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             AUSCERT External Security Bulletin Redistribution

                               ESB-2011.0055
                          Security update for tor
                              19 January 2011

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           tor
Publisher:         Debian
Operating System:  Debian GNU/Linux 5
                   Windows
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2011-0427  

Original Bulletin: 
   http://www.debian.org/security/2010/dsa-2148

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Debian. It is recommended that administrators 
         running tor check for an updated version of the software for their 
         operating system.

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Debian Security Advisory DSA-2148-1                   security@debian.org
http://www.debian.org/security/                        Moritz Muehlenhoff
January 17, 2011                       http://www.debian.org/security/faq
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Package        : tor
Vulnerability  : several
Problem type   : remote
Debian-specific: no
CVE ID         : CVE-2011-0427

The developers of Tor, an anonymizing overlay network for TCP, found 
three security issues during a security audit. A heap overflow allowed
the execution of arbitrary code (CVE-2011-0427), a denial of service
vulnerability was found in the zlib compression handling and some key
memory was incorrectly zeroed out before being freed. The latter two 
issues do not yet have CVE identifiers assigned. The Debian Security
Tracker will be updated once they're available:
http://security-tracker.debian.org/tracker/source-package/tor

For the stable distribution (lenny), this problem has been fixed in
version 0.2.1.29-1~lenny+1.

For the testing distribution (squeeze) and the unstable distribution (sid),
this problem has been fixed in version 0.2.1.29-1.

For the experimental distribution, this problem has been fixed in
version 0.2.2.21-alpha-1.

We recommend that you upgrade your tor packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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