Linux Security
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    Linux Security

    Fedora 31: pngcheck 2020-27b168926a

    Date 21 Nov 2020
    358
    Posted By LinuxSecurity Advisories
    Fix buffer overflow (RHBZ #1897485) A global buffer overflow was discovered in the check_chunk_name function via a crafted png file.
    --------------------------------------------------------------------------------
    Fedora Update Notification
    FEDORA-2020-27b168926a
    2020-11-22 01:27:05.453245
    --------------------------------------------------------------------------------
    
    Name        : pngcheck
    Product     : Fedora 31
    Version     : 2.3.0
    Release     : 4.fc31
    URL         : https://www.libpng.org/pub/png/apps/pngcheck.html
    Summary     : Verifies the integrity of PNG, JNG and MNG files
    Description :
    pngcheck verifies the integrity of PNG, JNG and MNG files (by checking the
    internal 32-bit CRCs [checksums] and decompressing the image data); it can
    optionally dump almost all of the chunk-level information in the image in
    human-readable form. For example, it can be used to print the basic statistics
    about an image (dimensions, bit depth, etc.); to list the color and
    transparency info in its palette (assuming it has one); or to extract the
    embedded text annotations. This is a command-line program with batch
    capabilities.
    
    The current release supports all PNG, MNG and JNG chunks, including the newly
    approved sTER stereo-layout chunk. It correctly reports errors in all but two
    of the images in Chris Nokleberg's brokensuite-20061204.
    
    --------------------------------------------------------------------------------
    Update Information:
    
    Fix buffer overflow (RHBZ #1897485) A global buffer overflow was discovered in
    the check_chunk_name function via a crafted png file.
    --------------------------------------------------------------------------------
    ChangeLog:
    
    * Fri Nov 13 2020 Benjamin A. Beasley  - 2.3.0-4
    - Fix buffer overflow (RHBZ #1897485)
    --------------------------------------------------------------------------------
    References:
    
      [ 1 ] Bug #1897485 - Private bug
            https://bugzilla.redhat.com/show_bug.cgi?id=1897485
    --------------------------------------------------------------------------------
    
    This update can be installed with the "dnf" update program. Use
    su -c 'dnf upgrade --advisory FEDORA-2020-27b168926a' at the command
    line. For more information, refer to the dnf documentation available at
    https://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label
    
    All packages are signed with the Fedora Project GPG key. More details on the
    GPG keys used by the Fedora Project can be found at
    https://fedoraproject.org/keys
    --------------------------------------------------------------------------------
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