CVE-2023-4221Public exploitNetwork attack vector

Authenticated code execution via unsanitized slide dimensions

Published Nov 28, 2023 · Updated Aug 2, 2024

OS command injection in Chamilo LMS 1.11.24 and earlier allows remote authenticated users to execute commands through Learning Path uploads. OpenofficeDocument::convert_document passes uncast slide_size dimensions into OpenofficePresentation::add_command_parameters, which concatenates them into a shell command executed by exec(). Exploitation requires Learning Path upload permission, the RAPID tool to be enabled, and service_ppt2lp to use localhost; injected commands run with the web application process's privileges.

CVSS severity8.8
High
EPSS probability3.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Chamilo LMS 1.11.24 and earlier allows remote authenticated users to execute commands through Learning Path uploads. OpenofficeDocument::convert_document passes uncast slide_size dimensions into OpenofficePresentation::add_command_parameters, which concatenates them into a shell command executed by exec(). Exploitation requires Learning Path upload permission, the RAPID tool to be enabled, and service_ppt2lp to use localhost; injected commands run with the web application process's privileges.

The record

CVE
CVE-2023-4221
Published
Nov 28, 2023
Updated
Aug 2, 2024
Vendor
Chamilo
Product
Chamilo LMS
Classifications
CWE-78, CAPEC-88, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 28, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.11.24

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Chamilo · Chamilo LMSversion=0 <=1.11.24

Published CVSS scores

7.2STAR Labs SG Pte. Ltd.CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CAPEC-88OS Command Injection
T1059Command and Scripting Interpreter

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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