[SECURITY] Fedora 27 Update: optipng-0.7.6-5.fc27

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Fedora Update Notification
FEDORA-2017-e56a2ddd09
2017-12-19 18:22:41.462648
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Name        : optipng
Product     : Fedora 27
Version     : 0.7.6
Release     : 5.fc27
URL         : http://optipng.sourceforge.net/
Summary     : PNG optimizer and converter
Description :
OptiPNG is a PNG optimizer that recompresses image files to a smaller size,
without losing any information. This program also converts external formats
(BMP, GIF, PNM and TIFF) to optimized PNG, and performs PNG integrity checks
and corrections.

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Update Information:

Security fix for CVE-2017-1000229 and CVE-2017-16938
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References:

  [ 1 ] Bug #1520234 - CVE-2017-1000229 optipng: integer overflow in
tiffread.c:minitiff_read_info() allows for arbitrary code execution
        https://bugzilla.redhat.com/show_bug.cgi?id=1520234
  [ 2 ] Bug #1520227 - CVE-2017-16938 optipng: global buffer overflow in
gifread.c:LZWReadByte when parsing malicious GIF
        https://bugzilla.redhat.com/show_bug.cgi?id=1520227
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade optipng' at the command line.
For more information, refer to the dnf documentation available at
http://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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