Overview
This report delves into the CVE-2025-3600 vulnerability, an unsafe reflection issue discovered in Progress® Telerik® UI for AJAX. Affecting versions from 2011.2.712 to 2025.1.218, the vulnerability has the potential to crash the hosting process and cause a denial of service. Due to the widespread use of Telerik® UI for AJAX, this vulnerability could have significant impacts if not promptly addressed.
Vulnerability Summary
CVE ID: CVE-2025-3600
Severity: High (7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Hosting process crash and potential denial of service, with further potential for system compromise or data leakage
Affected Products
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Product | Affected Versions
Progress® Telerik® UI for AJAX | 2011.2.712 to 2025.1.218
How the Exploit Works
The exploit works by leveraging an unsafe reflection vulnerability within the Telerik® UI for AJAX. An attacker could craft a malicious payload that, when processed by the vulnerable application, causes an unhandled exception. This exception could lead to a crash of the hosting process, resulting in a denial of service.
Conceptual Example Code
Here is a conceptual example of how the vulnerability could be exploited:
POST /vulnerable/endpoint HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "malicious_payload": "{...malicious code...}" }
This HTTP request sends a crafted JSON object with a malicious payload to a vulnerable endpoint. The payload then triggers the unhandled exception, crashing the hosting process.
Mitigation
Users are strongly advised to apply the vendor-supplied patch for this issue. If a patch is not immediately available, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used as a temporary mitigation measure. Regularly updating and patching software, as well as monitoring network traffic for anomalies, can also help prevent successful exploitation of this vulnerability.

