DESCRIPTION

An Out-of-Bounds Write issue can be occurred in function opj_mqc_byteout of mqc.c during executing opj_compress. This issue was caused by a malformed BMP file.

CREDIT

This vulnerability was discovered by Ke Liu of Tencent's Xuanwu LAB.

TESTED VERSION

Master version of OpenJPEG (805972f, 2016/09/12)

EXCEPTION LOG

==119535==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60200000eeb5 
 at pc 0x7f1b2f0154c2 bp 0x7ffec8559cc0 sp 0x7ffec8559cb8
WRITE of size 1 at 0x60200000eeb5 thread T0
    #0 0x7f1b2f0154c1 in opj_mqc_byteout openjpeg-master/src/lib/openjp2/mqc.c:221:13
    #1 0x7f1b2f014bec in opj_mqc_flush openjpeg-master/src/lib/openjp2/mqc.c:421:2
    #2 0x7f1b2f042190 in opj_t1_encode_cblk openjpeg-master/src/lib/openjp2/t1.c:1685:3
    #3 0x7f1b2f040929 in opj_t1_encode_cblks openjpeg-master/src/lib/openjp2/t1.c:1539:7
    #4 0x7f1b2f06950d in opj_tcd_t1_encode openjpeg-master/src/lib/openjp2/tcd.c:2052:15
    #5 0x7f1b2f067b66 in opj_tcd_encode_tile openjpeg-master/src/lib/openjp2/tcd.c:1240:23
    #6 0x7f1b2efecc4f in opj_j2k_write_sod openjpeg-master/src/lib/openjp2/j2k.c:4358:15
    #7 0x7f1b2efea900 in opj_j2k_write_first_tile_part openjpeg-master/src/lib/openjp2/j2k.c:10659:15
    #8 0x7f1b2efc6d65 in opj_j2k_post_write_tile openjpeg-master/src/lib/openjp2/j2k.c:10448:15
    #9 0x7f1b2efc52c7 in opj_j2k_encode openjpeg-master/src/lib/openjp2/j2k.c:10199:23
    #10 0x7f1b2f00367c in opj_jp2_encode openjpeg-master/src/lib/openjp2/jp2.c:1955:9
    #11 0x7f1b2f01b304 in opj_encode openjpeg-master/src/lib/openjp2/openjpeg.c:737:11
    #12 0x4edc7d in main openjpeg-master/src/bin/jp2/opj_compress.c:1877:36
    #13 0x7f1b2d77682f in __libc_start_main /build/glibc-GKVZIf/glibc-2.23/csu/../csu/libc-start.c:291
    #14 0x41a898 in _start (openjpeg-master/bin/opj_compress+0x41a898)

0x60200000eeb5 is located 0 bytes to the right of 5-byte region [0x60200000eeb0,0x60200000eeb5)
allocated by thread T0 here:
    #0 0x4ba9c8 in malloc (openjpeg-master/bin/opj_compress+0x4ba9c8)
    #1 0x7f1b2f07369c in opj_malloc openjpeg-master/src/lib/openjp2/opj_malloc.c:195:10
    #2 0x7f1b2f06ed5f in opj_tcd_code_block_enc_allocate_data openjpeg-master/src/lib/openjp2/tcd.c:1097:36
    #3 0x7f1b2f0664b0 in opj_tcd_init_tile openjpeg-master/src/lib/openjp2/tcd.c:1023:14
    #4 0x7f1b2f0604e6 in opj_tcd_init_encode_tile openjpeg-master/src/lib/openjp2/tcd.c:1055:9
    #5 0x7f1b2efc57d3 in opj_j2k_pre_write_tile openjpeg-master/src/lib/openjp2/j2k.c:10300:15
    #6 0x7f1b2efc4d8d in opj_j2k_encode openjpeg-master/src/lib/openjp2/j2k.c:10146:23
    #7 0x7f1b2f00367c in opj_jp2_encode openjpeg-master/src/lib/openjp2/jp2.c:1955:9
    #8 0x7f1b2f01b304 in opj_encode openjpeg-master/src/lib/openjp2/openjpeg.c:737:11
    #9 0x4edc7d in main openjpeg-master/src/bin/jp2/opj_compress.c:1877:36
    #10 0x7f1b2d77682f in __libc_start_main /build/glibc-GKVZIf/glibc-2.23/csu/../csu/libc-start.c:291

SUMMARY: AddressSanitizer: heap-buffer-overflow openjpeg-master/src/lib/openjp2/mqc.c:221:13 in opj_mqc_byteout
Shadow bytes around the buggy address:
  0x0c047fff9d80: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9d90: fa fa fa fa fa fa fa fa fa fa fa fa fa fa 05 fa
  0x0c047fff9da0: fa fa 00 01 fa fa 05 fa fa fa 00 01 fa fa 05 fa
  0x0c047fff9db0: fa fa 00 01 fa fa 05 fa fa fa 00 01 fa fa 05 fa
  0x0c047fff9dc0: fa fa 00 01 fa fa 05 fa fa fa 00 01 fa fa 05 fa
=>0x0c047fff9dd0: fa fa 00 01 fa fa[05]fa fa fa 00 01 fa fa 00 fa
  0x0c047fff9de0: fa fa fd fd fa fa fd fd fa fa 00 00 fa fa 04 fa
  0x0c047fff9df0: fa fa 00 00 fa fa 00 00 fa fa 00 00 fa fa 00 00
  0x0c047fff9e00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9e10: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9e20: 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
==119535==ABORTING


Proof of Concept:
https://github.com/offensive-security/exploitdb-bin-sploits/raw/master/bin-sploits/42600.zip