[Bug 1537422] Re: out-of-bounds read in coders/meta.c:465

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

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Title:
  out-of-bounds read in coders/meta.c:465

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

Bug description:
  =================================================================
  ==19799==ERROR: AddressSanitizer: heap-buffer-overflow on address 0xb480485d at pc 0x85b324e bp 0xbfcaa3a8 sp 0xbfcaa3a0
  READ of size 1 at 0xb480485d thread T0
      #0 0x85b324d in parse8BIM /home/user/Desktop/ImageMagick/coders/meta.c:465
      #1 0x85b324d in ReadMETAImage /home/user/Desktop/ImageMagick/coders/meta.c:1201
      #2 0x8a9438a in ReadImage /home/user/Desktop/ImageMagick/MagickCore/constitute.c:494
      #3 0x8a9c1ff in ReadImages /home/user/Desktop/ImageMagick/MagickCore/constitute.c:844
      #4 0x9371649 in CLINoImageOperator /home/user/Desktop/ImageMagick/MagickWand/operation.c:4663
      #5 0x9379b31 in CLIOption /home/user/Desktop/ImageMagick/MagickWand/operation.c:5157
      #6 0x910713d in ProcessCommandOptions /home/user/Desktop/ImageMagick/MagickWand/magick-cli.c:474
      #7 0x910a4b5 in MagickImageCommand /home/user/Desktop/ImageMagick/MagickWand/magick-cli.c:786
      #8 0x910e999 in MagickCommandGenesis /home/user/Desktop/ImageMagick/MagickWand/mogrify.c:172
      #9 0x80de12d in MagickMain /home/user/Desktop/ImageMagick/utilities/magick.c:74
      #10 0x80de12d in main /home/user/Desktop/ImageMagick/utilities/magick.c:85
      #11 0xb74bba82 in __libc_start_main /build/buildd/eglibc-2.19/csu/libc-start.c:287
      #12 0x80ddf54 in _start (/usr/local/bin/magick+0x80ddf54)

  0xb480485d is located 0 bytes to the right of 61-byte region [0xb4804820,0xb480485d)
  allocated by thread T0 here:
      #0 0x80c6b81 in malloc (/usr/local/bin/magick+0x80c6b81)
      #1 0x81932f9 in AcquireMagickMemory /home/user/Desktop/ImageMagick/MagickCore/memory.c:475
      #2 0x81932f9 in AcquireQuantumMemory /home/user/Desktop/ImageMagick/MagickCore/memory.c:548
      #3 0x8a9438a in ReadImage /home/user/Desktop/ImageMagick/MagickCore/constitute.c:494
      #4 0x8a9c1ff in ReadImages /home/user/Desktop/ImageMagick/MagickCore/constitute.c:844
      #5 0x9371649 in CLINoImageOperator /home/user/Desktop/ImageMagick/MagickWand/operation.c:4663
      #6 0x9379b31 in CLIOption /home/user/Desktop/ImageMagick/MagickWand/operation.c:5157
      #7 0x910713d in ProcessCommandOptions /home/user/Desktop/ImageMagick/MagickWand/magick-cli.c:474

  SUMMARY: AddressSanitizer: heap-buffer-overflow /home/user/Desktop/ImageMagick/coders/meta.c:465 parse8BIM
  Shadow bytes around the buggy address:
    0x369008b0: 00 00 00 00 00 00 00 04 fa fa fa fa 00 00 00 00
    0x369008c0: 00 00 00 04 fa fa fa fa 00 00 00 00 00 00 00 04
    0x369008d0: fa fa fa fa 00 00 00 00 00 00 00 04 fa fa fa fa
    0x369008e0: 00 00 00 00 00 00 00 04 fa fa fa fa 00 00 00 00
    0x369008f0: 00 00 00 04 fa fa fa fa 00 00 00 00 00 00 00 04
  =>0x36900900: fa fa fa fa 00 00 00 00 00 00 00[05]fa fa fa fa
    0x36900910: 00 00 00 00 00 00 00 04 fa fa fa fa 00 00 00 00
    0x36900920: 00 00 00 04 fa fa fa fa 00 00 00 00 00 00 00 04
    0x36900930: fa fa fa fa 00 00 00 00 00 00 00 04 fa fa fa fa
    0x36900940: 00 00 00 00 00 00 00 04 fa fa fa fa 00 00 00 00
    0x36900950: 00 00 00 04 fa fa fa fa 00 00 00 00 00 00 00 04
  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
  ==19799==ABORTING

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