CVE-2023-4220: Chamilo LMS Unauthenticated Big Upload File Remote Code Execution
First published: Tue Nov 28 2023(Updated: )
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.
Credit: info@starlabs.sg
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Chamilo Chamilo Lms | <=1.11.24 |
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Reference Links
- https://github.com/chamilo/chamilo-lms/commit/3b487a55076fb06f96809b790a35dcdd42f8ec49
- https://starlabs.sg/advisories/23/23-4220
- https://support.chamilo.org/projects/chamilo-18/wiki/security_issues#Issue-130-2023-09-04-Critical-impact-High-risk-Unauthenticated-users-may-gain-XSS-and-unauthenticated-RCE-CVE-2023-4220
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.
- collector/nvd-api
- agent/weakness
- agent/event
- agent/title
- agent/references
- agent/severity
- agent/author
- agent/type
- agent/description
- agent/last-modified-date
- agent/remedy
- agent/softwarecombine
- agent/first-publish-date
- agent/tags
- collector/mitre-cve
- source/MITRE
- vendor/chamilo
- canonical/chamilo chamilo lms
- version/chamilo chamilo lms/1.11.24