CVE-2021-40906: XSS
First published: Fri Mar 25 2022(Updated: )
CheckMK Raw Edition software (versions 1.5.0 to 1.6.0) does not sanitise the input of a web service parameter that is in an unauthenticated zone. This Reflected XSS allows an attacker to open a backdoor on the device with HTML content and interpreted by the browser (such as JavaScript or other client-side scripts) or to steal the session cookies of a user who has previously authenticated via a man in the middle. Successful exploitation requires access to the web service resource without authentication.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Checkmk NagVis | >=1.5.0<1.6.0 | |
| Checkmk NagVis | =1.6.0 | |
| Checkmk NagVis | =1.6.0-b1 | |
| Checkmk NagVis | =1.6.0-b10 | |
| Checkmk NagVis | =1.6.0-b12 | |
| Checkmk NagVis | =1.6.0-b3 | |
| Checkmk NagVis | =1.6.0-b4 | |
| Checkmk NagVis | =1.6.0-b5 | |
| Checkmk NagVis | =1.6.0-b9 | |
| Checkmk NagVis | =1.6.0-p1 | |
| Checkmk NagVis | =1.6.0-p10 | |
| Checkmk NagVis | =1.6.0-p11 | |
| Checkmk NagVis | =1.6.0-p12 | |
| Checkmk NagVis | =1.6.0-p13 | |
| Checkmk NagVis | =1.6.0-p14 | |
| Checkmk NagVis | =1.6.0-p15 | |
| Checkmk NagVis | =1.6.0-p16 | |
| Checkmk NagVis | =1.6.0-p19 | |
| Checkmk NagVis | =1.6.0-p2 | |
| Checkmk NagVis | =1.6.0-p20 | |
| Checkmk NagVis | =1.6.0-p21 | |
| Checkmk NagVis | =1.6.0-p22 | |
| Checkmk NagVis | =1.6.0-p23 | |
| Checkmk NagVis | =1.6.0-p24 | |
| Checkmk NagVis | =1.6.0-p25 | |
| Checkmk NagVis | =1.6.0-p3 | |
| Checkmk NagVis | =1.6.0-p4 | |
| Checkmk NagVis | =1.6.0-p5 | |
| Checkmk NagVis | =1.6.0-p6 | |
| Checkmk NagVis | =1.6.0-p7 | |
| Checkmk NagVis | =1.6.0-p8 | |
| Checkmk NagVis | =1.6.0-p9 | |
| Checkmk NagVis | =1.6.0b10 | |
| Checkmk NagVis | =1.6.0b11 | |
| Checkmk NagVis | =1.6.0p10 | |
| Checkmk NagVis | =1.6.0p17 | |
| Checkmk NagVis | =1.6.0p18 | |
| Checkmk NagVis | >=1.5.0<1.6.0 | |
| Checkmk NagVis | =1.6.0 | |
| Checkmk NagVis | =1.6.0-b1 | |
| Checkmk NagVis | =1.6.0-b10 | |
| Checkmk NagVis | =1.6.0-b12 | |
| Checkmk NagVis | =1.6.0-b3 | |
| Checkmk NagVis | =1.6.0-b4 | |
| Checkmk NagVis | =1.6.0-b5 | |
| Checkmk NagVis | =1.6.0-b9 | |
| Checkmk NagVis | =1.6.0-p1 | |
| Checkmk NagVis | =1.6.0-p10 | |
| Checkmk NagVis | =1.6.0-p11 | |
| Checkmk NagVis | =1.6.0-p12 | |
| Checkmk NagVis | =1.6.0-p13 | |
| Checkmk NagVis | =1.6.0-p14 | |
| Checkmk NagVis | =1.6.0-p15 | |
| Checkmk NagVis | =1.6.0-p16 | |
| Checkmk NagVis | =1.6.0-p19 | |
| Checkmk NagVis | =1.6.0-p2 | |
| Checkmk NagVis | =1.6.0-p20 | |
| Checkmk NagVis | =1.6.0-p21 | |
| Checkmk NagVis | =1.6.0-p22 | |
| Checkmk NagVis | =1.6.0-p23 | |
| Checkmk NagVis | =1.6.0-p24 | |
| Checkmk NagVis | =1.6.0-p25 | |
| Checkmk NagVis | =1.6.0-p3 | |
| Checkmk NagVis | =1.6.0-p4 | |
| Checkmk NagVis | =1.6.0-p5 | |
| Checkmk NagVis | =1.6.0-p6 | |
| Checkmk NagVis | =1.6.0-p7 | |
| Checkmk NagVis | =1.6.0-p8 | |
| Checkmk NagVis | =1.6.0-p9 |
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Frequently Asked Questions
What is CVE-2021-40906?
