Advisory Details

November 22nd, 2020

Microsoft Windows WebM Video Parsing Uninitialized Pointer Remote Code Execution Vulnerability

ZDI-20-1373
ZDI-CAN-12020

CVE ID CVE-2020-1319
CVSS SCORE 8.8, (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Windows
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft Windows. 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 parsing of WebM videos. Crafted data in a WebM video can trigger access to a pointer prior to initialization. An attacker can leverage this vulnerability to execute code in the context of the current process.

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2020-1319
DISCLOSURE TIMELINE
  • 2020-09-30 - Vulnerability reported to vendor
  • 2020-11-22 - Coordinated public release of advisory
CREDIT Hossein Lotfi of Trend Micro Zero Day Initiative
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