Fedora 8 Update: optipng-0.6.2-1.fc8
Summary
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.
The main reason for this update is a buffer overflow that is removed in this
version, that could be triggered by processing specially crafted bitmap images
(*.bmp). Aggregated upstream changelog: ============================== ++
Put back a speed optimization, accidentally removed in version 0.6, allowing
singleton trials (-o1) to be bypassed in certain conditions. !! Fixed an array
overflow in the BMP reader. !! Fixed the loss of private chunks under the -snip
option. + Produced a more concise on-screen output in the non-verbose mode.
(Thanks to Vincent Lefevre for the suggestion.) * Added a programming interface
to the optimization engine, in order to facilitate the development of PNG-optimizing GUI apps and plugins. ! Fixed processing when image reduction yields
an output larger than the original. (Thanks to Michael Krishtopa for the
report.) ! Fixed behavior of -preserve. (Thanks to Bill Koch for the report.)
- Removed displaying of partial progress when abandoning IDATs under the -v
option. The percentages displayed were not very accurate. ++ Implemented
grayscale(alpha)-to-palette reductions. ++ Improved conversion of bKGD info
during RGB-to-palette reductions. (Thanks to Matthew Fearnley for the
contribution.) !! Fixed conversion of bKGD and tRNS during 16-to-8-bit
reductions. (Thanks to Matthew Fearnley for the report.) + Added support for
compressed BMP (incl. PNG-compressed BMP, you bet!) + Improved the speed of
reading raw PNM files. + Recognized PNG digital signatures (dSIG) and disabled
optimization in their presence, to preserve their integrity. + Allowed the user
to enforce the optimization of dSIG'ed files. + Recognized APNG animation files
and disabled reductions to preserve their integrity. + Added the -snip option,
to allow the user to "snip" one image out of a multi-image file, such as
animated GIF, multi-page TIFF, or APNG. (Thanks to [LaughingMan] for the
suggestion.) + Improved recovery of PNG files with incomplete IDAT. ! Fixed
behavior of -out and -dir when the input is already optimized. (Thanks to
Christian Davideck for the report.) * Provided more detailed image information
at the start of processing. * Provided a more detailed summary at the end of
processing, under the presence of the -v option and/or the occurence of
exceptional events.
* Wed Nov 12 2008 Till Maas
- Update to new release to fix buffer overflow
- Red Hat Bugzilla #471206
* Thu Aug 28 2008 Ville Skyttä
- 0.6.1.
* Thu Feb 14 2008 Ville Skyttä
- Apply sf.net patch #1790969 to fix crash with -log.
- Cosmetic specfile changes.
[ 1 ] Bug #471206 - OptiPNG: Buffer overflow in BMP image handling reader
https://bugzilla.redhat.com/show_bug.cgi?id=471206
su -c 'yum update optipng' at the command line.
For more information, refer to "Managing Software with yum",
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
https://fedoraproject.org/security/
Fedora-package-announce mailing list
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FEDORA-2008-9639 2008-11-13 02:41:03.571449 Product : Fedora 8 Version : 0.6.2 Release : 1.fc8 URL : https://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. The main reason for this update is a buffer overflow that is removed in this version, that could be triggered by processing specially crafted bitmap images (*.bmp). Aggregated upstream changelog: ============================== ++ Put back a speed optimization, accidentally removed in version 0.6, allowing singleton trials (-o1) to be bypassed in certain conditions. !! Fixed an array overflow in the BMP reader. !! Fixed the loss of private chunks under the -snip option. + Produced a more concise on-screen output in the non-verbose mode. (Thanks to Vincent Lefevre for the suggestion.) * Added a programming interface to the optimization engine, in order to facilitate the development of PNG-optimizing GUI apps and plugins. ! Fixed processing when image reduction yields an output larger than the original. (Thanks to Michael Krishtopa for the report.) ! Fixed behavior of -preserve. (Thanks to Bill Koch for the report.) - Removed displaying of partial progress when abandoning IDATs under the -v option. The percentages displayed were not very accurate. ++ Implemented grayscale(alpha)-to-palette reductions. ++ Improved conversion of bKGD info during RGB-to-palette reductions. (Thanks to Matthew Fearnley for the contribution.) !! Fixed conversion of bKGD and tRNS during 16-to-8-bit reductions. (Thanks to Matthew Fearnley for the report.) + Added support for compressed BMP (incl. PNG-compressed BMP, you bet!) + Improved the speed of reading raw PNM files. + Recognized PNG digital signatures (dSIG) and disabled optimization in their presence, to preserve their integrity. + Allowed the user to enforce the optimization of dSIG'ed files. + Recognized APNG animation files and disabled reductions to preserve their integrity. + Added the -snip option, to allow the user to "snip" one image out of a multi-image file, such as animated GIF, multi-page TIFF, or APNG. (Thanks to [LaughingMan] for the suggestion.) + Improved recovery of PNG files with incomplete IDAT. ! Fixed behavior of -out and -dir when the input is already optimized. (Thanks to Christian Davideck for the report.) * Provided more detailed image information at the start of processing. * Provided a more detailed summary at the end of processing, under the presence of the -v option and/or the occurence of exceptional events. * Wed Nov 12 2008 Till Maas - 0.6.2-1 - Update to new release to fix buffer overflow - Red Hat Bugzilla #471206 * Thu Aug 28 2008 Ville Skyttä - 0.6.1-1 - 0.6.1. * Thu Feb 14 2008 Ville Skyttä - 0.5.5-4 - Apply sf.net patch #1790969 to fix crash with -log. - Cosmetic specfile changes. [ 1 ] Bug #471206 - OptiPNG: Buffer overflow in BMP image handling reader https://bugzilla.redhat.com/show_bug.cgi?id=471206 su -c 'yum update optipng' at the command line. For more information, refer to "Managing Software with yum", 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 https://fedoraproject.org/security/ Fedora-package-announce mailing list Fedora-package-announce@redhat.com http://www.redhat.com/mailman/listinfo/fedora-package-announce
Change Log
References
Update Instructions
