Chamilo LMS vulnerability exposed to stored cross-site scripting and remote code execution

CVE-2023-4220

6.1MEDIUM

Key Information

Vendor
Chamilo
Status
Chamilo
Vendor
CVE Published:
28 November 2023

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 95%

Summary

Unrestricted file upload in big file upload functionality in /main/inc/lib/javascript/bigupload/inc/bigUpload.php in Chamilo LMS <= v1.11.24 allows unauthenticated attackers to perform stored cross-site scripting attacks and obtain remote code execution via uploading of web shell.

Affected Version(s)

Chamilo <= 1.11.24

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

Chamilo-LMS-CVE-2023-4220-Exploit
Created by Ziad-Sakr

CVE-2023-4220-
Created by insomnia-jacob

CVE-2023-4220
Created by MikeyPPPPPPPP

References

https://support.chamilo.org/projects/chamilo-18/wiki/secu...
vendor-advisory
https://starlabs.sg/advisories/23/23-4220
third-party-advisory
https://github.com/chamilo/chamilo-lms/commit/3b487a55076...
patch

EPSS Score

95% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Collectors

NVD DatabaseMitre Database8 Proof of Concept(s)

Credit

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