Advisory Details

October 14th, 2022

Microsoft Word DOCX File Parsing Use-After-Free Remote Code Execution Vulnerability

ZDI-22-1411
ZDI-CAN-17647

CVE ID CVE-2022-38048
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 Word
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft 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 DOCX files. Crafted data in a DOCX file can cause a pointer to be reused after it has been freed. 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-2022-38048
DISCLOSURE TIMELINE
  • 2022-07-11 - Vulnerability reported to vendor
  • 2022-10-14 - Coordinated public release of advisory
CREDIT hades_kito
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