Content Security Policy (CSP) Inheritance Issue in Firefox < 55

Content Security Policy (CSP) Inheritance Issue in Firefox < 55

CVE-2017-7788 · HIGH Severity

AV:N/AC:L/AU:N/C:P/I:P/A:P

When an "iframe" has a "sandbox" attribute and its content is specified using "srcdoc", that content does not inherit the containing page's Content Security Policy (CSP) as it should unless the sandbox attribute included "allow-same-origin". This vulnerability affects Firefox < 55.

Learn more about our Web Application Penetration Testing UK.