• [SECURITY] [DSA-2136-1] New tor packages fix potential code execution

    From Raphael Geissert@1:229/2 to All on Wed Dec 22 01:30:01 2010
    From: [email protected]

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    - ------------------------------------------------------------------------ Debian Security Advisory DSA-2136-1 [email protected] http://www.debian.org/security/ Raphael Geissert December 21, 2010 http://www.debian.org/security/faq
    - ------------------------------------------------------------------------

    Package : tor
    Vulnerability : buffer overflow
    Problem type : remote
    Debian-specific: no
    CVE Id : CVE-2010-1676


    Willem Pinckaers discovered that Tor, a tool to enable online anonymity,
    does not correctly handle all data read from the network. By supplying specially crafted packets a remote attacker can cause Tor to overflow its
    heap, crashing the process. Arbitrary code execution has not been
    confirmed but there is a potential risk.

    In the stable distribution (lenny), this update also includes an update of
    the IP address for the Tor directory authority gabelmoo and addresses
    a weakness in the package's postinst maintainer script.


    For the stable distribution (lenny) this problem has been fixed in
    version 0.2.1.26-1~lenny+4.

    For the testing distribution (squeeze) and the unstable distribution (sid), this problem has been fixed in version 0.2.1.26-6.


    We recommend that you upgrade your tor packages.

    Upgrade instructions
    - --------------------

    If you are using the apt-get package manager, use the line for
    sources.list as given below:

    apt-get update
    will update the internal database
    apt-get upgrade
    will install corrected packages

    You may use an automated update by adding the resources from the
    footer to the proper configuration.

    - ---------------------------------------------------------------------------------
    For apt-get: deb http://security.debian.org/ stable/updates main
    For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
    Mailing list: [email protected]
    Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg> -----BEGIN PGP SIGNATURE-----
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