Integer overflow in the vmnc decoder in the gstreamer allows remote attackers to cause a denial of service (crash) via large width and height values, which triggers a buffer overflow.Referenceshttp://rhn.redhat.com/errata/RHSA-2017-0021.htmlhttps://bugzilla.gnome.org/show_bug.cgi?id=774533http://www.securityfocus.com/bid/94421http://www.openwall.com/lists/oss-security/2016/11/18/13http://rhn.redhat.com/errata/RHSA-2017-0018.htmlhttps://cgit.freedesktop.org/gstreamer/gst-plugins-bad/commit/gst/vmnc/vmncdec.c?id=4cb1bcf1422bbcd79c0f683edb7ee85e3f7a31fehttp://www.openwall.com/lists/oss-security/2016/11/18/12http://rhn.redhat.com/errata/RHSA-2016-2974.htmlhttps://scarybeastsecurity.blogspot.de/2016/11/0day-poc-risky-design-decisions-in.htmlhttps://security.gentoo.org/glsa/201705-10