CVE-2021-42669

Impact

A file upload vulnerability exists in Sourcecodester Engineers Online Portal in PHP via dashboard_teacher.php, which allows changing the avatar through teacher_avatar.php. Once an avatar gets uploaded it is getting uploaded to the /admin/uploads/ directory, and is accessible by all users. By uploading a php webshell containing "<?php system($_GET["cmd"]); ?>" the attacker can execute commands on the web server with - /admin/uploads/php-webshell?cmd=id.

Affected products

Weakness classification

References

• NVD record
• CVE.org record
• https://github.com/TheHackingRabbi/CVE-2021-42669
• https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-42671
• https://www.sourcecodester.com/php/13115/engineers-online-portal-php.html
• https://github.com/TheHackingRabbi/CVE-2021-42669
• https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-42671
• https://www.sourcecodester.com/php/13115/engineers-online-portal-php.html