CVE-2023-4220: Chamilo LMS Unauthenticated Big Upload File Remote Code Execution
Unrestricted file upload in big file upload functionality in /main/inc/lib/javascript/bigupload/inc/bigUpload.php in Chamilo LMS <= v1.11.24 allows unauthenticated attackers to perform stored cross-site scripting attacks and obtain remote code execution via uploading of web shell.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is CVE-2023-4220?
CVE-2023-4220 is a vulnerability in the Chamilo LMS (Learning Management System) that allows unauthenticated attackers to perform stored cross-site scripting attacks and obtain remote code execution through unrestricted file upload.
How does CVE-2023-4220 impact Chamilo LMS?
CVE-2023-4220 has a high severity rating (8.1) and can potentially allow unauthenticated users to gain cross-site scripting (XSS) and remote code execution (RCE) capabilities on the affected Chamilo LMS <= v1.11.24.
What is the affected version of Chamilo LMS for CVE-2023-4220?
Chamilo LMS versions up to and including v1.11.24 are affected by CVE-2023-4220.
How can unauthenticated attackers exploit CVE-2023-4220?
Unauthenticated attackers can exploit CVE-2023-4220 by uploading a web shell through the unrestricted file upload functionality in `/main/inc/lib/javascript/bigupload/inc/bigUpload.php` and then using it to execute arbitrary remote code.
Is there a fix available for CVE-2023-4220?
Yes, a fix for CVE-2023-4220 is available in the Chamilo LMS repository at https://github.com/chamilo/chamilo-lms/commit/3b487a55076fb06f96809b790a35dcdd42f8ec49.