ZDI-23-571: Microsoft SharePoint AdRotator Improper Input Validation NTLM Relay Vulnerability

Published May 10, 2023
·
Updated

This vulnerability allows remote attackers to relay NTLM credentials on affected installations of Microsoft SharePoint. Authentication is required to exploit this vulnerability.

Affected Software

1 affected component
Microsoft SharePoint

Event History

May 10, 2023
Advisory Published
05:00 AM
Data Sourced
05:00 AM
Description
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Frequently Asked Questions

1

What is the severity of ZDI-23-571?

The severity of ZDI-23-571 is classified as high due to the potential for unauthorized NTLM credential relay.

2

How do I fix ZDI-23-571?

To fix ZDI-23-571, ensure that the affected Microsoft SharePoint installations are updated to the latest security patches provided by Microsoft.

3

What type of authentication is required to exploit ZDI-23-571?

Exploitation of ZDI-23-571 requires valid authentication credentials to successfully relay NTLM authentication.

4

Who can exploit ZDI-23-571?

Remote attackers with valid authentication can exploit ZDI-23-571 to relay NTLM credentials.

5

Which software is affected by ZDI-23-571?

ZDI-23-571 affects Microsoft SharePoint installations, particularly versions that have not been updated to mitigate this vulnerability.

Contact

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