MP4NameFirstMatches in mp4util.cpp in MP4v2 2.0.0 mishandles substrings of atom names, leading to use of an inappropriate data type for associated atoms. The resulting type confusion can cause out-of-bounds memory access.

A double free exists in the MP4StringProperty class in mp4property.cpp in MP4v2 2.0.0. A dangling pointer is freed again in the destructor once an exception is triggered.

In MP4v2 2.0.0, there is an integer overflow (with resultant memory corruption) when resizing MP4Array for the ftyp atom in mp4array.h.

In MP4v2 2.0.0, there is an integer underflow (with resultant memory corruption) when parsing MP4Atom in mp4atom.cpp.

MP4Atom::factory in mp4atom.cpp in MP4v2 2.0.0 incorrectly uses the MP4ItemAtom data type in a certain case where MP4DataAtom is required, which allows remote attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact via a crafted MP4 file, because access to the data structure has different expectations about layout as a result of this type confusion.

mp4v2 v2.0.0 was discovered to contain a heap buffer overflow via the MP4GetVideoProfileLevel function at /src/mp4.cpp.

mp4v2 v2.0.0 was discovered to contain a heap buffer overflow via the mp4v2::impl::MP4StringProperty::~MP4StringProperty() function at src/mp4property.cpp.