Advisory Details

May 3rd, 2017

Mozilla Firefox ClearKeyDecryptor Integer Overflow Remote Code Execution Vulnerability

ZDI-17-320
ZDI-CAN-4535

CVE ID CVE-2017-5448
CVSS SCORE 5.1, (AV:N/AC:H/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 results from the lack of proper validation of user-supplied data, which can result in an integer overflow before writing to memory. An attacker can leverage this vulnerability to execute arbitrary code under the context of the plugin-container container 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/mfsa2017-10/
DISCLOSURE TIMELINE
  • 2017-03-01 - Vulnerability reported to vendor
  • 2017-05-03 - Coordinated public release of advisory
CREDIT Anonymous
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