User Activity
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Modified
ticket #772
on
GraphicsMagick
pict file fails with gm 1.3.47
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Posted
a comment
on
ticket #772
on
GraphicsMagick
It seems that the algorithm I used in changeset 17840:6532b3985f0b to attempt to read files written by older ImageMagick/GraphicsMagick with PixMap rowBytes=[201..250] is faulty. With 3840 bytes per line, the first byte read will be zero because the binary value is "0b1111 00000000". This triggers wrong behavior. I can't think of a way to cause old faulty files to be read. Existing broken code can be manually fixed by editing coders/pict.c, searching for "Brutal implementation" and then changing...
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Modified
ticket #772
on
GraphicsMagick
pict file fails with gm 1.3.47
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Posted
a comment
on
ticket #772
on
GraphicsMagick
I am able to reproduce this. This error is produced: 08:16:40 0:0.017347 0.110u 894297 pict.c/DecodeImage/1022/Coder: Scanline length 1 < 2! 08:16:40 0:0.017387 0.110u 894297 pict.c/DecodeImage/1024/CorruptImage: Unable to uncompress image (sample-pict-files-sample_1280x853.pict) It seems that a security check which was added is causing the decode to fail.
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Created
a blog post
on
GraphicsMagick
GraphicsMagick 1.3.47 is now available
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Modified
ticket #771
on
GraphicsMagick
Division by zero in WriteDPXImage due to incorrect AND/OR in sampling factor validation
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Posted
a comment
on
ticket #771
on
GraphicsMagick
This issue is addressed by Mercurial changeset 18059:84bfb148a621
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Modified
ticket #770
on
GraphicsMagick
XCF coder: two unsigned integer overflows from missing input validation
Personal Data
- Username:
- bfriesen
- Joined:
- 2000-12-30 16:10:24
- Location:
- Dallas / United States / CDT
- Gender:
- Male
Projects
This is a list of open source software projects that Bob Friesenhahn is associated with:
- GraphicsMagick Swiss army knife of image processing Last Updated:
- JMagick Last Updated:
- TclMagick Last Updated:
-
WebMagick Web Gallery Generator Last Updated:
- libjpeg Last Updated:
- pkgbuild Last Updated:
- wvWare Last Updated:
