SynopsisThe remote Ubuntu host is missing a security-related patch.
DescriptionJason Pang discovered that service workers intercept responses to plugin network requests made through the browser. An attacker could potentially exploit this to bypass same origin restrictions using the Flash plugin. (CVE-2016-1949).
Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
SolutionUpdate the affected firefox package.