Debian: DSA-2548-1: tor security update

    Date13 Sep 2012
    CategoryDebian
    51
    Posted ByLinuxSecurity Advisories
    Severel vulnerabilities have been discovered in Tor, an online privacy tool. CVE-2012-3518
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    Debian Security Advisory DSA-2548-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    http://www.debian.org/security/                        Moritz Muehlenhoff
    September 13, 2012                     http://www.debian.org/security/faq
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    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: This email address is being protected from spambots. You need JavaScript enabled to view it.
    
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