*** This bug is a security vulnerability ***
Public security bug reported:
This bug was found while fuzzing ImageMagick with afl-fuzz
Tested on ImageMagick git commit %s
Command: magick id:000346,sig:06,src:005762,op:havoc,rep:32 /dev/null
=================================================================
==1064==ERROR: AddressSanitizer: global-buffer-overflow on address 0x0950b2e4
at pc 0x80b2b26 bp 0xbfcdd908 sp 0xbfcdd4ec
READ of size 4096 at 0x0950b2e4 thread T0
#0 0x80b2b25 in memcpy (/usr/local/bin/magick+0x80b2b25)
#1 0x818b8fd in CopyMagickMemory
/home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickCore/memory.c:707:23
#2 0x888dfb8 in ExtractPostscript
/home/user/Desktop/imagemagick_fuzz_results/ImageMagick/coders/wpg.c:787
#3 0x887f751 in ReadWPGImage
/home/user/Desktop/imagemagick_fuzz_results/ImageMagick/coders/wpg.c:1077
#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
#9 0x910e215 in MagickImageCommand
/home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickWand/magick-cli.c:786
#10 0x91126f9 in MagickCommandGenesis
/home/user/Desktop/imagemagick_fuzz_results/ImageMagick/MagickWand/mogrify.c:172
#11 0x80de16d in MagickMain
/home/user/Desktop/imagemagick_fuzz_results/ImageMagick/utilities/magick.c:74
#12 0x80de16d in main
/home/user/Desktop/imagemagick_fuzz_results/ImageMagick/utilities/magick.c:85
#13 0xb74c5a82 in __libc_start_main
/build/buildd/eglibc-2.19/csu/libc-start.c:287
#14 0x80ddf94 in _start (/usr/local/bin/magick+0x80ddf94)
0x0950b2e4 is located 60 bytes to the left of global variable '.str185' from
'MagickCore/magic.c' (0x950b320) of size 6
0x0950b2e4 is located 0 bytes to the right of global variable '.str184' from
'MagickCore/magic.c' (0x950b2e0) of size 4
'.str184' is ascii string 'TTF'
SUMMARY: AddressSanitizer: global-buffer-overflow ??:0 memcpy
Shadow bytes around the buggy address:
0x212a1600: f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9 05 f9 f9 f9
0x212a1610: f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9 05 f9 f9 f9
0x212a1620: f9 f9 f9 f9 05 f9 f9 f9 f9 f9 f9 f9 05 f9 f9 f9
0x212a1630: f9 f9 f9 f9 05 f9 f9 f9 f9 f9 f9 f9 05 f9 f9 f9
0x212a1640: f9 f9 f9 f9 07 f9 f9 f9 f9 f9 f9 f9 00 01 f9 f9
=>0x212a1650: f9 f9 f9 f9 00 01 f9 f9 f9 f9 f9 f9[04]f9 f9 f9
0x212a1660: f9 f9 f9 f9 06 f9 f9 f9 f9 f9 f9 f9 04 f9 f9 f9
0x212a1670: f9 f9 f9 f9 00 00 00 00 01 f9 f9 f9 f9 f9 f9 f9
0x212a1680: 06 f9 f9 f9 f9 f9 f9 f9 00 f9 f9 f9 f9 f9 f9 f9
0x212a1690: 07 f9 f9 f9 f9 f9 f9 f9 05 f9 f9 f9 f9 f9 f9 f9
0x212a16a0: 03 f9 f9 f9 f9 f9 f9 f9 05 f9 f9 f9 f9 f9 f9 f9
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
==1064==ABORTING
** Affects: imagemagick (Ubuntu)
Importance: Undecided
Status: New
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1542115
Title:
out-of-bounds read in MagickCore/memory.c:707:23
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/imagemagick/+bug/1542115/+subscriptions
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
