Related Vulnerabilities: CVE-2016-9904  

An attacker could use a JavaScript Map/Set timing attack to determine whether an atom is used by another compartment/zone in specific contexts. This could be used to leak information, such as usernames embedded in JavaScript code, across websites.

Severity High

Remote Yes

Type Information disclosure

Description

An attacker could use a JavaScript Map/Set timing attack to determine whether an atom is used by another compartment/zone in specific contexts. This could be used to leak information, such as usernames embedded in JavaScript code, across websites.

AVG-106 firefox 50.0.2-1 50.1.0-1 Critical Fixed

14 Dec 2016 ASA-201612-15 AVG-106 firefox Critical multiple issues

https://www.mozilla.org/en-US/security/advisories/mfsa2016-94/#CVE-2016-9904