From: Robert Buchholz <rbu@gentoo.org.>
To: [email protected]Subject: [ GLSA 200904-11 ] Tor: Multiple vulnerabilities
Date: Thu, 9 Apr 2009 00:48:56 +0200
User-Agent: KMail/1.9.9
Cc: [email protected], [email protected],
[email protected]
MIME-Version: 1.0
Content-Type: multipart/signed;
boundary="nextPart1513424.f0Iifzg9CB";
protocol="application/pgp-signature";
micalg=pgp-sha1
Content-Transfer-Encoding: 7bit
Message-Id: <200904090048.59571.rbu@gentoo.org.>
X-Virus-Scanned: antivirus-gw at tyumen.ru
--nextPart1513424.f0Iifzg9CB
Content-Type: text/plain;
charset="us-ascii"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 200904-11
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: High
Title: Tor: Multiple vulnerabilities
Date: April 08, 2009
Bugs: #250018, #256078, #258833
ID: 200904-11
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Synopsis
========
Multiple vulnerabilities in Tor might allow for heap corruption, Denial
of Service, escalation of privileges and information disclosure.
Background
==========
Tor is an implementation of second generation Onion Routing, a
connection-oriented anonymizing communication service.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-misc/tor < 0.2.0.34 >= 0.2.0.34
Description
===========
* Theo de Raadt reported that the application does not properly drop
privileges to the primary groups of the user specified via the "User"
configuration option (CVE-2008-5397).
* rovv reported that the "ClientDNSRejectInternalAddresses"
configuration option is not always enforced (CVE-2008-5398).
* Ilja van Sprundel reported a heap-corruption vulnerability that
might be remotely triggerable on some platforms (CVE-2009-0414).
* It has been reported that incomplete IPv4 addresses are treated as
valid, violating the specification (CVE-2009-0939).
* Three unspecified vulnerabilities have also been reported
(CVE-2009-0936, CVE-2009-0937, CVE-2009-0938).
Impact
======
A local attacker could escalate privileges by leveraging unintended
supplementary group memberships of the Tor process. A remote attacker
could exploit these vulnerabilities to cause a heap corruption with
unknown impact and attack vectors, to cause a Denial of Service via CPU
consuption or daemon crash, and to weaken anonymity provided by the
service.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All Tor users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/tor-0.2.0.34"
References
==========
[ 1 ] CVE-2008-5397
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5397
[ 2 ] CVE-2008-5398
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5398
[ 3 ] CVE-2009-0414
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0414
[ 4 ] CVE-2009-0936
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0936
[ 5 ] CVE-2009-0937
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0937
[ 6 ] CVE-2009-0938
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0938
[ 7 ] CVE-2009-0939
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0939
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200904-11.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.
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
--nextPart1513424.f0Iifzg9CB
Content-Type: application/pgp-signature; name=signature.asc
Content-Description: This is a digitally signed message part.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.10 (GNU/Linux)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=pArj
-----END PGP SIGNATURE-----
--nextPart1513424.f0Iifzg9CB--
