CVE-2023-3545

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.

CVSS v3.1

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

2.44% chance of exploitation in the next 30 days, 83th percentile

Published

2023-11-28

Updated

2024-08-02

Proof-of-concept exploits (1)

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

References

• CVE Record
• NVD entry

Related

• CVE-2023-3534
• CVE-2023-3547
• CVE-2023-3533
• CVE-2023-3551
• CVE-2023-3532
• CVE-2023-3552