Ubuntu 4246-1: zlib vulnerabilities

    Date22 Jan 2020
    129
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in zlib
    ==========================================================================
    Ubuntu Security Notice USN-4246-1
    January 22, 2020
    
    zlib vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 16.04 LTS
    
    Summary:
    
    Several security issues were fixed in zlib
    
    Software Description:
    - zlib: Lossless data-compression library
    
    Details:
    
    It was discovered that zlib incorrectly handled pointer arithmetic. An
    attacker
    could use this issue to cause zlib to crash, resulting in a denial of
    service, or possibly execute arbitrary code. (CVE-2016-9840, CVE-2016-9841)
    
    It was discovered that zlib incorrectly handled vectors involving left
    shifts of
    negative integers. An attacker could use this issue to cause zlib to
    crash, resulting in a denial of service, or possibly execute arbitrary code.
    (CVE-2016-9842)
    
    It was discovered that zlib incorrectly handled vectors involving
    big-endian CRC
    calculation. An attacker could use this issue to cause zlib to crash,
    resulting in a denial of service, or possibly execute arbitrary code.
    (CVE-2016-9843)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 16.04 LTS:
    lib32z1 1:1.2.8.dfsg-2ubuntu4.3
    lib64z1 1:1.2.8.dfsg-2ubuntu4.3
    libn32z1 1:1.2.8.dfsg-2ubuntu4.3
    libx32z1 1:1.2.8.dfsg-2ubuntu4.3
    zlib1g 1:1.2.8.dfsg-2ubuntu4.3
    
    In general, a standard system update will make all the necessary changes.
    
    References:
    https://usn.ubuntu.com/4246-1
    CVE-2016-9840, CVE-2016-9841, CVE-2016-9842, CVE-2016-9843
    
    Package Information:
    https://launchpad.net/ubuntu/+source/zlib/1:1.2.8.dfsg-2ubuntu4.3
    
    
    
    
    You are not authorised to post comments.

    Comments powered by CComment

    LinuxSecurity Poll

    What do you think of the LinuxSecurity Privacy news articles?

    No answer selected. Please try again.
    Please select either existing option or enter your own, however not both.
    Please select minimum 0 answer(s) and maximum 3 answer(s).
    /main-polls/25-what-do-you-think-of-the-linuxsecurity-privacy-news-articles?task=poll.vote&format=json
    25
    radio
    [{"id":"90","title":"Love them!","votes":"35","type":"x","order":"1","pct":92.11,"resources":[]},{"id":"91","title":"I'm indifferent","votes":"2","type":"x","order":"2","pct":5.26,"resources":[]},{"id":"92","title":"Not interested in this topic","votes":"1","type":"x","order":"3","pct":2.63,"resources":[]}]["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"]["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"]350
    bottom200

    We use cookies to provide and improve our services. By using our site, you consent to our Cookie Policy.