out-of-bounds read in coders/wpg.c:342:19

Bug #1542114 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:000338,sig:06,src:005458,op:havoc,rep:8 /dev/null

=================================================================
==1020==ERROR: AddressSanitizer: heap-buffer-overflow on address 0xb5e108eb at pc 0x889da35 bp 0xbffa92f8 sp 0xbffa92f0
READ of size 1 at 0xb5e108eb thread T0
    #0 0x889da34 in InsertRow /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/coders/wpg.c:342:19
    #1 0x8886e51 in ReadWPGImage /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/coders/wpg.c:1341
    #2 0x8a8ad6a in ReadImage /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickCore/constitute.c:494
    #3 0x8a92bdf in ReadImages /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickCore/constitute.c:844
    #4 0x9375c09 in CLINoImageOperator /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickWand/operation.c:4685
    #5 0x937e0f1 in CLIOption /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickWand/operation.c:5179
    #6 0x910ae9d in ProcessCommandOptions /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickWand/magick-cli.c:474
    #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 0xb7525a82 in __libc_start_main /build/buildd/eglibc-2.19/csu/libc-start.c:287
    #12 0x80ddf94 in _start (/usr/local/bin/magick+0x80ddf94)

0xb5e108eb is located 0 bytes to the right of 27-byte region [0xb5e108d0,0xb5e108eb)
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 0x8a8ad6a in ReadImage /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickCore/constitute.c:494
    #4 0x8a92bdf in ReadImages /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickCore/constitute.c:844
    #5 0x9375c09 in CLINoImageOperator /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickWand/operation.c:4685
    #6 0x937e0f1 in CLIOption /home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickWand/operation.c:5179
    #7 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/wpg.c:342 InsertRow
Shadow bytes around the buggy address:
  0x36bc20c0: fd fd fd fd fa fa fd fd fd fd fa fa fd fd fd fd
  0x36bc20d0: fa fa fd fd fd fd fa fa fd fd fd fd fa fa fd fd
  0x36bc20e0: fd fd fa fa fd fd fd fd fa fa fd fd fd fd fa fa
  0x36bc20f0: fd fd fd fd fa fa fd fd fd fd fa fa fd fd fd fd
  0x36bc2100: fa fa fd fd fd fd fa fa fd fd fd fd fa fa fd fd
=>0x36bc2110: fd fd fa fa fd fd fd fd fa fa 00 00 00[03]fa fa
  0x36bc2120: fd fd fd fd fa fa fd fd fd fd fa fa fd fd fd fd
  0x36bc2130: fa fa fd fd fd fd fa fa fd fd fd fd fa fa fd fd
  0x36bc2140: fd fd fa fa fd fd fd fd fa fa fd fd fd fd fa fa
  0x36bc2150: fd fd fd fd fa fa fd fd fd fd fa fa fd fd fd fd
  0x36bc2160: fa fa fd fd fd fd fa fa fd fd fd fd fa fa 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
==1020==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.