Ubuntu 4107-1: GIFLIB vulnerabilities

    Date20 Aug 2019
    CategoryUbuntu
    2784
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in GIFLIB.
    ==========================================================================
    Ubuntu Security Notice USN-4107-1
    August 20, 2019
    
    giflib vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 19.04
    - Ubuntu 18.04 LTS
    - Ubuntu 16.04 LTS
    
    Summary:
    
    Several security issues were fixed in GIFLIB.
    
    Software Description:
    - giflib: library for GIF images (utilities)
    
    Details:
    
    It was discovered that GIFLIB incorrectly handled certain GIF files.
    An attacker could possibly use this issue to cause a denial of service.
    This issue only affected Ubuntu 18.04 LTS. (CVE-2016-3977)
    
    It was discovered that GIFLIB incorrectly handled certain GIF files.
    An attacker could possibly use this issue to cause a denial of service.
    (CVE-2018-11490, CVE-2019-15133)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 19.04:
      giflib-tools                    5.1.4-3ubuntu0.1
      libgif7                         5.1.4-3ubuntu0.1
    
    Ubuntu 18.04 LTS:
      giflib-tools                    5.1.4-2ubuntu0.1
      libgif7                         5.1.4-2ubuntu0.1
    
    Ubuntu 16.04 LTS:
      giflib-tools                    5.1.4-0.3~16.04.1
      libgif7                         5.1.4-0.3~16.04.1
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4107-1
      CVE-2016-3977, CVE-2018-11490, CVE-2019-15133
    
    Package Information:
      https://launchpad.net/ubuntu/+source/giflib/5.1.4-3ubuntu0.1
      https://launchpad.net/ubuntu/+source/giflib/5.1.4-2ubuntu0.1
      https://launchpad.net/ubuntu/+source/giflib/5.1.4-0.3~16.04.1
    
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