The qtdemux_parse_samples function in gst/isomp4/qtdemux.c in gst-plugins-good in GStreamer before 1.10.3 allows remote attackers to cause a denial of service (out-of-bounds heap read) via vectors involving the current stts index. http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-5840