Fedora 33: pngcheck 2020-f3a397cbf8
Fedora 33: pngcheck 2020-f3a397cbf8
Previous fix for buffer overrun printing the contents of the sPLT chunk in certain malformed inputs (RHBZ#1905775) was incomplete; it should be properly fixed now. ---- Security fix for multiple buffer overflows from crafted file input (RHBZ#1902786,1902806,1902810: no CVE yet assigned), and for buffer overrun printing the contents of the sPLT chunk in certain malformed inputs
--------------------------------------------------------------------------------
Fedora Update Notification
FEDORA-2020-f3a397cbf8
2020-12-23 01:18:30.481735
--------------------------------------------------------------------------------
Name : pngcheck
Product : Fedora 33
Version : 2.4.0
Release : 5.fc33
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:
Previous fix for buffer overrun printing the contents of the sPLT chunk in
certain malformed inputs (RHBZ#1905775) was incomplete; it should be properly
fixed now. ---- Security fix for multiple buffer overflows from crafted file
input (RHBZ#1902786,1902806,1902810: no CVE yet assigned), and for buffer
overrun printing the contents of the sPLT chunk in certain malformed inputs
(RHBZ#1905775: no tracking bug or CVE yet assigned); also, new eXIf support and
assorted small bug fixes
--------------------------------------------------------------------------------
ChangeLog:
* Mon Dec 14 2020 Benjamin A. Beasley - 2.4.0-5
- Previous fix for buffer overrun printing the contents of the sPLT chunk in
certain malformed inputs (RHBZ#1905775) was incomplete; it should be properly
fixed now.
* Sun Dec 13 2020 Benjamin A. Beasley - 2.4.0-4
- Bounds-check all accesses into enumerated-value name arrays; a malformed file
could have caused a buffer overrun in several of these cases. (RHBZ#1902810)
- Fix buffer overrun when print_buffer() is passed a nonpositive size, which
can occur in practice for certain malformed inputs. (RHBZ#1902810)
- In some cases, the chunk length from the file data (sz) is used to index into
the read buffer without sufficient bounds-checking, leading to a buffer
overrun. Fix this for PPLT, hIST, sCAL, FRAM, SAVE, nEED, PAST, DISC, DROP,
DBYK, ORDR, and SEEK chunks. (RHBZ#1902810)
- Fix buffer overrun printing the contents of the sPLT chunk in certain
malformed inputs. (RHBZ#1905775)
- Backport fix for off-by-one bug in check_magic() from 3.0.0
- Backport fix for zlib version warnings going to stdout from 3.0.0
- Use name macro when referencing patches.
- Add BR on make in anticipation of
https://fedoraproject.org/wiki/Changes/Remove_make_from_BuildRoot.
- New upstream version 2.4.0
- Added new license file for main package (same MIT-style license)
- Drop format-security patch, now upstreamed
- Use upstreamed man pages; no need to generate with help2man anymore
- Add rpmlintrc rules for -extras subpackage
- Add rpmlintrc file to suppress spurious rpmlint warnings
--------------------------------------------------------------------------------
References:
[ 1 ] Bug #1902806 - pngcheck: Multiple buffer overflows from crafted file input
https://bugzilla.redhat.com/show_bug.cgi?id=1902806
--------------------------------------------------------------------------------
This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2020-f3a397cbf8' 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
--------------------------------------------------------------------------------
_______________________________________________
package-announce mailing list -- This email address is being protected from spambots. You need JavaScript enabled to view it.
To unsubscribe send an email to This email address is being protected from spambots. You need JavaScript enabled to view it.
Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/
List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
List Archives: https://lists.fedoraproject.org/archives/list/This email address is being protected from spambots. You need JavaScript enabled to view it.