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Date: Wed, 25 Jan 2017 10:10:35 +0100
From: Agostino Sarubbo <ago@...too.org>
To: oss-security@...ts.openwall.com
Subject: jasper: NULL pointer dereference in jp2_cdef_destroy (jp2_cod.c)
Description:
jasper is an open-source initiative to provide a free software-based reference
implementation of the codec specified in the JPEG-2000 Part-1 standard.
Another round of fuzzing shows that a crafted image causes a NULL pointer
access.
The complete ASan output:
# imginfo -f $FILE
cannot parse box data
ASAN:DEADLYSIGNAL
=================================================================
==6697==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc
0x00000041da35 bp 0xbebebebebebebeae sp 0x7fff60ad6480 T0)
#0 0x41da34 in atomic_compare_exchange_strong /tmp/portage/sys-
devel/llvm-3.9.1/work/llvm-3.9.1.src/projects/compiler-
rt/lib/asan/../sanitizer_common/sanitizer_atomic_clang.h:81
#1 0x41da34 in
__asan::Allocator::AtomicallySetQuarantineFlagIfAllocated(__asan::AsanChunk*,
void*, __sanitizer::BufferedStackTrace*) /tmp/portage/sys-
devel/llvm-3.9.1/work/llvm-3.9.1.src/projects/compiler-
rt/lib/asan/asan_allocator.cc:468
#2 0x41da34 in __asan::Allocator::Deallocate(void*, unsigned long,
__sanitizer::BufferedStackTrace*, __asan::AllocType) /tmp/portage/sys-
devel/llvm-3.9.1/work/llvm-3.9.1.src/projects/compiler-
rt/lib/asan/asan_allocator.cc:522
#3 0x41da34 in __asan::asan_free(void*, __sanitizer::BufferedStackTrace*,
__asan::AllocType) /tmp/portage/sys-
devel/llvm-3.9.1/work/llvm-3.9.1.src/projects/compiler-
rt/lib/asan/asan_allocator.cc:725
#4 0x4d271c in free /tmp/portage/sys-
devel/llvm-3.9.1/work/llvm-3.9.1.src/projects/compiler-
rt/lib/asan/asan_malloc_linux.cc:50
#5 0x7f86ef11c995 in jp2_cdef_destroy /tmp/portage/media-
libs/jasper-2.0.10/work/jasper-2.0.10/src/libjasper/jp2/jp2_cod.c:230:3
#6 0x7f86ef11e18e in jp2_box_destroy /tmp/portage/media-
libs/jasper-2.0.10/work/jasper-2.0.10/src/libjasper/jp2/jp2_cod.c:212:3
#7 0x7f86ef11e18e in jp2_box_get /tmp/portage/media-
libs/jasper-2.0.10/work/jasper-2.0.10/src/libjasper/jp2/jp2_cod.c:319
#8 0x7f86ef1219f6 in jp2_decode /tmp/portage/media-
libs/jasper-2.0.10/work/jasper-2.0.10/src/libjasper/jp2/jp2_dec.c:159:16
#9 0x7f86ef0e4214 in jas_image_decode /tmp/portage/media-
libs/jasper-2.0.10/work/jasper-2.0.10/src/libjasper/base/jas_image.c:444:16
#10 0x50a3be in main /tmp/portage/media-
libs/jasper-2.0.10/work/jasper-2.0.10/src/appl/imginfo.c:238:16
#11 0x7f86ee1c478f in __libc_start_main /tmp/portage/sys-libs/glibc-2.23-
r3/work/glibc-2.23/csu/../csu/libc-start.c:289
#12 0x419cd8 in _start (/usr/bin/imginfo+0x419cd8)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /tmp/portage/sys-
devel/llvm-3.9.1/work/llvm-3.9.1.src/projects/compiler-
rt/lib/asan/../sanitizer_common/sanitizer_atomic_clang.h:81 in
atomic_compare_exchange_strong
==6697==ABORTING
Affected version:
2.0.10
Fixed version:
N/A
Commit fix:
N/A
Credit:
This bug was discovered by Agostino Sarubbo of Gentoo.
CVE:
N/A
Reproducer:
https://github.com/asarubbo/poc/blob/master/00124-jasper-nullptr-jp2_cdef_destroy
Timeline:
2017-01-18: bug discovered and reported upstream
2017-01-25: blog post about the issue
Note:
This bug was found with American Fuzzy Lop.
Permalink:
https://blogs.gentoo.org/ago/2017/01/25/jasper-null-pointer-dereference-in-jp2_cdef_destroy-jp2_cod-c
--
Agostino Sarubbo
Gentoo Linux Developer
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