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CPU exhaustion in ReadRLEImage #518
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Can you post an example exploit. We would expect that an exploit image file would return an EOF before a possible DOS. |
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Thanks for the problem report. We can reproduce it and will have a patch to fix it in GIT master branch @ https://github.com/ImageMagick/ImageMagick later today. The patch will be available in the beta releases of ImageMagick @ http://www.imagemagick.org/download/beta/ by sometime tomorrow. |
Version: ImageMagick 7.0.6-1 Q16 x86_64
$magick identify $FILE
image->rows is 16bit, image->columns is also 16bit. But number_pixels is 64bit, so it can be very large.
Because the count of loop can be controlled, so it can cause ImageMagick to spend a lot of time to process a crafted imagefile, even if the imagefile is very small.
Credit: ADLab of Venustech
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