CVE-2021-44892 : Vulnerability Insights and Analysis
Learn about the CVE-2021-44892 Remote Code Execution (RCE) vulnerability in ThinkPHP 3.x.x that allows unauthorized users to gain server control, its impact, and mitigation steps.
A Remote Code Execution (RCE) vulnerability in ThinkPHP 3.x.x allows a malicious user to gain server control privileges.
Understanding CVE-2021-44892
What is CVE-2021-44892?
A Remote Code Execution (RCE) vulnerability exists in ThinkPHP 3.x.x via value[_filename] in index.php, allowing unauthorized users to achieve server control privileges.
The Impact of CVE-2021-44892
Exploitation of this vulnerability can lead to unauthorized access and potential server compromise.
Technical Details of CVE-2021-44892
Vulnerability Description
The vulnerability allows attackers to execute malicious code on the server through the value[_filename] parameter in index.php.
Affected Systems and Versions
- ThinkPHP 3.x.x
Exploitation Mechanism
- Malicious users exploit the value[_filename] parameter in index.php to execute unauthorized code.
Mitigation and Prevention
Immediate Steps to Take
- Implement server-side input validation to mitigate potential code execution attacks.
- Regularly monitor and audit server logs for any suspicious activities.
Long-Term Security Practices
- Keep the ThinkPHP framework updated to ensure the latest security patches are applied.
- Consider implementing a Web Application Firewall (WAF) to protect against code injection attacks.
Patching and Updates
- Apply patches and updates provided by ThinkPHP to address this vulnerability.