Overview
Recently, a critical vulnerability has been identified in Azure, Microsoft’s cloud computing service. The vulnerability, CVE-2025-29972, is a Server-Side Request Forgery (SSRF) exploit that could potentially allow an authorized attacker to perform spoofing over a network. Given the severity and potential impact of this vulnerability, it is crucial for all Azure users to take immediate action to mitigate this threat. Ignoring this vulnerability could lead to a total system compromise or data leakage, potentially causing severe damage to your organization’s infrastructure and reputation.
Vulnerability Summary
CVE ID: CVE-2025-29972
Severity: Critical (9.9 CVSS Score)
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Impact: System compromise and potential data leakage
Affected Products
Escape the Surveillance Era
You just read how systems get breached.
Most apps won’t tell you the truth. They’re part of the problem.
Phone numbers. Emails. Profiles. Logs.
It’s all fuel for surveillance.
Ameeba Chat gives you a way out.
- • No phone number
- • No email
- • No personal info
- • Anonymous aliases
- • End-to-end encrypted
Chat without a trace.
Product | Affected Versions
Microsoft Azure | All versions prior to patch release date
How the Exploit Works
The Server-Side Request Forgery (SSRF) vulnerability in Azure allows an attacker to induce the server to make a request back to itself or to other web-based services within the organization’s infrastructure. This is done by manipulating URL paths or by tricking the server into interpreting a URL that leads back to the server itself or to another server that the attacker wishes to target.
In this particular vulnerability, an authorized attacker could exploit the SSRF vulnerability to perform spoofing over a network. This means that the attacker could act as a user or process within the network, potentially bypassing access controls and gaining unauthorized access to sensitive data or systems.
Conceptual Example Code
Below is a conceptual example of how the vulnerability might be exploited. This example uses a malicious HTTP request that is crafted to exploit the SSRF vulnerability:
GET /proxy?URL=http://localhost/admin HTTP/1.1
Host: target.azure.comIn this example, the attacker is using the proxy functionality to make a call to the localhost, potentially accessing restricted areas of the application.
Mitigation Guidance
The most recommended mitigation strategy is to apply the vendor patch as soon as it becomes available. Microsoft Azure is expected to issue a patch that will resolve this issue. Until then, organizations can use a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) as temporary mitigation. Both of these tools can be used to detect and block SSRF attempts, decreasing the likelihood of a successful attack.
Remember, staying up to date with the latest patches and updates is one of the most effective ways to keep your systems secure.