// For flags

CVE-2023-3545

Chamilo LMS Htaccess File Upload Security Bypass

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

La sanitización inadecuada en `main/inc/lib/fileUpload.lib.php` en Chamilo LMS en versiones &lt;= 1.11.20 en instalaciones de Windows y Apache permite a atacantes no autenticados eludir las protecciones de seguridad de carga de archivos y obtener la ejecución remota de código mediante la carga de archivo `.htaccess`. Esta vulnerabilidad puede ser aprovechada por atacantes privilegiados o encadenada con vulnerabilidades de escritura de archivos arbitrarios no autenticados, como CVE-2023-3533, para lograr la ejecución remota de código.

*Credits: Ngo Wei Lin (@Creastery) of STAR Labs SG Pte. Ltd. (@starlabs_sg)
CVSS Scores
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-178: Improper Handling of Case Sensitivity
CAPEC
  • CAPEC-650: Upload a Web Shell to a Web Server
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