Sicherheit: Pufferüberlauf in pngcheck
Aktuelle Meldungen Distributionen
Name: Pufferüberlauf in pngcheck
ID: FEDORA-2021-e24167b0e8
Distribution: Fedora
Plattformen: Fedora 32
Datum: Di, 9. Februar 2021, 07:44
Referenzen: https://bugzilla.redhat.com/show_bug.cgi?id=1908559
Applikationen: pngcheck


Fedora Update Notification
2021-02-09 01:07:37.998866

Name : pngcheck
Product : Fedora 32
Version : 2.4.0
Release : 7.fc32
URL : http://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

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:

Buffer overflow fixes: 1. Fix buffer overflow on large MNG LOOP chunk
(RHBZ#1908559). 2. Fix a buffer overrun for certain invalid MNG PPLT chunk
contents (RHBZ#1907428).

* Thu Jan 7 2021 Benjamin A. Beasley <code@musicinmybrain.net> - 2.4.0-7
- Fix buffer overflow on large MNG LOOP chunk (RHBZ#1908559)
* Thu Jan 7 2021 Benjamin A. Beasley <code@musicinmybrain.net> - 2.4.0-6
- Fix a buffer overrun for certain invalid MNG PPLT chunk contents

[ 1 ] Bug #1907428 - Private bug
[ 2 ] Bug #1908559 - Private bug

This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2021-e24167b0e8' at the command
line. For more information, refer to the dnf documentation available at

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
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