(Pwn2Own) Mozilla Firefox Pop-Up Blocker Bypass Vulnerability

April 11th, 2014
ZDI-14-082 ZDI-CAN-2215

CVE ID

CVE-2014-1511

CVSS Score

6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected Vendors

Mozilla

Affected Products

Firefox

Vulnerability Details


This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Mozilla Firefox. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the pop-up blocker. The issue lies in the ability to forward calls to an unloaded window. An attacker can leverage this vulnerability in combination with another vulnerability to silently execute code under the context of the current process.

Additional Details

Mozilla has issued an update to correct this vulnerability. More details can be found at:
http://www.mozilla.org/security/announce/2014/mfsa2014-29.html

Disclosure Timeline

  • 2014-03-12 - Vulnerability reported to vendor
  • 2014-04-11 - Coordinated public release of advisory

Credit

Mariusz Mlynski

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