SB2023041195 - SSRF in Microsoft SharePoint Server

Description

This security bulletin contains information about 1 security vulnerability.

1) Server-Side Request Forgery (SSRF) (CVE-ID: CVE-2023-28288)

The disclosed vulnerability allows a remote user to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input within the WSSXmlUrlResolver class. A remote user can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-28288
• https://www.zerodayinitiative.com/advisories/ZDI-23-382/