CVE-2021-40906 refers to a vulnerability in CheckMK Raw Edition software versions 1.5.0 to 1.6.0 that allows for a reflected cross-site scripting (XSS) attack.
What is the severity of CVE-2021-40906?
The severity of CVE-2021-40906 is medium with a CVSS score of 6.1.
How does CVE-2021-40906 affect Tribe29 Checkmk?
CVE-2021-40906 affects Tribe29 Checkmk Raw Edition software versions 1.5.0 to 1.6.0.
How can an attacker exploit CVE-2021-40906?
An attacker can exploit CVE-2021-40906 by injecting malicious HTML content into a web service parameter in an unauthenticated zone, which can be executed by a user's browser and potentially open a backdoor on the device.
Where can I find more information about CVE-2021-40906?
You can find more information about CVE-2021-40906 on the CheckMK website (http://checkmk.com) and the GitHub repository (https://github.com/Edgarloyola/CVE-2021-40906).
- agent/references
- agent/type
- agent/severity
- agent/author
- agent/weakness
- agent/description
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/event
- agent/first-publish-date
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- vendor/tribe29
- canonical/checkmk nagvis
- version/checkmk nagvis/1.5.0
- version/checkmk nagvis/1.6.0
- version/checkmk nagvis/1.6.0-b1
- version/checkmk nagvis/1.6.0-b10
- version/checkmk nagvis/1.6.0-b12
- version/checkmk nagvis/1.6.0-b3
- version/checkmk nagvis/1.6.0-b4
- version/checkmk nagvis/1.6.0-b5
- version/checkmk nagvis/1.6.0-b9
- version/checkmk nagvis/1.6.0-p1
- version/checkmk nagvis/1.6.0-p10
- version/checkmk nagvis/1.6.0-p11
- version/checkmk nagvis/1.6.0-p12
- version/checkmk nagvis/1.6.0-p13
- version/checkmk nagvis/1.6.0-p14
- version/checkmk nagvis/1.6.0-p15
- version/checkmk nagvis/1.6.0-p16
- version/checkmk nagvis/1.6.0-p19
- version/checkmk nagvis/1.6.0-p2
- version/checkmk nagvis/1.6.0-p20
- version/checkmk nagvis/1.6.0-p21
- version/checkmk nagvis/1.6.0-p22
- version/checkmk nagvis/1.6.0-p23
- version/checkmk nagvis/1.6.0-p24
- version/checkmk nagvis/1.6.0-p25
- version/checkmk nagvis/1.6.0-p3
- version/checkmk nagvis/1.6.0-p4
- version/checkmk nagvis/1.6.0-p5
- version/checkmk nagvis/1.6.0-p6
- version/checkmk nagvis/1.6.0-p7
- version/checkmk nagvis/1.6.0-p8
- version/checkmk nagvis/1.6.0-p9
- version/checkmk nagvis/1.6.0b10
- version/checkmk nagvis/1.6.0b11
- version/checkmk nagvis/1.6.0p10
- version/checkmk nagvis/1.6.0p17
- version/checkmk nagvis/1.6.0p18
- vendor/checkmk