CVE-2023-3545

CRITICAL9.8

Chamilo LMS Htaccess File Upload Security Bypass

Published Nov 28, 2023

Modified 1 years ago

Details

Improper sanitisation in main/inc/lib/fileUpload.lib.php in Chamilo LMS <= v1.11.20 on Windows and Apache installations allows unauthenticated attackers to bypass file upload security protections and obtain remote code execution via uploading of .htaccess file. This vulnerability may be exploited by privileged attackers or chained with unauthenticated arbitrary file write vulnerabilities, such as CVE-2023-3533, to achieve remote code execution.

References

FIX

https://github.com/chamilo/chamilo-lms/commit/dc7bfce429fbd843a95a57c184b6992c4d709549

ADVISORY

https://starlabs.sg/advisories/23/23-3545/

ADVISORY

https://support.chamilo.org/projects/chamilo-18/wiki/security_issues#Issue-125-2023-07-13-Critical-impact-Moderate-risk-Htaccess-File-Upload-Security-Bypass-on-Windows-CVE-2023-3545

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2023-3545

CVSS Analysis

CVSS v3.1

9.8