CVE-2021-41646 Explained : Impact and Mitigation
Learn about CVE-2021-41646, a Remote Code Execution (RCE) flaw in Sourcecodester Online Reviewer System 1.0 allowing malicious PHP file uploads. Find out how to mitigate the risk.
A Remote Code Execution (RCE) vulnerability in Sourcecodester Online Reviewer System 1.0 allows attackers to upload malicious PHP files.
Understanding CVE-2021-41646
What is CVE-2021-41646?
The vulnerability enables the bypassing of image upload filters through malicious PHP file uploads.
The Impact of CVE-2021-41646
Exploitation could lead to unauthorized code execution and potential compromise of the system.
Technical Details of CVE-2021-41646
Vulnerability Description
Attackers can achieve Remote Code Execution by uploading specifically crafted PHP files.
Affected Systems and Versions
- Product: Sourcecodester Online Reviewer System 1.0
- Versions: All
Exploitation Mechanism
Attackers exploit the vulnerability by uploading a PHP file that evades image upload filters.
Mitigation and Prevention
Immediate Steps to Take
- Disable file uploads until a patch is available
- Implement file type validation and input sanitization
Long-Term Security Practices
- Regularly update and patch the system
- Conduct security audits and penetration testing
- Educate users on secure upload practices
Patching and Updates
Apply patches provided by the vendor to fix the vulnerability.