Project: gpac (gpac/gpac), language: c++
Vulnerability instance: gpac.cve-2023-4681
Sanitizer: address

================= Bug Report (1/1) ==================
## Source: Huntr
## URL: https://huntr.dev/bounties/d67c5619-ab36-41cc-93b7-04828e25f60e
## Description:
Description
NULL Pointer Dereference 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 ./crashes/crash000004

./bin/gcc/MP4Box -dash 1000 ./crashes/crash000007

./bin/gcc/MP4Box -dash 1000 ./crashes/crash000014

./bin/gcc/MP4Box -dash 1000 ./crashes/crash000069
crash000004 is here
crash000007 is here
crash000014 is here
crash000069 is here
Crash000069 Info
information reported by sanitizer
$ ./bin/gcc/MP4Box -dash 1000 ./crash000069
AddressSanitizer:DEADLYSIGNAL
=================================================================
==540488==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x7f07d6f78e85 bp 0x7ffc9161b230 sp 0x7ffc9161a970 T0)
==540488==The signal is caused by a READ memory access.
==540488==Hint: address points to the zero page.
    #0 0x7f07d6f78e84 in __GI__IO_fread /build/glibc-SzIz7B/glibc-2.31/libio/iofread.c:35
    #1 0x7f07dce74435 in __interceptor_fread ../../../../src/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:988
    #2 0x7f07d9e40e80 in file_read_bytes media_tools/mpeg2_ps.c:163
    #3 0x7f07d9e40e80 in read_to_next_pes_header media_tools/mpeg2_ps.c:544
    #4 0x7f07d9e41ca8 in search_for_next_pes_header media_tools/mpeg2_ps.c:681
    #5 0x7f07d9e421d5 in mpeg2ps_stream_read_next_pes_buffer media_tools/mpeg2_ps.c:732
    #6 0x7f07d9e42d48 in mpeg2ps_stream_find_mpeg_video_frame media_tools/mpeg2_ps.c:823
    #7 0x7f07d9e48e17 in mpeg2ps_stream_read_frame media_tools/mpeg2_ps.c:953
    #8 0x7f07d9e48e17 in get_info_for_all_streams media_tools/mpeg2_ps.c:1211
    #9 0x7f07d9e48e17 in mpeg2ps_scan_file media_tools/mpeg2_ps.c:1368
    #10 0x7f07d9e48e17 in mpeg2ps_init media_tools/mpeg2_ps.c:1625
    #11 0x7f07da47c50c in m2psdmx_process filters/dmx_mpegps.c:327
    #12 0x7f07da30933e in gf_filter_process_task filter_core/filter.c:2971
    #13 0x7f07da2c866a in gf_fs_thread_proc filter_core/filter_session.c:1962
    #14 0x7f07da2d5fd6 in gf_fs_run filter_core/filter_session.c:2261
    #15 0x7f07d9c6ba9d in gf_dasher_process media_tools/dash_segmenter.c:1236
    #16 0x562cd9a11bb6 in do_dash /home/functionmain/desktop/gpac-master-asan/applications/mp4box/mp4box.c:4825
    #17 0x562cd9a11bb6 in mp4box_main /home/functionmain/desktop/gpac-master-asan/applications/mp4box/mp4box.c:6239
    #18 0x7f07d6f1a082 in __libc_start_main ../csu/libc-start.c:308
    #19 0x562cd99e9f5d in _start (/home/functionmain/desktop/gpac-master-asan/bin/gcc/MP4Box+0xa5f5d)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /build/glibc-SzIz7B/glibc-2.31/libio/iofread.c:35 in __GI__IO_fread
==540488==ABORTING
Crash000004 Info
information reported by sanitizer
./bin/gcc/MP4Box -dash 1000 ./crash000004
media_tools/avilib.c:559:2: runtime error: null pointer passed as argument 1, which is declared to never be null
Crash000007 Info
information reported by sanitizer
./bin/gcc/MP4Box -dash 1000 ./crash000007
[Dasher] No template assigned, using $File$_dash$FS$$Number$
[Dasher] No bitrate property assigned to PID crash000007, computing from bitstream
[Dasher] No bitrate property assigned to PID crash000007, computing from bitstream
[RFC6381] Cannot find M4V config, using default mp4v.20
[Dasher] No bitrate property assigned to PID crash000007, computing from bitstream
[Dasher] PID crash000007 config changed during active period, forcing period switch
filters/dasher.c:8390:27: runtime error: member access within null pointer of type 'struct GF_DashStream'
Crash000014 Info
information reported by sanitizer
./bin/gcc/MP4Box -dash 1000 ./crash000014
[Dasher] No template assigned, using $File$_dash$FS$$Number$
Unknown CICP mapping for channel config 4/0.0
[RFC6381] Cannot find MPEG-H Audio Config or audio PL, defaulting to profile 0x01
[MP4Mux] No timescale specified, guessing from media: 0
[Dasher] Representation not initialized, dropping non-SAP1/2 packet CTS 0/0
[Dasher] Representation not initialized, dropping non-SAP1/2 packet CTS 1024/0
[Dasher] Representation not initialized, dropping non-SAP1/2 packet CTS 2048/0
Unsupported cicp audio layout value 58
[Dasher] PID audio config changed during active period, forcing period switch
filters/dasher.c:8417:9: runtime error: member access within null pointer of type 'struct GF_DashStream'
Impact
This is capable of causing crashes.
References
crash000004 is here
crash000007 is here
crash000014 is here
crash000069 is here
Impact
This is capable of causing crashes.

Relevant Links:
https://github.com/gpac/gpac
https://gitee.com/FUNctionMain/mypoc/raw/master/poc3/crash000004
https://gitee.com/FUNctionMain/mypoc/raw/master/poc3/crash000007
https://gitee.com/FUNctionMain/mypoc/raw/master/poc3/crash000014
https://gitee.com/FUNctionMain/mypoc/raw/master/poc3/crash000069
https://gitee.com/FUNctionMain/mypoc/raw/master/poc3/crash000004
https://gitee.com/FUNctionMain/mypoc/raw/master/poc3/crash000007
https://gitee.com/FUNctionMain/mypoc/raw/master/poc3/crash000014
https://gitee.com/FUNctionMain/mypoc/raw/master/poc3/crash000069
https://gitee.com/FUNctionMain/mypoc/raw/master/poc3/crash000004
https://gitee.com/FUNctionMain/mypoc/raw/master/poc3/crash000069
https://gitee.com/FUNctionMain/mypoc/raw/master/poc3/crash000014
https://gitee.com/FUNctionMain/mypoc/raw/master/poc3/crash000007

Build script:
#!/bin/bash -eu
# Minimized build script with only core build commands
set -eu
./configure --static-build --extra-cflags="${CFLAGS}" --extra-ldflags="${CFLAGS}"
make -j$(nproc)

Dockerfile:
FROM hwiwonlee/secb.base:latest
RUN apt-get update && apt-get install -y build-essential pkg-config libz-dev
RUN git clone https://github.com/gpac/gpac gpac
RUN git -C gpac checkout b1042c3eefca87c4bc32afb404ed6518d693e5be
WORKDIR $SRC/gpac
COPY build.sh $SRC/

Additional files: