CVE-2021-42669

Public Exploit

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 44.22% Top 5%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory sourcecodester.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.sourcecodester.com/php/13115/engineers-online-portal-php.html product third party advisory
https://github.com/TheHackingRabbi/CVE-2021-42669 third party advisory exploit
https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-42671 third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-42669?
CVE-2021-42669 has been scored as a critical severity vulnerability.
How to fix CVE-2021-42669?
To fix CVE-2021-42669, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-42669 being actively exploited in the wild?
It is possible that CVE-2021-42669 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~44% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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