TDiZsvQv77Nn7wHq/84a4t0a84slduqlLzSvq
WwsnD/qCdHQY45g2s3cjsT5yWtniJCrMZRBku/F5kIPvl50RF5GiEyiAvUYE+B6c
FSikNdQs9W6UTEa8OgFjDVmV7nd3G6KJZpa6CNsVtSEE2jJveSDeEg==
=uGu7
-----END PGP SIGNATURE-----
--iRjOs3ViPWHdlw/I--
