An issue was discovered in Bento4 1.5.1.0. There is a SEGV in the function AP4_TfhdAtom::SetDefaultSampleSize at Core/Ap4TfhdAtom.h when called from AP4_Processor::ProcessFragments in Core/Ap4Processor.cpp.

Bento4 1.5.1.0 has a NULL pointer dereference in AP4_DescriptorListWriter::Action in Core/Ap4Descriptor.h, related to AP4_IodsAtom::WriteFields in Core/Ap4IodsAtom.cpp, as demonstrated by mp4encrypt or mp4compact.

Bento4 1.5.1.0 has a NULL pointer dereference in AP4_Descriptor::GetTag in Core/Ap4Descriptor.h, related to AP4_StsdAtom::GetSampleDescription in Core/Ap4StsdAtom.cpp, as demonstrated by mp4info.

Bento4 1.5.1.0 has a NULL pointer dereference in AP4_DescriptorListInspector::Action in Core/Ap4Descriptor.h, related to AP4_IodsAtom::InspectFields in Core/Ap4IodsAtom.cpp, as demonstrated by mp4dump.

Bento4 1.5.1-628 has a NULL pointer dereference in AP4_ByteStream::ReadUI32 in Core/Ap4ByteStream.cpp when called from the AP4_TrunAtom class.

An issue was discovered in Bento4 1.5.1.0. There is a heap-based buffer over-read in the AP4_AvccAtom class at Core/Ap4AvccAtom.cpp.

An issue was discovered in Bento4 1.5.1.0. There is a heap-based buffer over-read in the function AP4_BitReader::SkipBits at Core/Ap4Utils.cpp.

An issue was discovered in Bento4 1.5.1.0. There is a heap-based buffer overflow in the AP4_RtpAtom class at Core/Ap4RtpAtom.cpp.

An issue was discovered in Bento4 1.5.1.0. There is a heap-based buffer over-read in the AP4_Dec3Atom class at Core/Ap4Dec3Atom.cpp.

In Bento4 1.5.1-627, AP4_DataBuffer::SetDataSize does not handle reallocation failures, leading to a memory copy into a NULL pointer. This is different from CVE-2018-20186.