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CVE-2021-42669

Description

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 "" the attacker can execute commands on the web server with - /admin/uploads/php-webshell?cmd=id.

POC

Reference

- https://github.com/TheHackingRabbi/CVE-2021-42669

- https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-42671

Github

- https://github.com/0xDeku/CVE-2021-42669

- https://github.com/2lambda123/CVE-mitre

- https://github.com/ARPSyndicate/cvemon

- https://github.com/NaInSec/CVE-PoC-in-GitHub

- https://github.com/Offensive-Penetration-Security/OPSEC-Hall-of-fame

- https://github.com/SYRTI/POC_to_review

- https://github.com/TheHackingRabbi/CVE-2021-42669

- https://github.com/WhooAmii/POC_to_review

- https://github.com/nomi-sec/PoC-in-GitHub

- https://github.com/nu11secur1ty/CVE-mitre

- https://github.com/soosmile/POC

- https://github.com/trhacknon/Pocingit

- https://github.com/zecool/cve