Description

Out of Bounds Read in MP4Box.

Version

$ ./bin/gcc/MP4Box -version
MP4Box - GPAC version 2.3-DEV-revrelease
(c) 2000-2023 Telecom Paris distributed under LGPL v2.1+ - http://gpac.io

Please cite our work in your research:
	GPAC Filters: https://doi.org/10.1145/3339825.3394929
	GPAC: https://doi.org/10.1145/1291233.1291452

GPAC Configuration: --enable-sanitizer
Features: GPAC_CONFIG_LINUX GPAC_64_BITS GPAC_HAS_IPV6 GPAC_HAS_SSL GPAC_HAS_SOCK_UN GPAC_MINIMAL_ODF GPAC_HAS_QJS GPAC_HAS_LINUX_DVB  GPAC_DISABLE_3D

Reproduce

complie and run

./configure --enable-sanitizer
make

Proof of Concept

./bin/gcc/MP4Box -dash 1000 ./crash000086

poc_crash000086 is here

ASAN

information reported by sanitizer

$ ./bin/gcc/MP4Box -dash 1000 ./crash000086
=================================================================
==3400280==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x629000059200 at pc 0x7f9f454eb2ad bp 0x7ffc60dd7560 sp 0x7ffc60dd7550
READ of size 1 at 0x629000059200 thread T0
    #0 0x7f9f454eb2ac in MPEG12_ParseSeqHdr media_tools/mpeg2_ps.c:273
    #1 0x7f9f454ee983 in get_info_from_frame media_tools/mpeg2_ps.c:990
    #2 0x7f9f454ee983 in get_info_for_all_streams media_tools/mpeg2_ps.c:1203
    #3 0x7f9f454ee983 in mpeg2ps_scan_file media_tools/mpeg2_ps.c:1368
    #4 0x7f9f454ee983 in mpeg2ps_init media_tools/mpeg2_ps.c:1625
    #5 0x7f9f45b2150c in m2psdmx_process filters/dmx_mpegps.c:327
    #6 0x7f9f459ae33e in gf_filter_process_task filter_core/filter.c:2971
    #7 0x7f9f4596d66a in gf_fs_thread_proc filter_core/filter_session.c:1962
    #8 0x7f9f4597afd6 in gf_fs_run filter_core/filter_session.c:2261
    #9 0x7f9f45310a9d in gf_dasher_process media_tools/dash_segmenter.c:1236
    #10 0x557a668afbb6 in do_dash /home/functionmain/Desktop/gpac-master-asan/applications/mp4box/mp4box.c:4825
    #11 0x557a668afbb6 in mp4box_main /home/functionmain/Desktop/gpac-master-asan/applications/mp4box/mp4box.c:6239
    #12 0x7f9f425bf082 in __libc_start_main ../csu/libc-start.c:308
    #13 0x557a66887f5d in _start (/home/functionmain/Desktop/gpac-master-asan/bin/gcc/MP4Box+0xa5f5d)

0x629000059200 is located 0 bytes to the right of 16384-byte region [0x629000055200,0x629000059200)
allocated by thread T0 here:
    #0 0x7f9f485bb808 in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cc:144
    #1 0x7f9f454e4eda in mpeg2ps_stream_create media_tools/mpeg2_ps.c:392
    #2 0x7f9f454e4eda in add_stream media_tools/mpeg2_ps.c:1116
    #3 0x7f9f454ec886 in mpeg2ps_scan_file media_tools/mpeg2_ps.c:1293
    #4 0x7f9f454ec886 in mpeg2ps_init media_tools/mpeg2_ps.c:1625
    #5 0x7f9f45b2150c in m2psdmx_process filters/dmx_mpegps.c:327
    #6 0x7f9f459ae33e in gf_filter_process_task filter_core/filter.c:2971
    #7 0x7f9f4596d66a in gf_fs_thread_proc filter_core/filter_session.c:1962
    #8 0x7f9f4597afd6 in gf_fs_run filter_core/filter_session.c:2261
    #9 0x7f9f45310a9d in gf_dasher_process media_tools/dash_segmenter.c:1236
    #10 0x557a668afbb6 in do_dash /home/functionmain/Desktop/gpac-master-asan/applications/mp4box/mp4box.c:4825
    #11 0x557a668afbb6 in mp4box_main /home/functionmain/Desktop/gpac-master-asan/applications/mp4box/mp4box.c:6239
    #12 0x7f9f425bf082 in __libc_start_main ../csu/libc-start.c:308

SUMMARY: AddressSanitizer: heap-buffer-overflow media_tools/mpeg2_ps.c:273 in MPEG12_ParseSeqHdr
Shadow bytes around the buggy address:
  0x0c52800031f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c5280003200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c5280003210: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c5280003220: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c5280003230: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x0c5280003240:[fa]fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c5280003250: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c5280003260: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c5280003270: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c5280003280: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c5280003290: 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
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  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
  Shadow gap:              cc
==3400280==ABORTING

Impact

This is capable of causing crashes.

References

poc_crash000086 is here