CVE-2021-4406

Authenticated Remote COmmand Execution as root in OSNEXUS QuantaStor version 6.0.0.355 and others

Published Jul 10, 2023 CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed
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.

Remediation

Vendor Solution

Upgrade to the latest version of OSNEXUS QuantaStor and hope it is fixed

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2021-34233 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.
History
Type Values Removed Values Added
References
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
DIVD
Published
Updated
Sep 24, 2025, 3:46 PM
Reserved
Jul 5, 2023, 3:24 PM
Status
Modified
Published
Jul 10, 2023, 4:15 PM
Modified
Jun 17, 2026, 4:19 AM