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 93%

What is CVE-2023-4220?

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.

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Deploy the Patch

Affected Version(s)

Chamilo 0 <= 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.

Metasploit exploit module for CVE-2023-4220
Created by Rapid7

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

-Chamilo-CVE-2023-4220-RCE-Exploit
Created by 0x00-null

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

93% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
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

Credit

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