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TUCoPS :: Linux :: Gentoo :: b06-2787.htm

Tor: several vulnerabilities



Tor: Several vulnerabilities
Tor: Several vulnerabilities



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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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