CVE-2021-4406 (GCVE-0-2021-4406)
Vulnerability from cvelistv5 – Published: 2023-07-10 06:29 – Updated: 2025-09-24 15:46
VLAI
EPSS
VEX
Title
Authenticated Remote COmmand Execution as root in OSNEXUS QuantaStor version 6.0.0.355 and others
Summary
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.
Severity
9.1 (Critical)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-09-24 13:40 UTC
CWE
- CWE-77 - Improper Neutralization of Special Elements used in a Command ('Command Injection')
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://csirt.divd.nl/DIVD-2021-00020/ | third-party-advisory |
| https://www.osnexus.com/products/software-defined… | product |
| https://csirt.divd.nl/CVE-2021-4406 | third-party-advisoryexploittechnical-description |
| https://www.divd.nl/DIVD-2021-00020 | third-party-advisoryx_transferred |
| https://csirt.divd.nl/cves/CVE-2021-4406/ | exploit |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| OSNEXUS | QuantaStor |
Affected:
0 , ≤ 6.0.0.355
(semver)
|
guessed |
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"value": "Upgrade to the latest version of OSNEXUS QuantaStor and hope it is fixed"
}
],
"value": "Upgrade to the latest version of OSNEXUS QuantaStor and hope it is fixed"
}
],
"source": {
"discovery": "INTERNAL"
},
"title": "Authenticated Remote COmmand Execution as root in OSNEXUS QuantaStor version 6.0.0.355 and others",
"x_generator": {
"engine": "Vulnogram 0.1.0-dev"
}
}
},
"cveMetadata": {
"assignerOrgId": "b87402ff-ae37-4194-9dae-31abdbd6f217",
"assignerShortName": "DIVD",
"cveId": "CVE-2021-4406",
"datePublished": "2023-07-10T06:29:48.698Z",
"dateReserved": "2023-07-05T15:24:56.556Z",
"dateUpdated": "2025-09-24T15:46:35.837Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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