CVE-2021-4406
Authenticated Remote COmmand Execution as root in OSNEXUS QuantaStor version 6.0.0.355 and others
Description
An authenticated attacker is able to create alerts that trigger a stored XSS attack. POC * go to the alert manager * open the ITSM tab * add a webhook with the URL/service token value ' -h && id | tee /tmp/ttttttddddssss #' (whitespaces are tab characters) * click add * click apply * create a test alert * The test alert will run the command “id | tee /tmp/ttttttddddssss” as root. * after the test alert inspect /tmp/ttttttddddssss it'll contain the ids of the root user.
INFO
Published Date :
July 10, 2023, 4:15 p.m.
Last Modified :
Sept. 24, 2025, 2:15 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] |
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-2021-4406.
| URL | Resource |
|---|---|
| https://csirt.divd.nl/CVE-2021-4406 | Third Party Advisory |
| https://csirt.divd.nl/DIVD-2021-00020/ | |
| https://www.osnexus.com/products/software-defined-storage | Product |
| https://csirt.divd.nl/CVE-2021-4406 | Third Party Advisory |
| https://www.divd.nl/DIVD-2021-00020 | |
| https://www.osnexus.com/products/software-defined-storage | Product |
| https://csirt.divd.nl/cves/CVE-2021-4406/ |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-4406 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-2021-4406
weaknesses.
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-4406 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-4406 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 134c704f-9b21-4f2e-91b3-4a467353bcc0
Sep. 24, 2025
Action Type Old Value New Value Added Reference https://csirt.divd.nl/cves/CVE-2021-4406/ -
CVE Modified by [email protected]
Sep. 22, 2025
Action Type Old Value New Value Changed Description An administrator is able to execute commands as root via the alerts management dialog An authenticated attacker is able to create alerts that trigger a stored XSS attack. POC * go to the alert manager * open the ITSM tab * add a webhook with the URL/service token value ' -h && id | tee /tmp/ttttttddddssss #' (whitespaces are tab characters) * click add * click apply * create a test alert * The test alert will run the command “id | tee /tmp/ttttttddddssss” as root. * after the test alert inspect /tmp/ttttttddddssss it'll contain the ids of the root user. -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://csirt.divd.nl/CVE-2021-4406 Added Reference https://www.divd.nl/DIVD-2021-00020 Added Reference https://www.osnexus.com/products/software-defined-storage -
CVE Modified by [email protected]
Oct. 16, 2024
Action Type Old Value New Value Added Reference Dutch Institute for Vulnerability Disclosure https://csirt.divd.nl/DIVD-2021-00020/ [No types assigned] Removed Reference Dutch Institute for Vulnerability Disclosure https://www.divd.nl/DIVD-2021-00020 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Jul. 13, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://csirt.divd.nl/CVE-2021-4406 No Types Assigned https://csirt.divd.nl/CVE-2021-4406 Third Party Advisory Changed Reference Type https://www.divd.nl/DIVD-2021-00020 No Types Assigned https://www.divd.nl/DIVD-2021-00020 Broken Link Changed Reference Type https://www.osnexus.com/products/software-defined-storage No Types Assigned https://www.osnexus.com/products/software-defined-storage Product Added CWE NIST CWE-77 Added CPE Configuration OR *cpe:2.3:a:osnexus:quantastor:*:*:*:*:*:*:*:* versions up to (excluding) 6.0.0.355
Vulnerability Scoring Details
Base CVSS Score: 9.1
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.13 }} -0.00%
score
0.32699
percentile