[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-ID: <2979113.NTRsFXjtRy@blackgate>
Date: Wed, 25 Jan 2017 10:16:01 +0100
From: Agostino Sarubbo <ago@...too.org>
To: oss-security@...ts.openwall.com
Subject: jasper: heap-based buffer overflow in jpc_dec_decodepkt (jpc_t2dec.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 read overflow.
The complete ASan output:
# imginfo -f $FILE
warning: ignoring unknown marker segment (0xff70)
type = 0xff70 (UNKNOWN); len = 35;00 01 43 72 65 61 74 6f 74 3a 30 4a 61 73 50
65 72 00 01 00 00 73 69 6f 6e 20 31 2e 39 30 30 2e 39 warning: trailing
garbage in marker segment (3 bytes)
warning: trailing garbage in marker segment (8 bytes)
warning: trailing garbage in marker segment (6 bytes)
=================================================================
==30315==ERROR: AddressSanitizer: heap-buffer-overflow on address
0x61a00001f808 at pc 0x7fb7b2667e54 bp 0x7ffd0a9ab890 sp 0x7ffd0a9ab888
READ of size 8 at 0x61a00001f808 thread T0
#0 0x7fb7b2667e53 in jpc_dec_decodepkt /tmp/portage/media-
libs/jasper-2.0.10/work/jasper-2.0.10/src/libjasper/jpc/jpc_t2dec.c:245:14
#1 0x7fb7b2667e53 in jpc_dec_decodepkts /tmp/portage/media-
libs/jasper-2.0.10/work/jasper-2.0.10/src/libjasper/jpc/jpc_t2dec.c:454
#2 0x7fb7b25ccd37 in jpc_dec_process_sod /tmp/portage/media-
libs/jasper-2.0.10/work/jasper-2.0.10/src/libjasper/jpc/jpc_dec.c:628:6
#3 0x7fb7b25d6853 in jpc_dec_decode /tmp/portage/media-
libs/jasper-2.0.10/work/jasper-2.0.10/src/libjasper/jpc/jpc_dec.c:425:10
#4 0x7fb7b25d6853 in jpc_decode /tmp/portage/media-
libs/jasper-2.0.10/work/jasper-2.0.10/src/libjasper/jpc/jpc_dec.c:262
#5 0x7fb7b25a6231 in jp2_decode /tmp/portage/media-
libs/jasper-2.0.10/work/jasper-2.0.10/src/libjasper/jp2/jp2_dec.c:218:21
#6 0x7fb7b2568214 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
#7 0x50a3be in main /tmp/portage/media-
libs/jasper-2.0.10/work/jasper-2.0.10/src/appl/imginfo.c:238:16
#8 0x7fb7b164878f in __libc_start_main /tmp/portage/sys-libs/glibc-2.23-
r3/work/glibc-2.23/csu/../csu/libc-start.c:289
#9 0x419cd8 in _start (/usr/bin/imginfo+0x419cd8)
0x61a00001f808 is located 48 bytes to the right of 1368-byte region
[0x61a00001f280,0x61a00001f7d8)
allocated by thread T0 here:
#0 0x4d2a98 in malloc /tmp/portage/sys-
devel/llvm-3.9.1/work/llvm-3.9.1.src/projects/compiler-
rt/lib/asan/asan_malloc_linux.cc:64
#1 0x7fb7b2575160 in jas_malloc /tmp/portage/media-
libs/jasper-2.0.10/work/jasper-2.0.10/src/libjasper/base/jas_malloc.c:242:11
#2 0x7fb7b2575160 in jas_alloc2 /tmp/portage/media-
libs/jasper-2.0.10/work/jasper-2.0.10/src/libjasper/base/jas_malloc.c:275
#3 0x7fb7b25ca2bf in jpc_dec_tileinit /tmp/portage/media-
libs/jasper-2.0.10/work/jasper-2.0.10/src/libjasper/jpc/jpc_dec.c:841:24
#4 0x7fb7b25ca2bf in jpc_dec_process_sod /tmp/portage/media-
libs/jasper-2.0.10/work/jasper-2.0.10/src/libjasper/jpc/jpc_dec.c:594
#5 0x7fb7b25d6853 in jpc_dec_decode /tmp/portage/media-
libs/jasper-2.0.10/work/jasper-2.0.10/src/libjasper/jpc/jpc_dec.c:425:10
#6 0x7fb7b25d6853 in jpc_decode /tmp/portage/media-
libs/jasper-2.0.10/work/jasper-2.0.10/src/libjasper/jpc/jpc_dec.c:262
#7 0x7fb7b25a6231 in jp2_decode /tmp/portage/media-
libs/jasper-2.0.10/work/jasper-2.0.10/src/libjasper/jp2/jp2_dec.c:218:21
#8 0x7fb7b2568214 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
#9 0x50a3be in main /tmp/portage/media-
libs/jasper-2.0.10/work/jasper-2.0.10/src/appl/imginfo.c:238:16
#10 0x7fb7b164878f in __libc_start_main /tmp/portage/sys-libs/glibc-2.23-
r3/work/glibc-2.23/csu/../csu/libc-start.c:289
SUMMARY: AddressSanitizer: heap-buffer-overflow /tmp/portage/media-
libs/jasper-2.0.10/work/jasper-2.0.10/src/libjasper/jpc/jpc_t2dec.c:245:14 in
jpc_dec_decodepkt
Shadow bytes around the buggy address:
0x0c347fffbeb0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c347fffbec0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c347fffbed0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c347fffbee0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c347fffbef0: 00 00 00 00 00 00 00 00 00 00 00 fa fa fa fa fa
=>0x0c347fffbf00: fa[fa]fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c347fffbf10: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c347fffbf20: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c347fffbf30: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c347fffbf40: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c347fffbf50: 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
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
==30315==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/00126-jasper-heapoverflow-jpc_dec_decodepkt
Timeline:
2017-01-25: 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-heap-based-buffer-overflow-in-jpc_dec_decodepkt-jpc_t2dec-c
--
Agostino Sarubbo
Gentoo Linux Developer
Powered by blists - more mailing lists
Please check out the
Open Source Software Security Wiki, which is counterpart to this
mailing list.
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
