NULL Pointer Dereference in the "isomedia/track.c" module's "MergeTrack()" function of GPAC v0.5.2 allows attackers to execute arbitrary code or cause a Denial-of-Service (DoS) by uploading a malicious MP4 file.

An issue was discovered in GPAC version 0.5.2 and 0.9.0-development-20191109. There are memory leaks in metxNew in isomedia/boxcodebase.c and abstRead in isomedia/boxcodeadobe.c.

An issue was discovered in GPAC from v0.5.2 to v0.8.0, as demonstrated by MP4Box. It contains a heap-based buffer overflow in gfm2tssectioncomplete in mediatools/mpegts.c that can cause a denial of service (DOS) via a crafted MP4 file.

There is a integer overflow in mediatools/avparsers.c in the gfavcreadppsbsinternal in GPAC 1.0.1. ppsid may be a negative number, so it will not return. However, avc->pps only has 255 unit, so there is an overflow, which results a crash.