Remote command execution in Chamilo LMS

1) OS Command Injection

EUVDB-ID: #VU81099

Risk: High

CVSSv3.1: 9.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C]

CVE-ID: CVE-2023-34960

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation within SOAP API endpoint when processing PPT files in PPT2LP converter (wsConvertPpt component). A remote unauthenticated attacker can pass specially crafted filename to the application and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Chamilo LMS: 1.11.0 - 1.11.18

External links

http://support.chamilo.org/projects/1/wiki/Security_issues#Issue-112-2023-04-20-Critical-impact-High-risk-Remote-Code-Execution
http://packetstormsecurity.com/files/174314/Chamilo-1.11.18-Command-Injection.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.