Advisory Details

December 19th, 2016

Mozilla Firefox ClearKeyDecryptor Heap Buffer Overflow Remote Code Execution Vulnerability

ZDI-16-673
ZDI-CAN-3766

CVE ID CVE-2016-2837
CVSS SCORE 6.8, (AV:N/AC:M/Au:N/C:P/I:P/A:P)
AFFECTED VENDORS Mozilla
AFFECTED PRODUCTS Firefox
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 24745. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
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 handling of ClearKey encrypted media. The issue lies in the failure to validate the length of encrypted data prior to copying into a heap-based buffer. An attacker can leverage this vulnerability to execute code within the context of the current process.

ADDITIONAL DETAILS Mozilla has issued an update to correct this vulnerability. More details can be found at:
https://www.mozilla.org/en-US/security/advisories/mfsa2016-77/
DISCLOSURE TIMELINE
  • 2016-05-20 - Vulnerability reported to vendor
  • 2016-12-19 - Coordinated public release of advisory
CREDIT Anonymous
BACK TO ADVISORIES