CVE-2017-7803

Source
Severity Medium
Remote Yes
Type Access restriction bypass
Description
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.
Group Package Affected Fixed Severity Status Ticket
AVG-385 thunderbird 52.2.1-1 52.3.0-1 Critical Fixed
AVG-375 firefox 54.0.1-1 55.0-1 Critical Fixed
Date Advisory Group Package Severity Description
10 Aug 2017 ASA-201708-3 AVG-375 firefox Critical multiple issues
23 Aug 2017 ASA-201708-18 AVG-385 thunderbird Critical multiple issues
References
https://www.mozilla.org/en-US/security/advisories/mfsa2017-18/#CVE-2017-7803
https://bugzilla.mozilla.org/show_bug.cgi?id=1377426