Debian: DSA-2136-1: New tor packages fix potential code execution

    Date21 Dec 2010
    CategoryDebian
    38
    Posted ByLinuxSecurity Advisories
    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
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    Debian Security Advisory DSA-2136-1                  This email address is being protected from spambots. You need JavaScript enabled to view it.
    http://www.debian.org/security/                         Raphael Geissert
    December 21, 2010                     http://www.debian.org/security/faq
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    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: This email address is being protected from spambots. You need JavaScript enabled to view it.
    Package info: `apt-cache show ' and http://packages.debian.org/
    
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