CVE-2021-42669

high-risk
Published 2021-11-05

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.

Do I need to act?

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44.2% chance of exploitation in next 30 days
EPSS score — higher than 56% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Engineers Online Portal Project

References (6)

Exploit https://github.com/TheHackingRabbi/CVE-2021-42669
Exploit https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-42671
Product https://www.sourcecodester.com/php/13115/engineers-online-portal-php.html
Exploit https://github.com/TheHackingRabbi/CVE-2021-42669
Exploit https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-42671
Product https://www.sourcecodester.com/php/13115/engineers-online-portal-php.html
54
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 17/34 · Moderate
Exposure 5/34 · Minimal