[ GLSA 200907-10 ] Syslog-ng: Chroot escape
From: Robert Buchholz <rbu@gentoo.org.>
To: gentoo-announce@gentoo.org
Subject: [ GLSA 200907-10 ] Syslog-ng: Chroot escape
Date: Sun, 12 Jul 2009 19:42:50 +0200
User-Agent: KMail/1.9.10
Cc: bugtraq@securityfocus.com, full-disclosure@lists.grok.org.uk,
security-alerts@linuxsecurity.com
MIME-Version: 1.0
Content-Type: multipart/signed;
boundary="nextPart1287387.M7kbu77APT";
protocol="application/pgp-signature";
micalg=pgp-sha1
Content-Transfer-Encoding: 7bit
Message-Id: <200907121942.52941.rbu@gentoo.org.>
X-Virus-Scanned: antivirus-gw at tyumen.ru
--nextPart1287387.M7kbu77APT
Content-Type: text/plain;
charset="us-ascii"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 200907-10
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Low
Title: Syslog-ng: Chroot escape
Date: July 12, 2009
Bugs: #247278
ID: 200907-10
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Synopsis
========
Syslog-ng does not properly initialize its chroot jail allowing for an
escape if a separate vulnerability in Syslog-ng is exploited.
Background
==========
Syslog-ng is a flexible and scalable system logger.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-admin/syslog-ng < 2.1.3 *>= 2.0.10
>= 2.1.3
Description
===========
Florian Grandel reported that Syslog-ng does not call chdir() before
chroot() which leads to an inherited file descriptor to the current
working directory.
Impact
======
A local attacker might exploit a separate vulnerability in Syslog-ng
and use this vulnerability to escape the chroot jail.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All Syslog-ng 2.0 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-admin/syslog-ng-2.0.10"
All Syslog-ng 2.1 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-admin/syslog-ng-2.1.3"
References
==========
[ 1 ] CVE-2008-5110
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5110
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200907-10.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 2009 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
--nextPart1287387.M7kbu77APT
Content-Type: application/pgp-signature; name=signature.asc
Content-Description: This is a digitally signed message part.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.11 (GNU/Linux)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=8TqN
-----END PGP SIGNATURE-----
--nextPart1287387.M7kbu77APT--
