Advisory Details

June 9th, 2020

Microsoft Windows Media Player mpg2splt Integer Underflow Remote Code Execution Vulnerability

ZDI-20-697
ZDI-CAN-10681

CVE ID CVE-2020-1239
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 Media Player
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft Windows Media Player. 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 mpg2splt.ax module. The issue results from the lack of proper validation of user-supplied data, which can result in an integer underflow before reading from memory. 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://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1239
DISCLOSURE TIMELINE
  • 2020-03-05 - Vulnerability reported to vendor
  • 2020-06-09 - Coordinated public release of advisory
CREDIT Hossein Lotfi of Trend Micro Zero Day Initiative
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