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

Quick assessment

Affected
Chamilo Chamilo
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Chamilo LMS是Chamilo协会的一套开源的在线学习和协作系统。该系统支持创建教学内容、远程培训和在线答题等。 Chamilo LMS v1.11.20 版本及之前版本存在安全漏洞，该漏洞源于 “main/inc/lib/fileUpload.lib.php”页面存在清理不当。

CVSS 9.8 · Critical EPSS 2.44% · P84
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I. Basic Information for CVE-2023-3545

Vulnerability Information
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Vulnerability Title
Chamilo LMS Htaccess File Upload Security Bypass
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
大小写敏感处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Chamilo LMS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Chamilo LMS是Chamilo协会的一套开源的在线学习和协作系统。该系统支持创建教学内容、远程培训和在线答题等。 Chamilo LMS v1.11.20 版本及之前版本存在安全漏洞，该漏洞源于 “main/inc/lib/fileUpload.lib.php”页面存在清理不当。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Chamilo Chamilo 0 ~ 1.11.20 -

II. Public POCs for CVE-2023-3545

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 11209 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2023-3545

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Patches & Fixes for CVE-2023-3545 (1)

Other References for CVE-2023-3545 (2)

Same Patch Batch · Chamilo · 2023-11-28 · 10 CVEs total

CVE-2023-3533 9.8 CRITICAL Chamilo LMS Unauthenticated Remote Code Execution via Arbitrary File Write
CVE-2023-3368 9.8 CRITICAL Chamilo LMS Unauthenticated Command Injection
CVE-2023-4225 8.8 HIGH Chamilo LMS File Upload Functionality Remote Code Execution
CVE-2023-4226 8.8 HIGH Chamilo LMS File Upload Functionality Remote Code Execution
CVE-2023-4224 8.8 HIGH Chamilo LMS File Upload Functionality Remote Code Execution
CVE-2023-4223 8.8 HIGH Chamilo LMS File Upload Functionality Remote Code Execution
CVE-2023-4220 8.1 HIGH Chamilo LMS Unauthenticated Big Upload File Remote Code Execution
CVE-2023-4222 7.2 HIGH Chamilo LMS Learning Path PPT2LP Command Injection Vulnerability
CVE-2023-4221 7.2 HIGH Chamilo LMS Learning Path PPT2LP Command Injection Vulnerability

IV. Related Vulnerabilities

Same product: Chamilo
Same vendor: Chamilo
Same weakness: CWE-178