out-of-bounds read in MagickCore/memory.c:708

[Moshe Kaplan]

This bug was found while fuzzing ImageMagick with afl-fuzz

Tested on ImageMagick git commit 26ac8585e46188a648abf5fa3a1a7d264d8b3cb9

Command: magick id:000419,sig:06,src:001803+004110,op:splice,rep:2 /dev/null

=================================================================
==21785==ERROR: AddressSanitizer: heap-buffer-overflow on address 0xb5f02440 at pc 0x80b28f6 bp 0xbfc57ed8 sp 0xbfc57abc
READ of size 128 at 0xb5f02440 thread T0
    #0 0x80b28f5 in memcpy (/usr/local/bin/magick+0x80b28f5)
    #1 0x814f571 in CopyMagickMemory /home/user/Desktop/FuzzImageMagick-master/ImageMagick/MagickCore/memory.c:708
    #2 0x857643b in WritePDBImage /home/user/Desktop/FuzzImageMagick-master/ImageMagick/coders/pdb.c:893
    #3 0x89633b8 in WriteImage /home/user/Desktop/FuzzImageMagick-master/ImageMagick/MagickCore/constitute.c:1091
    #4 0x8966d9c in WriteImages /home/user/Desktop/FuzzImageMagick-master/ImageMagick/MagickCore/constitute.c:1309
    #5 0x9230a7f in CLINoImageOperator /home/user/Desktop/FuzzImageMagick-master/ImageMagick/MagickWand/operation.c:4730
    #6 0x9238891 in CLIOption /home/user/Desktop/FuzzImageMagick-master/ImageMagick/MagickWand/operation.c:5190
    #7 0x8fc3893 in ProcessCommandOptions /home/user/Desktop/FuzzImageMagick-master/ImageMagick/MagickWand/magick-cli.c:526
    #8 0x8fc5d15 in MagickImageCommand /home/user/Desktop/FuzzImageMagick-master/ImageMagick/MagickWand/magick-cli.c:786
    #9 0x8fca1f9 in MagickCommandGenesis /home/user/Desktop/FuzzImageMagick-master/ImageMagick/MagickWand/mogrify.c:172
    #10 0x80ddf3d in MagickMain /home/user/Desktop/FuzzImageMagick-master/ImageMagick/utilities/magick.c:74
    #11 0x80ddf3d in main /home/user/Desktop/FuzzImageMagick-master/ImageMagick/utilities/magick.c:85
    #12 0xb74b1a82 in __libc_start_main /build/eglibc-617sU_/eglibc-2.19/csu/libc-start.c:287
    #13 0x80ddd64 in _start (/usr/local/bin/magick+0x80ddd64)

0xb5f02440 is located 0 bytes to the right of 256-byte region [0xb5f02340,0xb5f02440)
allocated by thread T0 here:
    #0 0x80c6991 in malloc (/usr/local/bin/magick+0x80c6991)
    #1 0x814e9ea in AcquireMagickMemory /home/user/Desktop/FuzzImageMagick-master/ImageMagick/MagickCore/memory.c:476
    #2 0x814e9ea in AcquireQuantumMemory /home/user/Desktop/FuzzImageMagick-master/ImageMagick/MagickCore/memory.c:549
    #3 0x89633b8 in WriteImage /home/user/Desktop/FuzzImageMagick-master/ImageMagick/MagickCore/constitute.c:1091
    #4 0x8966d9c in WriteImages /home/user/Desktop/FuzzImageMagick-master/ImageMagick/MagickCore/constitute.c:1309
    #5 0x9230a7f in CLINoImageOperator /home/user/Desktop/FuzzImageMagick-master/ImageMagick/MagickWand/operation.c:4730
    #6 0x9238891 in CLIOption /home/user/Desktop/FuzzImageMagick-master/ImageMagick/MagickWand/operation.c:5190
    #7 0x8fc3893 in ProcessCommandOptions /home/user/Desktop/FuzzImageMagick-master/ImageMagick/MagickWand/magick-cli.c:526

SUMMARY: AddressSanitizer: heap-buffer-overflow ??:0 memcpy
Shadow bytes around the buggy address:
  0x36be0430: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x36be0440: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x36be0450: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x36be0460: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
  0x36be0470: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x36be0480: 00 00 00 00 00 00 00 00[fa]fa fa fa fa fa fa fa
  0x36be0490: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x36be04a0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x36be04b0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x36be04c0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x36be04d0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
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
==21785==ABORTING

[Moshe Kaplan (moshekaplan)]

input file to trigger crash

[Moshe Kaplan (moshekaplan)]

https://github.com/ImageMagick/ImageMagick/issues/143

[Launchpad Janitor (janitor)]

This bug was fixed in the package imagemagick - 8:6.9.6.6+dfsg-1ubuntu3

---------------
imagemagick (8:6.9.6.6+dfsg-1ubuntu3) zesty; urgency=medium

  * debian/patches/0020-Revert-GradientImage-change.patch: Revert patch
    per https://github.com/ImageMagick/ImageMagick/issues/316. Thanks
    to Cristy <email address hidden>. Closes LP: #1645406.

 -- Nishanth Aravamudan <email address hidden> Tue, 06 Dec 2016 17:26:36 +0100