CVE-2023-21716

Microsoft Word Remote Code Execution Vulnerability

Recent assessments:

cbeek-r7 at March 06, 2023 8:12am UTC reported:

A vulnerability in Microsoft’s Word wwlib allows attackers to get LCE with the privileges of the victim opens a malicious
RTF document. An attacker would be able to deliver this payload in several ways including as an attachment in spear-phishing attacks.

Affected Versions

This vulnerability affects at least the following versions of Microsoft Office:

• Microsoft Office 365 (Insider Preview – 2211 Build 15831.20122 CTR)

• Microsoft Office 2016 (Including Insider Slow – 1704 Build 8067.2032 CTR)

• Microsoft Office 2013

• Microsoft Office 2010

• Microsoft Office 2007

Acknowledgement

This issue was discovered, analyzed, and reported by Joshua J. Drake (@jduck).

PoC code from @jduck:

Assessed Attacker Value: 5
Assessed Attacker Value: 5Assessed Attacker Value: 5