libwebm 'ParseVP9SuperFrameIndex' function heap buffer out-of-bounds read and out-of-bounds write vulnerabilities

libwebm is an open source network media file codec library . A security vulnerability in the 'ParseVP9SuperFrameIndex' function in the common/libwebmutil.cc file in libwebm on 2018-01-30 and prior versions stems from the program's failure to validate the childframelength data of .webm files. A...