CVE-2023-3545

Chamilo ≤ 1.11.20

Public PoC

Published

28 November 2023

Modified

21 November 2024

Patch / advisory

View advisory

CVSS Score v3.1 9.8

Click a component to see what it means

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.024 84th percentile

Risk Priority 76 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2023-3545 is a critical-severity Improper Handling of Case Sensitivity (CWE-178) vulnerability in Chamilo Chamilo. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Data Obfuscation (T1001); ranked in the top 16% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2023-44201

Vulnerability Data

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.

CWE(s): CWE-178

Related Threats

MITRE ATT&CK Enterprise Techniques

T1001 Data Obfuscation Command And Control

Adversaries may obfuscate command and control traffic to make it more difficult to detect.

attack.mitre.org →

T1003.001 LSASS Memory Credential Access

Adversaries may attempt to access credential material stored in the process memory of the Local Security Authority Subsystem Service (LSASS).

attack.mitre.org →

T1003.006 DCSync Credential Access

Adversaries may attempt to access credentials and other sensitive information by abusing a Windows Domain Controller's application programming interface (API)(Citation: Microsoft DRSR Dec 2017) (Citation: Microsoft GetNCCChanges) (Citati…

attack.mitre.org →

T1010 Application Window Discovery Discovery

Adversaries may attempt to get a listing of open application windows.

attack.mitre.org →

T1011 Exfiltration Over Other Network Medium Exfiltration

Adversaries may attempt to exfiltrate data over a different network medium than the command and control channel.

attack.mitre.org →

T1016.001 Internet Connection Discovery Discovery

Adversaries may check for Internet connectivity on compromised systems.

attack.mitre.org →

Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-3533Same product: Chamilo Chamilo

CVE-2023-37061Same product: Chamilo Chamilo

CVE-2023-37067Same product: Chamilo Chamilo

CVE-2023-37063Same product: Chamilo Chamilo

CVE-2023-37062Same product: Chamilo Chamilo

CVE-2023-37066Same product: Chamilo Chamilo

CVE-2023-3368Same product: Chamilo Chamilo

CVE-2023-37064Same product: Chamilo Chamilo

CVE-2023-37065Same product: Chamilo Chamilo

CVE-2023-34960Same product: Chamilo Chamilo

Affected Assets

chamilo

≤ 1.11.20

Mitigating Controls

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 partial match

blocks

Secure SDLC practices can catch and prevent case-sensitivity flaws during code review or testing, but fixing one CWE achieves negligible coverage of the broad control.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.19 Installation of software on operational systems partial match

removes

A.8.25 Secure development life cycle partial match

blocks

Secure SDLC practices should include case-sensitivity requirements in design and coding standards.

A.8.26 Application security requirements partial match

blocks

Application security requirements must specify case handling for identifiers and paths.

A.8.27 Secure system architecture and engineering principles partial match

blocks

Architecture principles should enforce canonical, case-aware resource naming.

A.8.28 Secure coding partial match