CVE-2021-40904
Publication date 25 March 2022
Last updated 25 August 2025
Ubuntu priority
Description
The web management console of CheckMK Raw Edition (versions 1.5.0 to 1.6.0) allows a misconfiguration of the web-app Dokuwiki (installed by default), which allows embedded php code. As a result, remote code execution is achieved. Successful exploitation requires access to the web management interface, either with valid credentials or with a hijacked session by a user with the role of administrator.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| check-mk | 22.04 LTS jammy | Not in release |
| 20.04 LTS focal | Not in release | |
| 18.04 LTS bionic | Ignored | |
| 16.04 LTS xenial | Ignored | |
| 14.04 LTS trusty | Not in release |
Notes
0xnishit
Remove dokuwiki: https://github.com/tribe29/checkmk/commit/44e4b1a77d3aeee4bc835d3858fcc1bb00b80072 upstream removed the whole module and therefore we won't be applying a fix
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
8.8 · High
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |