CVEvulnerability
CVE-2021-42669
9.8 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2021-11-05
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 10.0 HIGH — AV:N/AC:L/Au:N/C:C/I:C/A:C
- Weaknesses
- CWE-434
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 "<?php system($_GET["cmd"]); ?>" the attacker can execute commands on the web server with - /admin/uploads/php-webshell?cmd=id.
Affected configurations
• engineers online portal project engineers online portal
Related
Weakness · CWE (1)
- CWE-434 Unrestricted Upload of File with Dangerous Type weakness
References
- https://github.com/TheHackingRabbi/CVE-2021-42669 Exploit, Third Party Advisory
- https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-42671 Exploit, Third Party Advisory
- https://www.sourcecodester.com/php/13115/engineers-online-portal-php.html Product, Third Party Advisory
- https://github.com/TheHackingRabbi/CVE-2021-42669 Exploit, Third Party Advisory
- https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-42671 Exploit, Third Party Advisory
- https://www.sourcecodester.com/php/13115/engineers-online-portal-php.html Product, Third Party Advisory