It was reported that libpng suffers from an issue where certain highly compressed ancillary chunks (zTxt, iTxt, iCCP) could cause libpng to stall or crash by consuming huge amounts of memory. This vulnerability is reported to affect all versions of libpng prior to 1.4.1, as well as versions of Firefox from 3.0. It is also possible that other gecko-based browsers are vulnerable as well, as well as all versions of pngcrush, ImageMagick, and GraphicsMagick. CERT is tracking this issue as VU#576029.
This issue is public now and assigned the name CVE-2010-0205: https://www.kb.cert.org/vuls/id/576029
Created attachment 397627 [details] patch for fixing extremely slow decompression of compressed chunks
libpng10-1.0.53-1.fc13 has been submitted as an update for Fedora 13. http://admin.fedoraproject.org/updates/F13/FEDORA-2010-2988
libpng10-1.0.53-1.fc12 has been submitted as an update for Fedora 12. http://admin.fedoraproject.org/updates/F12/FEDORA-2010-3375
libpng10-1.0.53-1.fc11 has been submitted as an update for Fedora 11. http://admin.fedoraproject.org/updates/F11/FEDORA-2010-3414
Additional references: http://libpng.sourceforge.net/ADVISORY-1.4.1.html http://libpng.sourceforge.net/decompression_bombs.html
The Mozilla applications (firefox, thunderbird, seamonkey, etc.) are using embedded libpng which makes them vulnerable to this issue, despite whether or not the system libpng is updated. Is there a particular reason why the Mozilla applications are using an embedded version of libpng? And can we make them use the system libpng at all? If not, we'll have to try the patch that Tom attached in the firefox and friends builds to make sure that the email/browser clients are patched as there is greater risk using those applications than other applications using libpng.
libpng10-1.0.53-1.fc13 has been pushed to the Fedora 13 stable repository. If problems still persist, please make note of it in this bug report.
libpng-1.2.43-1.fc12 has been submitted as an update for Fedora 12. http://admin.fedoraproject.org/updates/libpng-1.2.43-1.fc12
libpng-1.2.43-1.fc13 has been submitted as an update for Fedora 13. http://admin.fedoraproject.org/updates/libpng-1.2.43-1.fc13
libpng-1.2.43-1.fc11 has been submitted as an update for Fedora 11. http://admin.fedoraproject.org/updates/libpng-1.2.43-1.fc11
libpng10-1.0.53-1.fc12 has been pushed to the Fedora 12 stable repository. If problems still persist, please make note of it in this bug report.
libpng10-1.0.53-1.fc11 has been pushed to the Fedora 11 stable repository. If problems still persist, please make note of it in this bug report.
libpng-1.2.43-1.fc13 has been pushed to the Fedora 13 stable repository. If problems still persist, please make note of it in this bug report.
libpng-1.2.43-1.fc11 has been pushed to the Fedora 11 stable repository. If problems still persist, please make note of it in this bug report.
libpng-1.2.43-1.fc12 has been pushed to the Fedora 12 stable repository. If problems still persist, please make note of it in this bug report.
This issue has been addressed in following products: Red Hat Enterprise Linux 3 Red Hat Enterprise Linux 4 Red Hat Enterprise Linux 5 Via RHSA-2010:0534 https://rhn.redhat.com/errata/RHSA-2010-0534.html
Statement: (none)