CVE-2017-14057

In FFmpeg 3.3.3, a DoS in asf_read_marker() due to lack of an EOF (End of
File) check might cause huge CPU and memory consumption. When a crafted ASF
file, which claims a large “name_len” or “count” field in the header but
does not contain sufficient backing data, is provided, the loops over the
name and markers would consume huge CPU and memory resources, since there
is no EOF check inside these loops.