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Date: Mon, 17 Jan 2011 19:42:42 +0100
From: Moritz Muehlenhoff <>
Subject: [SECURITY] [DSA 2148-1] Security update for tor

Hash: SHA1

- -------------------------------------------------------------------------
Debian Security Advisory DSA-2148-1                                 Moritz Muehlenhoff
January 17, 2011             
- -------------------------------------------------------------------------

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:

For the stable distribution (lenny), this problem has been fixed in

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

For the experimental distribution, this problem has been fixed in

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:

Mailing list:
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