CVE-2021-42669 Information

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[## CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

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

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8