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How the CVE Works
The vulnerability exists in the `app/logic/L_tool.php` file of YiFang CMS versions up to 2.0.5. The flaw is triggered by improper neutralization of special elements used in an SQL command via the `new_url` parameter. An attacker can submit a specially crafted HTTP request containing malicious SQL code within this parameter. Because the application fails to sanitize or validate this user-supplied input before incorporating it into a database query, the injected SQL code is executed by the backend database. This allows an attacker to read, modify, or delete sensitive data within the database, potentially gaining unauthorized access to administrative functions or user information. The attack can be launched remotely without requiring prior authentication, as the vulnerable functionality is accessible over the network. The public availability of an exploit increases the immediate risk of active attacks against unpatched systems.
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Platform: YiFang CMS
Version: up to 2.0.5
Vulnerability: SQL Injection
Severity: Medium
date: 2025-08-24
Prediction: No Patch Expected
What Undercode Say
Example curl request probing for vulnerability
curl -X POST "http://target.site/app/logic/L_tool.php" -d "new_url=' OR '1'='1"
Hypothetical SQL query constructed by vulnerable code
SELECT FROM some_table WHERE url = '{$_POST['new_url']}';
Becomes exploitable:
SELECT FROM some_table WHERE url = '' OR '1'='1';
How Exploit
- Attacker identifies a target running YiFang CMS ≤ v2.0.5.
- Crafts a POST request to `/app/logic/L_tool.php` with a malicious SQL payload in the `new_url` parameter (e.g.,
' UNION SELECT username, password FROM users--).
3. Sends the request to the vulnerable server.
- The application passes the unsanitized payload to the database, executing the attacker’s SQL command.
- Attacker extracts sensitive data (like admin credentials) from the server’s response.
Protection from this CVE
Immediately upgrade YiFang CMS to a version above 2.0.5 if available.
If no patch exists, apply stringent input validation and use prepared statements with parameterized queries for all database interactions involving the `new_url` parameter.
Implement a Web Application Firewall (WAF) to filter and block SQL injection patterns.
Impact
Successful exploitation can lead to full compromise of the underlying database. Attackers can view, steal, alter, or delete all stored data, including user credentials, personal information, and system settings. This can result in a complete loss of data confidentiality and integrity, and may serve as an initial entry point for further server compromise.
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Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
