From: Sune Kloppenborg Jeppesen <jaervosz@gentoo.org.>
To: gentoo-announce@gentoo.org
Subject: [ GLSA 200606-04 ] Tor: Several vulnerabilities
Date: Wed, 7 Jun 2006 19:50:07 +0200
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Organization: Gentoo Linux Security Team
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Gentoo Linux Security Advisory GLSA 200606-04
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http://security.gentoo.org/
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Severity: Normal
Title: Tor: Several vulnerabilities
Date: June 07, 2006
Bugs: #134329
ID: 200606-04
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Synopsis
========
Tor is vulnerable to a possible buffer overflow, a Denial of Service,
information disclosure and information leak.
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 < 0.1.1.20 >= 0.1.1.20
Description
===========
Some integer overflows exist when adding elements to the smartlists.
Non-printable characters received from the network are not properly
sanitised before being logged. There are additional unspecified bugs in
the directory server and in the internal circuits.
Impact
======
The possible buffer overflow may allow a remote attacker to execute
arbitrary code on the server by sending large inputs. The other
vulnerabilities can lead to a Denial of Service, a lack of logged
information, or some information disclosure.
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-0.1.1.20"
References
==========
[ 1 ] CVE-2006-0414
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0414
[ 2 ] Tor ChangeLog
http://tor.eff.org/cvs/tor/ChangeLog
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200606-04.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 2006 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
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