CVE-2021-46013 : Security Advisory and Response
Learn about CVE-2021-46013, an unrestricted file upload vulnerability in Sourcecodester Free school management software 1.0 allowing remote code execution. Find out how to mitigate and prevent this security risk.
An unrestricted file upload vulnerability in Sourcecodester Free school management software 1.0 allows remote code execution.
Understanding CVE-2021-46013
What is CVE-2021-46013?
An unrestricted file upload vulnerability in the school management software enables remote code execution on the web server by uploading a malicious php webshell.
The Impact of CVE-2021-46013
This vulnerability allows attackers to execute arbitrary commands on the web server, potentially leading to data theft, system compromise, or further network exploitation.
Technical Details of CVE-2021-46013
Vulnerability Description
The flaw in Sourcecodester Free school management software 1.0 allows an attacker to upload a php webshell that facilitates remote code execution.
Affected Systems and Versions
- Product: Sourcecodester Free school management software 1.0
- Vendor: Sourcecodester
- Versions affected: All
Exploitation Mechanism
Once the malicious php webshell containing "<?php system($_GET["cmd"]); ?>" is uploaded, it is stored in the /uploads/exam_question/ directory, accessible to all users.
Mitigation and Prevention
Immediate Steps to Take
- Disable file uploads in the software configuration.
- Regularly monitor the /uploads/exam_question/ directory for unauthorized files.
Long-Term Security Practices
- Implement input validation for file uploads.
- Conduct security assessments and penetration testing regularly.
Patching and Updates
Apply patches from the vendor to remediate the vulnerability.