CVE-2023-3533

Chamilo LMS Unauthenticated Remote Code Execution via Arbitrary File Write

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Path Traversal en la funcionalidad de carga de archivos en `/main/webservices/additional_webservices.php` en Chamilo LMS en versiones <= 1.11.20 permite a atacantes no autenticados realizar ataques de Cross Site Scripting Almacenados y obtener ejecución remota de código mediante escritura de archivos arbitrarios.

*Credits: Ngo Wei Lin (@Creastery) of STAR Labs SG Pte. Ltd. (@starlabs_sg)

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2023-07-07 CVE Reserved
2023-11-28 CVE Published
2024-08-02 CVE Updated
2024-08-02 First Exploit
2024-12-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CAPEC

CAPEC-139: Relative Path Traversal

References (3)

URL	Tag	Source

URL	Date	SRC
https://starlabs.sg/advisories/23/23-3533	2024-08-02

URL	Date	SRC
https://github.com/chamilo/chamilo-lms/commit/37be9ce7243a30259047dd4517c48ff8b21d657a	2023-12-05
https://support.chamilo.org/projects/chamilo-18/wiki/security_issues#Issue-124-2023-07-13-Critical-impact-High-risk-Unauthenticated-Arbitrary-File-Write-RCE-CVE-2023-3533	2023-12-05

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Chamilo Search vendor "Chamilo"		Chamilo Search vendor "Chamilo" for product "Chamilo"				<= 1.11.20 Search vendor "Chamilo" for product "Chamilo" and version " <= 1.11.20"		-		Affected