Vulnerability Details : CVE-2012-3993

Exploit prediction scoring system (EPSS) score for CVE-2012-3993

Metasploit modules for CVE-2012-3993

• Firefox 5.0 - 15.0.1 __exposedProps__ XCS Code Execution

  Disclosure Date : 2013-08-06

  exploit/multi/browser/firefox_proto_crmfrequest

  On versions of Firefox from 5.0 to 15.0.1, the InstallTrigger global, when given invalid input, would throw an exception that did not have an __exposedProps__ property set. By re-setting this property on the exception object's prototype, the chrome-based defineProperty method is made available. With the defineProperty method, functions belonging to window and document can be overridden with a function that gets called from chrome-privileged context. From here, another vulnerability in the crypto.generateCRMFRequest function is used to "peek" into the context's private scope. Since the window does not have a chrome:// URL, the insecure parts of Components.classes are not available, so instead the AddonManager API is invoked to silently install a malicious plugin. Authors: - Mariusz Mlynski - moz_bug_r_a4 - joev <[email protected]>

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CVSS scores for CVE-2012-3993

CWE ids for CVE-2012-3993

• CWE-269 Improper Privilege Management
  The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
  Assigned by: [email protected] (Primary)

References for CVE-2012-3993

Products affected by CVE-2012-3993