Ubuntu 2214-3: libxml2 regression

    Date17 Jun 2014
    62
    Posted ByLinuxSecurity Advisories
    USN-2214-1 introduced a regression in libxml2.
    ==========================================================================
    Ubuntu Security Notice USN-2214-3
    June 17, 2014
    
    libxml2 regression
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 14.04 LTS
    - Ubuntu 13.10
    - Ubuntu 12.04 LTS
    - Ubuntu 10.04 LTS
    
    Summary:
    
    USN-2214-1 introduced a regression in libxml2.
    
    Software Description:
    - libxml2: GNOME XML library
    
    Details:
    
    USN-2214-1 fixed vulnerabilities in libxml2. The upstream fix introduced a
    number of regressions. This update fixes the problem.
    
    We apologize for the inconvenience.
    
    Original advisory details:
    
     Daniel Berrange discovered that libxml2 would incorrectly perform entity
     substitution even when requested not to. If a user or automated system were
     tricked into opening a specially crafted document, an attacker could
     possibly cause resource consumption, resulting in a denial of service.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 14.04 LTS:
      libxml2                         2.9.1+dfsg1-3ubuntu4.3
    
    Ubuntu 13.10:
      libxml2                         2.9.1+dfsg1-3ubuntu2.3
    
    Ubuntu 12.04 LTS:
      libxml2                         2.7.8.dfsg-5.1ubuntu4.9
    
    Ubuntu 10.04 LTS:
      libxml2                         2.7.6.dfsg-1ubuntu1.13
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://www.ubuntu.com/usn/usn-2214-3
      https://www.ubuntu.com/usn/usn-2214-1
      https://launchpad.net/bugs/1321869
    
    Package Information:
      https://launchpad.net/ubuntu/+source/libxml2/2.9.1+dfsg1-3ubuntu4.3
      https://launchpad.net/ubuntu/+source/libxml2/2.9.1+dfsg1-3ubuntu2.3
      https://launchpad.net/ubuntu/+source/libxml2/2.7.8.dfsg-5.1ubuntu4.9
      https://launchpad.net/ubuntu/+source/libxml2/2.7.6.dfsg-1ubuntu1.13
    
    
    

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