out-of-bounds write in coders/pdb.c:697

Bug #1542112 reported by Moshe Kaplan on 2016-02-05
256
This bug affects 1 person
Affects Status Importance Assigned to Milestone
imagemagick (Ubuntu)
Undecided
Unassigned

Bug Description

This bug was found while fuzzing ImageMagick with afl-fuzz

Tested on ImageMagick git commit %s

Command: magick id:000248,sig:06,src:003373,op:havoc,rep:8 /dev/null

=================================================================
==607==ERROR: AddressSanitizer: heap-buffer-overflow on address 0xb5b07113 at pc 0x866c784 bp 0xbf92de28 sp 0xbf92de20
WRITE of size 1 at 0xb5b07113 thread T0
    #0 0x866c783 in EncodeRLE /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/coders/pdb.c:697
    #1 0x866c783 in WritePDBImage /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/coders/pdb.c:906
    #2 0x8a95688 in WriteImage /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickCore/constitute.c:1091
    #3 0x8a9906c in WriteImages /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickCore/constitute.c:1309
    #4 0x93762df in CLINoImageOperator /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickWand/operation.c:4719
    #5 0x937e0f1 in CLIOption /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickWand/operation.c:5179
    #6 0x910bd93 in ProcessCommandOptions /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickWand/magick-cli.c:526
    #7 0x910e215 in MagickImageCommand /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickWand/magick-cli.c:786
    #8 0x91126f9 in MagickCommandGenesis /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickWand/mogrify.c:172
    #9 0x80de16d in MagickMain /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/utilities/magick.c:74
    #10 0x80de16d in main /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/utilities/magick.c:85
    #11 0xb7490a82 in __libc_start_main /build/buildd/eglibc-2.19/csu/libc-start.c:287
    #12 0x80ddf94 in _start (/usr/local/bin/magick+0x80ddf94)

0xb5b07113 is located 0 bytes to the right of 3-byte region [0xb5b07110,0xb5b07113)
allocated by thread T0 here:
    #0 0x80c6bc1 in malloc (/usr/local/bin/magick+0x80c6bc1)
    #1 0x81889a9 in AcquireMagickMemory /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickCore/memory.c:475
    #2 0x81889a9 in AcquireQuantumMemory /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickCore/memory.c:548
    #3 0x8a95688 in WriteImage /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickCore/constitute.c:1091
    #4 0x8a9906c in WriteImages /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickCore/constitute.c:1309
    #5 0x93762df in CLINoImageOperator /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickWand/operation.c:4719
    #6 0x937e0f1 in CLIOption /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickWand/operation.c:5179
    #7 0x910bd93 in ProcessCommandOptions /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickWand/magick-cli.c:526

SUMMARY: AddressSanitizer: heap-buffer-overflow /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/coders/pdb.c:697 EncodeRLE
Shadow bytes around the buggy address:
  0x36b60dd0: fa fa 00 fa fa fa 00 fa fa fa 00 fa fa fa 00 fa
  0x36b60de0: fa fa 00 fa fa fa 00 fa fa fa 00 fa fa fa 00 fa
  0x36b60df0: fa fa 00 fa fa fa 00 fa fa fa 00 fa fa fa 00 fa
  0x36b60e00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x36b60e10: fa fa fa fa fa fa fa fa fa fa 04 fa fa fa 02 fa
=>0x36b60e20: fa fa[03]fa fa fa 00 00 fa fa 00 04 fa fa 00 00
  0x36b60e30: fa fa 00 04 fa fa 00 04 fa fa 00 04 fa fa 00 04
  0x36b60e40: fa fa 00 04 fa fa 00 07 fa fa fd fd fa fa fd fd
  0x36b60e50: fa fa 00 fa fa fa fd fd fa fa fd fd fa fa 00 fa
  0x36b60e60: fa fa 00 fa fa fa 00 fa fa fa 00 fa fa fa 00 fa
  0x36b60e70: fa fa 00 fa fa fa 00 fa fa fa 00 fa fa fa 00 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
==607==ABORTING

Moshe Kaplan (mk-moshe-kaplan) wrote :

input file to trigger crash

Changed in imagemagick (Ubuntu):
status: New → Confirmed
Launchpad Janitor (janitor) wrote :

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

Changed in imagemagick (Ubuntu):
status: Confirmed → Fix Released
To post a comment you must log in.
This report contains Public Security information  Edit
Everyone can see this security related information.

Other bug subscribers

Remote bug watches

Bug watches keep track of this bug in other bug trackers.