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 on an updated version (1.900.5) revealed a NULL pointer access in jp2_colr_destroy
The complete ASan output:
# imginfo -f $FILE
cannot copy box data
ASAN:DEADLYSIGNAL
=================================================================
==19664==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x00000041defd bp 0xbebebebebebebebe sp 0x7ffc50768570 T0)
#0 0x41defc in atomic_compare_exchange_strong /var/tmp/portage/sys-devel/llvm-3.8.1-r2/work/llvm-3.8.1.src/projects/compiler-rt/lib/asan/../sanitizer_common/sanitizer_atomic_clang.h:81
#1 0x41defc in __asan::Allocator::AtomicallySetQuarantineFlag(__asan::AsanChunk*, void*, __sanitizer::BufferedStackTrace*) /var/tmp/portage/sys-devel/llvm-3.8.1-r2/work/llvm-3.8.1.src/projects/compiler-rt/lib/asan/asan_allocator.cc:465
#2 0x41defc in __asan::Allocator::Deallocate(void*, unsigned long, __sanitizer::BufferedStackTrace*, __asan::AllocType) /var/tmp/portage/sys-devel/llvm-3.8.1-r2/work/llvm-3.8.1.src/projects/compiler-rt/lib/asan/asan_allocator.cc:525
#3 0x41defc in __asan::asan_free(void*, __sanitizer::BufferedStackTrace*, __asan::AllocType) /var/tmp/portage/sys-devel/llvm-3.8.1-r2/work/llvm-3.8.1.src/projects/compiler-rt/lib/asan/asan_allocator.cc:709
#4 0x4c008c in free /var/tmp/portage/sys-devel/llvm-3.8.1-r2/work/llvm-3.8.1.src/projects/compiler-rt/lib/asan/asan_malloc_linux.cc:41
#5 0x7f8dcb5bc940 in jp2_colr_destroy /tmp/portage/media-libs/jasper-1.900.5/work/jasper-1.900.5/src/libjasper/jp2/jp2_cod.c:443:3
#6 0x7f8dcb5c1f69 in jp2_box_destroy /tmp/portage/media-libs/jasper-1.900.5/work/jasper-1.900.5/src/libjasper/jp2/jp2_cod.c:211:3
#7 0x7f8dcb5c1f69 in jp2_box_get /tmp/portage/media-libs/jasper-1.900.5/work/jasper-1.900.5/src/libjasper/jp2/jp2_cod.c:307
#8 0x7f8dcb5c5dc0 in jp2_decode /tmp/portage/media-libs/jasper-1.900.5/work/jasper-1.900.5/src/libjasper/jp2/jp2_dec.c:156:16
#9 0x7f8dcb556f39 in jas_image_decode /tmp/portage/media-libs/jasper-1.900.5/work/jasper-1.900.5/src/libjasper/base/jas_image.c:380:16
#10 0x4f1686 in main /tmp/portage/media-libs/jasper-1.900.5/work/jasper-1.900.5/src/appl/imginfo.c:188:16
#11 0x7f8dca66561f in __libc_start_main /var/tmp/portage/sys-libs/glibc-2.22-r4/work/glibc-2.22/csu/libc-start.c:289
#12 0x418e68 in _init (/usr/bin/imginfo+0x418e68)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /var/tmp/portage/sys-devel/llvm-3.8.1-r2/work/llvm-3.8.1.src/projects/compiler-rt/lib/asan/../sanitizer_common/sanitizer_atomic_clang.h:81 in atomic_compare_exchange_strong
==19664==ABORTING
Affected version:
1.900.5
Fixed version:
1.900.10
Commit fix:
https://github.com/mdadams/jasper/commit/e24bdc716c3327b067c551bc6cfb97fd2370358d
Credit:
This bug was discovered by Agostino Sarubbo of Gentoo.
CVE:
CVE-2016-8887
Timeline:
2016-10-17: bug discovered
2016-10-17: bug reported to upstream
2016-10-18: blog post about the issue
2016-10-21: upstream released a patch
2016-10-23: CVE assigned
Note:
This bug was found with American Fuzzy Lop.
Permalink:
jasper: NULL pointer dereference in jp2_colr_destroy (jp2_cod.c)