Ubuntu 2058-1: curl vulnerability

    Date18 Dec 2013
    CategoryUbuntu
    38
    Posted ByLinuxSecurity Advisories
    Fraudulent security certificates could allow sensitive information to be exposed when accessing the Internet.
    ==========================================================================
    Ubuntu Security Notice USN-2058-1
    December 18, 2013
    
    curl vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 13.10
    - Ubuntu 13.04
    - Ubuntu 12.10
    - Ubuntu 12.04 LTS
    
    Summary:
    
    Fraudulent security certificates could allow sensitive information to be
    exposed when accessing the Internet.
    
    Software Description:
    - curl: HTTP, HTTPS, and FTP client and client libraries
    
    Details:
    
    Marc Deslauriers discovered that libcurl incorrectly verified CN and SAN
    name fields when digital signature verification was disabled in the GnuTLS
    backend. When libcurl is being used in this uncommon way by specific
    applications, an attacker could exploit this to perform a man in the middle
    attack to view sensitive information or alter encrypted communications.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 13.10:
      libcurl3-gnutls                 7.32.0-1ubuntu1.2
    
    Ubuntu 13.04:
      libcurl3-gnutls                 7.29.0-1ubuntu3.4
    
    Ubuntu 12.10:
      libcurl3-gnutls                 7.27.0-1ubuntu1.7
    
    Ubuntu 12.04 LTS:
      libcurl3-gnutls                 7.22.0-3ubuntu4.6
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-2058-1
      CVE-2013-6422
    
    Package Information:
      https://launchpad.net/ubuntu/+source/curl/7.32.0-1ubuntu1.2
      https://launchpad.net/ubuntu/+source/curl/7.29.0-1ubuntu3.4
      https://launchpad.net/ubuntu/+source/curl/7.27.0-1ubuntu1.7
      https://launchpad.net/ubuntu/+source/curl/7.22.0-3ubuntu4.6
    
    
    
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