Advisory Details

November 15th, 2023

Microsoft Office Word FBX File Parsing Memory Corruption Remote Code Execution Vulnerability

ZDI-23-1638
ZDI-CAN-21843

CVE ID CVE-2023-36045
CVSS SCORE 7.8, AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Office Word
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft Office Word. 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 FBX files. The issue results from the lack of proper validation of user-supplied data, which can result in a memory corruption condition. 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/vulnerability/CVE-2023-36045
DISCLOSURE TIMELINE
  • 2023-09-13 - Vulnerability reported to vendor
  • 2023-11-15 - Coordinated public release of advisory
CREDIT Anonymous
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