SEGV in gf_dash_setup_groups /gpac/src/media_tools/dash_client.c:5382:11

[gandalf4a]

Version

$ ./MP4Box -version
MP4Box - GPAC version 2.3-DEV-rev566-g50c2ab06f-master

Platform

$ uname -a
Linux user-GE40-2PC-Dragon-Eyes 6.2.0-33-generic #33~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Thu Sep  7 10:33:52 UTC 2 x86_64 x86_64 x86_64 GNU/Linux

Asan

/home/user/vul/MP4Box_crash/id000073sig11src000947time30252119execs283200ophavocrep2
[32m[DASH] Updated manifest:
[0m[32m        P#1: start 0 - duration 0 - xlink none
[0m[32m[DASH] Manifest after update:
[0m[32m        P#1: start 0 - duration 0 - xlink none
[0m[32m[DASH] Setting up period start 0 duration 0 xlink none ID DID1
[0mAddressSanitizer:DEADLYSIGNAL
=================================================================
==831999==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x55d7af75c8f5 bp 0x7ffc25365a10 sp 0x7ffc253651c0 T0)
==831999==The signal is caused by a READ memory access.
==831999==Hint: address points to the zero page.
    #0 0x55d7af75c8f5 in strcmp (/home/user/fuzzing_gpac/gpac/bin/gcc/MP4Box+0x998f5) (BuildId: 53333ca7bff59dd9a3d1b2821e7c5f3a9aac76b9)
    #1 0x7fc7875519a1 in gf_dash_setup_groups /home/user/fuzzing_gpac/gpac/src/media_tools/dash_client.c:5382:11
    #2 0x7fc7875a0551 in gf_dash_setup_period /home/user/fuzzing_gpac/gpac/src/media_tools/dash_client.c:6263:2
    #3 0x7fc78755886f in dash_setup_period_and_groups /home/user/fuzzing_gpac/gpac/src/media_tools/dash_client.c:7686:7
    #4 0x7fc78755886f in gf_dash_process_internal /home/user/fuzzing_gpac/gpac/src/media_tools/dash_client.c:8018:7
    #5 0x7fc78755886f in gf_dash_process /home/user/fuzzing_gpac/gpac/src/media_tools/dash_client.c:8089:9
    #6 0x7fc787ce2e03 in dashdmx_process /home/user/fuzzing_gpac/gpac/src/filters/dmx_dash.c:3192:6
    #7 0x7fc787bafa33 in gf_filter_process_task /home/user/fuzzing_gpac/gpac/src/filter_core/filter.c:2971:7
    #8 0x7fc787b7d47b in gf_fs_thread_proc /home/user/fuzzing_gpac/gpac/src/filter_core/filter_session.c:2105:3
    #9 0x7fc787b7b5cf in gf_fs_run /home/user/fuzzing_gpac/gpac/src/filter_core/filter_session.c:2405:3
    #10 0x7fc78742ac6a in gf_dasher_process /home/user/fuzzing_gpac/gpac/src/media_tools/dash_segmenter.c:1236:6
    #11 0x55d7af82c6dc in do_dash /home/user/fuzzing_gpac/gpac/applications/mp4box/mp4box.c:4831:15
    #12 0x55d7af81db6e in mp4box_main /home/user/fuzzing_gpac/gpac/applications/mp4box/mp4box.c:6245:7
    #13 0x7fc786429d8f in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16
    #14 0x7fc786429e3f in __libc_start_main csu/../csu/libc-start.c:392:3
    #15 0x55d7af745dd4 in _start (/home/user/fuzzing_gpac/gpac/bin/gcc/MP4Box+0x82dd4) (BuildId: 53333ca7bff59dd9a3d1b2821e7c5f3a9aac76b9)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV (/home/user/fuzzing_gpac/gpac/bin/gcc/MP4Box+0x998f5) (BuildId: 53333ca7bff59dd9a3d1b2821e7c5f3a9aac76b9) in strcmp
==831999==ABORTING

Reproduce

./MP4Box -dash 10000 poc

POC File

https://github.com/gandalf4a/crash_report/blob/main/gpac/MP4Box/segv_998f5

Credit

Gandalf4a