Advisory Details

November 21st, 2022

Microsoft Excel FBX File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability

ZDI-22-1598
ZDI-CAN-18382

CVE ID CVE-2022-41107
CVSS SCORE 3.3, (AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N)
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Excel
VULNERABILITY DETAILS

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Microsoft Excel. 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. Crafted data in a FBX file can trigger a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary 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-2022-41107
DISCLOSURE TIMELINE
  • 2022-08-23 - Vulnerability reported to vendor
  • 2022-11-21 - Coordinated public release of advisory
CREDIT Mat Powell of Trend Micro Zero Day Initiative
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