CVE-2023-3533 Chamilo LMS Unauthenticated Remote Code Execution via Arbitrary File Write

Q: Is CVE-2023-3533 being exploited?

There is no known exploitation of CVE-2023-3533 in the wild and no public exploit code.

Q: How do I fix CVE-2023-3533?

No fix has been published for CVE-2023-3533 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 exploit path traversal in file uploads to write arbitrary files, leading to remote code execution and stored XSS.

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-2023-3533?

CVE-2023-3533 is a critical path traversal 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

Path traversal in file upload functionality in `/main/webservices/additional_webservices.php` in Chamilo LMS <= v1.11.20 allows unauthenticated attackers to perform stored cross-site scripting attacks and obtain remote code execution via arbitrary file write.

Weakness: CWE-22

Which versions are affected by CVE-2023-3533?

It affects 1 product.

Products include Chamilo Chamilo.

How do I fix CVE-2023-3533?

No fix has been published for CVE-2023-3533 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2023-3533 being exploited?

There is no known exploitation of CVE-2023-3533 in the wild and no public exploit code.

Sources

Also known as GHSA-28gg-m25v-q74w.