Ubuntu 1273-1: Pidgin vulnerabilities

    Date21 Nov 2011
    CategoryUbuntu
    85
    Posted ByLinuxSecurity Advisories
    Pidgin could be made to crash if it received specially crafted network traffic.
    ==========================================================================
    Ubuntu Security Notice USN-1273-1
    November 21, 2011
    
    pidgin vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 11.04
    - Ubuntu 10.10
    - Ubuntu 10.04 LTS
    
    Summary:
    
    Pidgin could be made to crash if it received specially crafted network
    traffic.
    
    Software Description:
    - pidgin: multi-protocol instant messaging client
    
    Details:
    
    Marius Wachtler discovered that Pidgin incorrectly handled malformed YMSG
    messages in the Yahoo! protocol handler. A remote attacker could send a
    specially crafted message and cause Pidgin to crash, leading to a denial
    of service. This issue only affected Ubuntu 10.04 LTS and 10.10.
    (CVE-2011-1091)
    
    Marius Wachtler discovered that Pidgin incorrectly handled HTTP 100
    responses in the MSN protocol handler. A remote attacker could send a
    specially crafted message and cause Pidgin to crash, leading to a denial
    of service. (CVE-2011-3184)
    
    Diego Bauche Madero discovered that Pidgin incorrectly handled UTF-8
    sequences in the SILC protocol handler. A remote attacker could send a
    specially crafted message and cause Pidgin to crash, leading to a denial
    of service.  (CVE-2011-3594)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 11.04:
      pidgin                          1:2.7.11-1ubuntu2.1
    
    Ubuntu 10.10:
      pidgin                          1:2.7.3-1ubuntu3.3
    
    Ubuntu 10.04 LTS:
      pidgin                          1:2.6.6-1ubuntu4.4
    
    After a standard system update you need to restart Pidgin to make
    all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-1273-1
      CVE-2011-1091, CVE-2011-3184, CVE-2011-3594
    
    Package Information:
      https://launchpad.net/ubuntu/+source/pidgin/1:2.7.11-1ubuntu2.1
      https://launchpad.net/ubuntu/+source/pidgin/1:2.7.3-1ubuntu3.3
      https://launchpad.net/ubuntu/+source/pidgin/1:2.6.6-1ubuntu4.4
    
    
    
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