[Bug 1537425] Re: SEGV in coders/viff.c:692:35

[Moshe Kaplan]

This bug was found while fuzzing ImageMagick with afl-fuzz

Tested on git commit 87b213f9e2578611654a74ea0c6014367f4dc2fa

Command: magick $infile /dev/null

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Title:
  SEGV in coders/viff.c:692:35

Status in imagemagick package in Ubuntu:
  New

Bug description:
  ASAN:SIGSEGV
  =================================================================
  ==20118==ERROR: AddressSanitizer: SEGV on unknown address 0x03897358 (pc 0x08865e90 sp 0xbfb87650 bp 0xbfb889f8 T0)
      #0 0x8865e8f in ReadVIFFImage /home/user/Desktop/ImageMagick/coders/viff.c:692:35
      #1 0x8a9438a in ReadImage /home/user/Desktop/ImageMagick/MagickCore/constitute.c:494
      #2 0x8a9c1ff in ReadImages /home/user/Desktop/ImageMagick/MagickCore/constitute.c:844
      #3 0x9371649 in CLINoImageOperator /home/user/Desktop/ImageMagick/MagickWand/operation.c:4663
      #4 0x9379b31 in CLIOption /home/user/Desktop/ImageMagick/MagickWand/operation.c:5157
      #5 0x910713d in ProcessCommandOptions /home/user/Desktop/ImageMagick/MagickWand/magick-cli.c:474
      #6 0x910a4b5 in MagickImageCommand /home/user/Desktop/ImageMagick/MagickWand/magick-cli.c:786
      #7 0x910e999 in MagickCommandGenesis /home/user/Desktop/ImageMagick/MagickWand/mogrify.c:172
      #8 0x80de12d in MagickMain /home/user/Desktop/ImageMagick/utilities/magick.c:74
      #9 0x80de12d in main /home/user/Desktop/ImageMagick/utilities/magick.c:85
      #10 0xb751ea82 in __libc_start_main /build/buildd/eglibc-2.19/csu/libc-start.c:287
      #11 0x80ddf54 in _start (/usr/local/bin/magick+0x80ddf54)

  AddressSanitizer can not provide additional info.
  SUMMARY: AddressSanitizer: SEGV /home/user/Desktop/ImageMagick/coders/viff.c:692 ReadVIFFImage
  ==20118==ABORTING

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