[Bug 1542109] Re: out-of-bounds read in coders/pcx.c:536

[Bug Watch Updater]

** Changed in: imagemagick
       Status: Unknown => Fix Released

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to imagemagick in Ubuntu.
https://bugs.launchpad.net/bugs/1542109

Title:
  out-of-bounds read in coders/pcx.c:536

Status in ImageMagick:
  Fix Released
Status in imagemagick package in Ubuntu:
  Fix Released

Bug description:
  This bug was found while fuzzing ImageMagick with afl-fuzz

  Tested on ImageMagick git commit %s

  Command: magick id:000169,sig:06,src:000734+004696,op:splice,rep:128
  /dev/null

  =================================================================
  ==32731==ERROR: AddressSanitizer: heap-buffer-overflow on address 0xb3503080 at pc 0x8652c1c bp 0xbfc261a8 sp 0xbfc261a0
  READ of size 1 at 0xb3503080 thread T0
      #0 0x8652c1b in ReadPCXImage /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/coders/pcx.c:536
      #1 0x8a8ad6a in ReadImage /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickCore/constitute.c:494
      #2 0x8a92bdf in ReadImages /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickCore/constitute.c:844
      #3 0x9375c09 in CLINoImageOperator /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickWand/operation.c:4685
      #4 0x937e0f1 in CLIOption /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickWand/operation.c:5179
      #5 0x910ae9d in ProcessCommandOptions /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickWand/magick-cli.c:474
      #6 0x910e215 in MagickImageCommand /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickWand/magick-cli.c:786
      #7 0x91126f9 in MagickCommandGenesis /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickWand/mogrify.c:172
      #8 0x80de16d in MagickMain /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/utilities/magick.c:74
      #9 0x80de16d in main /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/utilities/magick.c:85
      #10 0xb7477a82 in __libc_start_main /build/buildd/eglibc-2.19/csu/libc-start.c:287
      #11 0x80ddf94 in _start (/usr/local/bin/magick+0x80ddf94)

  0xb3503080 is located 0 bytes to the right of 2048-byte region [0xb3502880,0xb3503080)
  allocated by thread T0 here:
      #0 0x80c7061 in __interceptor_posix_memalign (/usr/local/bin/magick+0x80c7061)
      #1 0x8189123 in AcquireAlignedMemory /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickCore/memory.c:273
      #2 0x8189123 in AcquireVirtualMemory /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickCore/memory.c:597
      #3 0x864a867 in ReadPCXImage /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/coders/pcx.c:394
      #4 0x8a8ad6a in ReadImage /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickCore/constitute.c:494
      #5 0x8a92bdf in ReadImages /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickCore/constitute.c:844
      #6 0x9375c09 in CLINoImageOperator /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickWand/operation.c:4685
      #7 0x937e0f1 in CLIOption /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickWand/operation.c:5179
      #8 0x910ae9d in ProcessCommandOptions /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickWand/magick-cli.c:474

  SUMMARY: AddressSanitizer: heap-buffer-overflow /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/coders/pcx.c:536 ReadPCXImage
  Shadow bytes around the buggy address:
    0x366a05c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    0x366a05d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    0x366a05e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    0x366a05f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    0x366a0600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  =>0x366a0610:[fa]fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
    0x366a0620: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
    0x366a0630: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
    0x366a0640: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
    0x366a0650: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
    0x366a0660: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  Shadow byte legend (one shadow byte represents 8 application bytes):
    Addressable:           00
    Partially addressable: 01 02 03 04 05 06 07 
    Heap left redzone:     fa
    Heap right redzone:    fb
    Freed heap region:     fd
    Stack left redzone:    f1
    Stack mid redzone:     f2
    Stack right redzone:   f3
    Stack partial redzone: f4
    Stack after return:    f5
    Stack use after scope: f8
    Global redzone:        f9
    Global init order:     f6
    Poisoned by user:      f7
    ASan internal:         fe
  ==32731==ABORTING

To manage notifications about this bug go to:
https://bugs.launchpad.net/imagemagick/+bug/1542109/+subscriptions