*** This bug is a security vulnerability ***
Public security bug reported:
This bug was found while fuzzing graphicsmagick with afl-fuzz
Tested on hg changeset 14720:3b1f1e0c1098
Command: gm convert id:000068,sig:06,src:000084,op:havoc,rep:4 /dev/null
=================================================================
==32081==ERROR: AddressSanitizer: heap-buffer-overflow on address 0xb3c03e68 at
pc 0x88a21f7 bp 0xbfde8ac8 sp 0xbfde8ac0
WRITE of size 4 at 0xb3c03e68 thread T0
#0 0x88a21f6 in ReadPSDImage
/home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/coders/psd.c:892
#1 0x8244d62 in ReadImage
/home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/magick/constitute.c:1607
#2 0x812c3ac in ConvertImageCommand
/home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/magick/command.c:4348
#3 0x8165066 in MagickCommand
/home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/magick/command.c:8862
#4 0x81ed0dc in GMCommandSingle
/home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/magick/command.c:17338
#5 0x81ea204 in GMCommand
/home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/magick/command.c:17391
#6 0x80d4a76 in main
/home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/utilities/gm.c:61
#7 0xb7549a82 in __libc_start_main
/build/buildd/eglibc-2.19/csu/libc-start.c:287
#8 0x80d4904 in _start
(/home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/utilities/gm+0x80d4904)
0xb3c03e68 is located 0 bytes to the right of 1512-byte region
[0xb3c03880,0xb3c03e68)
allocated by thread T0 here:
#0 0x80bd531 in __interceptor_malloc
(/home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/utilities/gm+0x80bd531)
#1 0x839bb38 in MagickMalloc
/home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/magick/memory.c:156
#2 0x8244d62 in ReadImage
/home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/magick/constitute.c:1607
#3 0x812c3ac in ConvertImageCommand
/home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/magick/command.c:4348
#4 0x8165066 in MagickCommand
/home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/magick/command.c:8862
#5 0x81ed0dc in GMCommandSingle
/home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/magick/command.c:17338
#6 0x81ea204 in GMCommand
/home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/magick/command.c:17391
#7 0x80d4a76 in main
/home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/utilities/gm.c:61
SUMMARY: AddressSanitizer: heap-buffer-overflow
/home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/coders/psd.c:892
ReadPSDImage
Shadow bytes around the buggy address:
0x36780770: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x36780780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x36780790: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x367807a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x367807b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x367807c0: 00 00 00 00 00 00 00 00 00 00 00 00 00[fa]fa fa
0x367807d0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x367807e0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x367807f0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x36780800: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x36780810: 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
==32081==ABORTING
** Affects: graphicsmagick (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/1537804
Title:
out-of-bounds write in coders/psd.c:892
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/graphicsmagick/+bug/1537804/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
