CVE-2023-24950: Microsoft SharePoint Server Spoofing Vulnerability

Overview

Severity

Medium (CVSS 6.5)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

Category

Spoofing

Exploit Status

Not Exploited

Exploitation Likelihood

More Likely

Patch Tuesday

2023-May

Released

2023-05-09

EPSS Score

31.12% (percentile: 96.8%)

FAQ

How could an attacker exploit the vulnerability? In a network-based attack an attacker who has privileges to create a site on a vulnerable SharePoint server could use this vulnerability to cause the server to leak its NTLM hash.

Affected Products (3)

Microsoft Office

• Microsoft SharePoint Enterprise Server 2016
• Microsoft SharePoint Server 2019
• Microsoft SharePoint Server Subscription Edition

Security Updates (3)

• 5002397
• 5002389
• 5002390

Acknowledgments

<a href="https://www.twitter.com/chudypb">Piotr Bazydlo (@chudypb)</a> of <a href="https://www.zerodayinitiative.com/">Trend Micro Zero Day Initiative</a>

Revision History

• 2023-05-09: Information published.