SEGV in utilities/gm+0x807a361)

[Moshe Kaplan]

This bug was found while fuzzing graphicsmagick with afl-fuzz

Tested on hg changeset 14720:3b1f1e0c1098

Command: gm convert %s /dev/null

ASAN:SIGSEGV
=================================================================
==22695==ERROR: AddressSanitizer: SEGV on unknown address 0xbebebeae (pc 0x0807a362 sp 0xbfb772b0 bp 0xbfb77340 T0)
    #0 0x807a361 in __asan::Deallocate(void*, __sanitizer::StackTrace*, __asan::AllocType) (/home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/utilities/gm+0x807a361)
    #1 0x807a313 in __asan::asan_free(void*, __sanitizer::StackTrace*, __asan::AllocType) (/home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/utilities/gm+0x807a313)
    #2 0x80bd3d1 in free (/home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/utilities/gm+0x80bd3d1)
    #3 0x839da78 in MagickFree /home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/magick/memory.c:509
    #4 0x89c572e in ReadXPMImage /home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/coders/xpm.c:324
    #5 0x8244d62 in ReadImage /home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/magick/constitute.c:1607
    #6 0x812c3ac in ConvertImageCommand /home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/magick/command.c:4348
    #7 0x8165066 in MagickCommand /home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/magick/command.c:8862
    #8 0x81ed0dc in GMCommandSingle /home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/magick/command.c:17338
    #9 0x81ea204 in GMCommand /home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/magick/command.c:17391
    #10 0x80d4a76 in main /home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/utilities/gm.c:61
    #11 0xb754ea82 in __libc_start_main /build/buildd/eglibc-2.19/csu/libc-start.c:287
    #12 0x80d4904 in _start (/home/user/Desktop/graphicsmagick_fuzz_results/graphicsmagick/utilities/gm+0x80d4904)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV ??:0 __asan::Deallocate(void*, __sanitizer::StackTrace*, __asan::AllocType)
==22695==ABORTING

[Moshe Kaplan (moshekaplan)]

input file to trigger crash

[Tyler Hicks (tyhicks)]

Thanks for fuzzing graphicsmagick and reporting this issue. Since graphicsmagick is in universe, it is community maintained. I also see that you fuzzed a branch of the upstream Mercurial tree. If you are able, I suggest coordinating directly with upstream GraphicsMagick. Once fixes are available, you may want to post a debdiff for this issue. When a debdiff is available, members of the security team will review it and publish the package. See the following link for more information: https://wiki.ubuntu.com/SecurityTeam/UpdateProcedures

[Bob Friesenhahn (bfriesen)]

This bug is present in all Ubuntu versions, is now fixed in upstream Mercurial, and the fix will be included in GraphicsMagick 1.3.24.

[Launchpad Janitor (janitor)]

[Expired for graphicsmagick (Ubuntu) because there has been no activity for 60 days.]