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Message-ID: <20120913192310.GA6044@pisco.westfalen.local>
Date: Thu, 13 Sep 2012 21:23:11 +0200
From: Moritz Muehlenhoff <jmm@...ian.org>
To: debian-security-announce@...ts.debian.org
Subject: [SECURITY] [DSA 2548-1] tor security update

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- -------------------------------------------------------------------------
Debian Security Advisory DSA-2548-1                   security@...ian.org
http://www.debian.org/security/                        Moritz Muehlenhoff
September 13, 2012                     http://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package        : tor
Vulnerability  : several
Problem type   : remote
Debian-specific: no
CVE ID         : CVE-2012-3518 CVE-2012-3519 CVE-2012-4419

Severel vulnerabilities have been discovered in Tor, an online privacy 
tool.

CVE-2012-3518

  Avoid an uninitialised memory read when reading a vote or consensus
  document that has an unrecognized flavour name. This could lead to
  a remote, resulting in denial of service.

CVE-2012-3519

  Try to leak less information about what relays a client is choosing to
  a side-channel attacker.

CVE-2012-4419

  By providing specially crafted date strings to a victim tor instance, 
  an attacker can cause it to run into an assertion and shut down

Additionally the update to stable includes the following fixes:
- - When waiting for a client to renegotiate, don't allow it to add any
  bytes to the input buffer. This fixes a potential DoS issue
  [tor-5934, tor-6007].

For the stable distribution (squeeze), these problems have been fixed in
version 0.2.2.39-1.

For the unstable distribution, these problems have been fixed in version
0.2.3.22-rc-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@...ts.debian.org
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