CVE-2024-38094: Microsoft SharePoint Server RCE Vulnerability

CVE-2024-38094 Overview

Microsoft SharePoint Remote Code Execution Vulnerability

Critical Impact

This vulnerability allows attackers to remotely execute arbitrary code on affected Microsoft SharePoint servers, potentially compromising sensitive data and functionality.

Affected Products

• Microsoft SharePoint Server - Subscription
• Microsoft SharePoint Server 2016
• Microsoft SharePoint Server 2019

Discovery Timeline

• Not Available - Vulnerability discovered by Not Available
• Not Available - Responsible disclosure to Microsoft
• Not Available - CVE CVE-2024-38094 assigned
• Not Available - Microsoft releases security patch
• 2024-07-09 - CVE CVE-2024-38094 published to NVD
• 2025-10-28 - Last updated in NVD database

Technical Details for CVE-2024-38094

Vulnerability Analysis

CVE-2024-38094 is a remote code execution vulnerability affecting Microsoft SharePoint Server, caused by improper handling of serialized objects. It allows attackers to exploit deserialization flaws, executing arbitrary code remotely with high privileges.

Root Cause

The root cause of this vulnerability is insecure deserialization, leading to the potential execution of untrusted code through carefully crafted serialized inputs.

Attack Vector

The attack vector for CVE-2024-38094 is through network exploits, leveraging insecure serialization processes within the SharePoint server environment.

# Example exploitation code (sanitized)
import requests

url = "http://vulnerablesharepointserver.com"
data = "<payload containing serialized objects>"

response = requests.post(url, data=data)
print(response.status_code)

Detection Methods for CVE-2024-38094

Indicators of Compromise

• Unusual outbound network traffic from SharePoint servers
• Suspicious process launches on SharePoint servers
• Unexpected modifications to SharePoint server files

Detection Strategies

Utilize behavior-based detection systems to identify abnormal application behavior and process execution patterns indicative of deserialization attacks. Employ network monitoring to detect and alert on unusual requests made to SharePoint endpoints.

Monitoring Recommendations

Implement continuous monitoring of SharePoint server logs for any irregular access patterns and system commands executed. Integrate security solutions that provide behavior analytics and correlate events for advanced detection capabilities.

How to Mitigate CVE-2024-38094

Immediate Actions Required

• Apply the latest security patches provided by Microsoft
• Restrict network access to SharePoint servers
• Regularly audit server configurations and access controls

Patch Information

Microsoft has released patches addressing this vulnerability. Administrators should refer to the Microsoft Security Advisory for detailed instructions.

Workarounds

Minimize risk by implementing strict input validation, disabling unnecessary features, and ensuring up-to-date antivirus signatures to prevent malicious payloads.

# Configuration example
sudo ufw deny from any to any port 80
sudo ufw deny from any to any port 443