Ubuntu 3297-1: jbig2dec vulnerabilities

    Date24 May 2017
    CategoryUbuntu
    39
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in jbig2dec.
    ==========================================================================
    Ubuntu Security Notice USN-3297-1
    May 24, 2017
    
    jbig2dec vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 17.04
    - Ubuntu 16.10
    - Ubuntu 16.04 LTS
    - Ubuntu 14.04 LTS
    
    Summary:
    
    Several security issues were fixed in jbig2dec.
    
    Software Description:
    - jbig2dec: JBIG2 decoder library
    
    Details:
    
    Bingchang Liu discovered that jbig2dec incorrectly handled memory when
    decoding malformed image files. If a user or automated system were tricked
    into processing a specially crafted JBIG2 image file, a remote attacker
    could cause jbig2dec to crash, resulting in a denial of service, or
    possibly execute arbitrary code. This issue only applied to Ubuntu 14.04
    LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-9601)
    
    It was discovered that jbig2dec incorrectly handled memory when decoding
    malformed image files. If a user or automated system were tricked into
    processing a specially crafted JBIG2 image file, a remote attacker could
    cause jbig2dec to crash, resulting in a denial of service, or possibly
    disclose sensitive information. (CVE-2017-7885)
    
    Jiaqi Peng discovered that jbig2dec incorrectly handled memory when
    decoding malformed image files. If a user or automated system were tricked
    into processing a specially crafted JBIG2 image file, a remote attacker
    could cause jbig2dec to crash, resulting in a denial of service, or
    possibly execute arbitrary code. (CVE-2017-7975)
    
    Dai Ge discovered that jbig2dec incorrectly handled memory when decoding
    malformed image files. If a user or automated system were tricked into
    processing a specially crafted JBIG2 image file, a remote attacker could
    cause jbig2dec to crash, resulting in a denial of service, or possibly
    disclose sensitive information. (CVE-2017-7976)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 17.04:
      jbig2dec                        0.13-4ubuntu0.1
      libjbig2dec0                    0.13-4ubuntu0.1
    
    Ubuntu 16.10:
      jbig2dec                        0.13-2ubuntu0.1
      libjbig2dec0                    0.13-2ubuntu0.1
    
    Ubuntu 16.04 LTS:
      jbig2dec                        0.12+20150918-1ubuntu0.1
      libjbig2dec0                    0.12+20150918-1ubuntu0.1
    
    Ubuntu 14.04 LTS:
      jbig2dec                        0.11+20120125-1ubuntu1.1
      libjbig2dec0                    0.11+20120125-1ubuntu1.1
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://www.ubuntu.com/usn/usn-3297-1
      CVE-2016-9601, CVE-2017-7885, CVE-2017-7975, CVE-2017-7976
    
    Package Information:
      https://launchpad.net/ubuntu/+source/jbig2dec/0.13-4ubuntu0.1
      https://launchpad.net/ubuntu/+source/jbig2dec/0.13-2ubuntu0.1
      https://launchpad.net/ubuntu/+source/jbig2dec/0.12+20150918-1ubuntu0.1
      https://launchpad.net/ubuntu/+source/jbig2dec/0.11+20120125-1ubuntu1.1
    
    
    
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