CVE-2023-3545 Chamilo LMS Htaccess File Upload Security Bypass

Q: Is CVE-2023-3545 being exploited?

There is no known exploitation of CVE-2023-3545 in the wild and no public exploit code.

Q: How do I fix CVE-2023-3545?

No fix has been published for CVE-2023-3545 yet. Limit exposure of the affected software until one is available.

Critical 9.8 Published 28 Nov 2023 Updated 2 Aug 2024

Unauthenticated attackers can bypass file upload restrictions on Windows/Apache to upload .htaccess files, achieving remote code execution.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-3545?

CVE-2023-3545 is a critical vulnerability in Chamilo, published on 28 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-178

Which versions are affected by CVE-2023-3545?

It affects 1 product.

Products include Chamilo Chamilo.

How do I fix CVE-2023-3545?

No fix has been published for CVE-2023-3545 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-3545 being exploited?

There is no known exploitation of CVE-2023-3545 in the wild and no public exploit code.

Sources

Also known as GHSA-qrrc-369r-8grr.