Linux Security
Linux Security
Linux Security

Fedora 31: pngcheck 2020-27b168926a

Date 21 Nov 2020
553
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.
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Fedora Update Notification
FEDORA-2020-27b168926a
2020-11-22 01:27:05.453245
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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.

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Update Information:

Fix buffer overflow (RHBZ #1897485) A global buffer overflow was discovered in
the check_chunk_name function via a crafted png file.
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ChangeLog:

* Fri Nov 13 2020 Benjamin A. Beasley  - 2.3.0-4
- Fix buffer overflow (RHBZ #1897485)
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References:

  [ 1 ] Bug #1897485 - Private bug
        https://bugzilla.redhat.com/show_bug.cgi?id=1897485
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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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