CVE-2023-4220

Public Exploit
Chamilo LMS Unauthenticated Big Upload File Remote Code Execution

Description

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.

Categories

8.1
CVSS
Severity: High
CVSS 3.1 •
EPSS 93.03% Top 5%
Vendor Advisory chamilo.org
Affected: Chamilo Chamilo
Published at:
Updated at:

References

Link Tags
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 vendor advisory issue tracking
https://starlabs.sg/advisories/23/23-4220 third party advisory exploit
https://github.com/chamilo/chamilo-lms/commit/3b487a55076fb06f96809b790a35dcdd42f8ec49 patch

Frequently Asked Questions

What is the severity of CVE-2023-4220?
CVE-2023-4220 has been scored as a high severity vulnerability.
How to fix CVE-2023-4220?
To fix CVE-2023-4220, 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-2023-4220 being actively exploited in the wild?
It is possible that CVE-2023-4220 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~93% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-4220?
CVE-2023-4220 affects Chamilo Chamilo.
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