Debian: DSA-3203-1: tor security update

    Date22 Mar 2015
    CategoryDebian
    34
    Posted ByLinuxSecurity Advisories
    Several denial-of-service issues have been discovered in Tor, a connection-based low-latency anonymous communication system. o Jowr discovered that very high DNS query load on a relay could
    
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    Debian Security Advisory DSA-3203-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    http://www.debian.org/security/                        Sebastien Delafond
    March 22, 2015                         http://www.debian.org/security/faq
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    Package        : tor
    
    Several denial-of-service issues have been discovered in Tor, a
    connection-based low-latency anonymous communication system.
    
      o Jowr discovered that very high DNS query load on a relay could
        trigger an assertion error.
    
      o A relay could crash with an assertion error if a buffer of exactly
        the wrong layout was passed to buf_pullup() at exactly the wrong
        time.
    
    For the stable distribution (wheezy), these problems have been fixed
    in version 0.2.4.26-1.
    
    For the testing distribution (jessie) and unstable distribution (sid),
    these problems have been fixed in version 0.2.5.11-1.
    
    Furthermore, this update disables support for SSLv3 in Tor. All
    versions of OpenSSL in use with Tor today support TLS 1.0 or later.
    
    Additionally, this release updates the geoIP database used by Tor as
    well as the list of directory authority servers, which Tor clients use
    to bootstrap and who sign the Tor directory consensus document.
    
    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: https://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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