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Message-ID: <1F2D4DA31CA62740BFF46830A0E6A4F7066E5C45@EXMBX-TJ002.tencent.com>
Date: Thu, 8 Sep 2016 05:54:36 +0000
From: winsonliu(刘科) <winsonliu@...cent.com>
To: oss-security <oss-security@...ts.openwall.com>
CC: cve-assign <cve-assign@...re.org>
Subject: CVE Request: OpenJPEG Integer Overflow Issue
Hi,
This is Ke from Tencent's Xuanwu LAB. I reported a security issue of OpenJPEG some days ago and it has been fixed now. The fix is available at https://github.com/uclouvain/openjpeg/commit/c16bc057ba3f125051c9966cf1f5b68a05681de4 and https://github.com/uclouvain/openjpeg/commit/ef01f18dfc6780b776d0674ed3e7415c6ef54d24 .
Could you please assign a CVE number for it?
Thanks.
Regards,
Ke
Tencent's Xuanwu LAB
DESCRIPTION
==============
An integer overflow issue exists in function opj_pi_create_decode of pi.c. It can lead to Out-Of-Bounds Read and Out-Of-Bounds Write in function opj_pi_next_cprl of pi.c (function opj_pi_next_lrcp, opj_pi_next_rlcp, opj_pi_next_rpcl, opj_pi_next_pcrl may also be vulnerable). This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of OpenJPEG.
CREDIT
==============
This vulnerability was discovered by Ke Liu of Tencent's Xuanwu LAB.
TESTED VERSION
==============
Master version of OpenJPEG (2016/08/16)
EXCEPTION LOG
==============
==10074==ERROR: AddressSanitizer: heap-buffer-overflow on address 0xad9370a0 at pc 0xb767ba50 bp 0xbff1ad78 sp 0xbff1ad70
READ of size 2 at 0xad9370a0 thread T0
#0 0xb767ba4f in opj_pi_next_cprl src/lib/openjp2/pi.c:541:12
#1 0xb76644e7 in opj_pi_next src/lib/openjp2/pi.c:1872:11
#2 0xb76cd0af in opj_t2_decode_packets src/lib/openjp2/t2.c:412:24
#3 0xb771ee6e in opj_tcd_t2_decode src/lib/openjp2/tcd.c:1547:15
#4 0xb771de16 in opj_tcd_decode_tile src/lib/openjp2/tcd.c:1286:15
#5 0xb74d7a0e in opj_j2k_decode_tile src/lib/openjp2/j2k.c:8134:15
#6 0xb7563354 in opj_j2k_decode_tiles src/lib/openjp2/j2k.c:9761:23
#7 0xb74bce4c in opj_j2k_exec src/lib/openjp2/j2k.c:7350:43
#8 0xb74f378b in opj_j2k_decode src/lib/openjp2/j2k.c:9959:15
#9 0xb75b80de in opj_jp2_decode src/lib/openjp2/jp2.c:1492:8
#10 0xb7622eb8 in opj_decode src/lib/openjp2/openjpeg.c:412:10
#11 0x8140304 in main src/bin/jp2/opj_decompress.c:1332:10
#12 0xb71b9af2 in __libc_start_main /build/eglibc-X4bnBz/eglibc-2.19/csu/libc-start.c:287
#13 0x80781eb in _start (bin/opj_decompress+0x80781eb)
AddressSanitizer can not describe address in more detail (wild memory access suspected).
SUMMARY: AddressSanitizer: heap-buffer-overflow src/lib/openjp2/pi.c:541 opj_pi_next_cprl
Shadow bytes around the buggy address:
0x35b26dc0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x35b26dd0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x35b26de0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x35b26df0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x35b26e00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
=>0x35b26e10: fa fa fa fa[fa]fa fa fa fa fa fa fa fa fa fa fa
0x35b26e20: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x35b26e30: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x35b26e40: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x35b26e50: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x35b26e60: 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
==10074==ABORTING
SOURCE CODE
==============
1. OOB read and OOB write exist in function opj_pi_next_cprl, function opj_pi_next_lrcp, opj_pi_next_rlcp, opj_pi_next_rpcl, opj_pi_next_pcrl may also be vulnerable.
static OPJ_BOOL opj_pi_next_cprl(opj_pi_iterator_t * pi) {
// ...
for (pi->layno = pi->poc.layno0; pi->layno < pi->poc.layno1; pi->layno++) {
index = pi->layno * pi->step_l + pi->resno * pi->step_r + pi->compno * pi->step_c + pi->precno * pi->step_p;
if (!pi->include[index]) { // ----> Out-Of-Bounds Read!!!
pi->include[index] = 1; // ----> Out-Of-Bounds Write!!!
return OPJ_TRUE;
}
// ...
return OPJ_FALSE;
}
2. Integer overflow exists in function opj_pi_create_decode.
opj_pi_iterator_t *opj_pi_create_decode(opj_image_t *p_image,
opj_cp_t *p_cp,
OPJ_UINT32 p_tile_no)
{
// ...
l_step_p = 1;
l_step_c = l_max_prec * l_step_p;
l_step_r = p_image->numcomps * l_step_c;
l_step_l = l_max_res * l_step_r;
/* set values for first packet iterator */
l_current_pi = l_pi;
/* memory allocation for include */
l_current_pi->include = (OPJ_INT16*) opj_calloc(
(l_tcp->numlayers +1) * l_step_l, sizeof(OPJ_INT16)); // ----> Integer Overflow!!!
// ...
}
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