CVE-2021-36563
CheckMK WATO Unsanitized User Input Cross-Site Scripting Vulnerability
Description
The CheckMK management web console (versions 1.5.0 to 2.0.0) does not sanitise user input in various parameters of the WATO module. This 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), the XSS payload will be triggered when the user accesses some specific sections of the application. In the same sense a very dangerous potential way would be when an attacker who has the monitor role (not administrator) manages to get a stored XSS to steal the secretAutomation (for the use of the API in administrator mode) and thus be able to create another administrator user who has high privileges on the CheckMK monitoring web console. Another way is that persistent XSS allows an attacker to modify the displayed content or change the victim's information. Successful exploitation requires access to the web management interface, either with valid credentials or with a hijacked session.
INFO
Published Date :
July 26, 2021, 6:15 p.m.
Last Modified :
Sept. 16, 2021, 1:21 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
2.7
Exploitability Score :
2.3
Public PoC/Exploit Available at Github
CVE-2021-36563 has a 5 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-36563.
| URL | Resource |
|---|---|
| https://checkmk.com/de/werk/12762 | Vendor Advisory |
| https://checkmk.com/de/werk/13148 | Vendor Advisory |
| https://github.com/Edgarloyola/CVE-2021-36563 | Exploit Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
All CVE - PoC in GitHub
poc proofofconcept tester allcve cvegithub cvenew cvepoc cveupdate
None
None
None
Automatic monitor github cve using Github Actions
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-36563 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-36563 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Sep. 16, 2021
Action Type Old Value New Value Changed Reference Type https://checkmk.com/de/werk/13148 No Types Assigned https://checkmk.com/de/werk/13148 Vendor Advisory Changed Reference Type https://github.com/Edgarloyola/CVE-2021-36563 No Types Assigned https://github.com/Edgarloyola/CVE-2021-36563 Exploit, Third Party Advisory -
CVE Modified by [email protected]
Sep. 08, 2021
Action Type Old Value New Value Added Reference https://github.com/Edgarloyola/CVE-2021-36563 [No Types Assigned] Added Reference https://checkmk.com/de/werk/13148 [No Types Assigned] -
Initial Analysis by [email protected]
Aug. 05, 2021
Action Type Old Value New Value Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism Added CVSS V2 NIST (AV:N/AC:M/Au:S/C:N/I:P/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Changed Reference Type https://checkmk.com/de/werk/12762 No Types Assigned https://checkmk.com/de/werk/12762 Vendor Advisory Added CWE NIST CWE-79 Added CPE Configuration OR *cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:* versions from (including) 1.5.0 up to (including) 2.0.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-36563 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-36563
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.07 }} 0.00%
score
0.27306
percentile