A security issue has been found in firefox < 55.0 and thunderbird < 52.3. When a page’s content security policy (CSP) header contains a sandbox directive, other directives are ignored. This results in the incorrect enforcement of CSP.
A security issue has been found in firefox < 55.0 and thunderbird < 52.3. When a page’s content security policy (CSP) header contains a sandbox directive, other directives are ignored. This results in the incorrect enforcement of CSP.
https://www.mozilla.org/en-US/security/advisories/mfsa2017-18/#CVE-2017-7803 https://bugzilla.mozilla.org/show_bug.cgi?id=1377426