Mozilla Firefox is prone to a security-bypass vulnerability.
An attacker can exploit this issue to bypass certain security restrictions and gain access to local system files to disclose sensitive information and perform unauthorized actions; this may aid in launching further attacks.
Note: This issue was previously discussed in BID 63405 (Mozilla Firefox/Thunderbird/SeaMonkey MFSA 2013-93 through -102 Multiple Vulnerabilities), but has been moved to its own record to better document it.
These issue is fixed in:
Firefox ESR 24.1