Segmentation fault (ASAN: SEGV on unknown address) in the FixTrackID function of isom_intern.c:133

[gutiniao]

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A crafted input will lead to crash in isom_intern.c at gpac 0.8.0.

Triggered by
./MP4Box -diso POC -out /dev/null

Poc
009-invalid-FixTrackID

The ASAN information is as follows:

./MP4Box -diso 009-invalid-FixTrackID -out /dev/null 
[iso file] Box "avcC" (start 939) has 34 extra bytes
[iso file] Unknown box type 0000 in parent sinf
[iso file] Unknown box type 74E8036B in parent moov
[iso file] Unknown box type tfhd in parent moof
[iso file] Box "UNKN" is larger than container box
[iso file] Box "moof" size 1463 (start 2004) invalid (read 7972)
ASAN:DEADLYSIGNAL
=================================================================
==13653==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000028 (pc 0x564b3322e701 bp 0x60d000000110 sp 0x7fff462fc3f0 T0)
==13653==The signal is caused by a READ memory access.
==13653==Hint: address points to the zero page.
    #0 0x564b3322e700 in FixTrackID isomedia/isom_intern.c:133
    #1 0x564b3322e700 in gf_isom_parse_movie_boxes isomedia/isom_intern.c:372
    #2 0x564b3322fbca in gf_isom_open_file isomedia/isom_intern.c:615
    #3 0x564b32f78852 in mp4boxMain /home/liuz/gpac-master/applications/mp4box/main.c:4767
    #4 0x7fd75e925b96 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
    #5 0x564b32f69b19 in _start (/usr/local/gpac-asan3/bin/MP4Box+0x163b19)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV isomedia/isom_intern.c:133 in FixTrackID
==13653==ABORTING

[aureliendavid]

thanks for the report

this should be fixed by the commit above

reopen if needed