CVE-2021-27215 (GCVE-0-2021-27215)
Vulnerability from cvelistv5 – Published: 2021-03-03 15:45 – Updated: 2024-08-03 20:40
VLAI
EPSS
VEX
Summary
An issue was discovered in genua genugate before 9.0 Z p19, 9.1.x through 9.6.x before 9.6 p7, and 10.x before 10.1 p4. The Web Interfaces (Admin, Userweb, Sidechannel) can use different methods to perform the authentication of a user. A specific authentication method during login does not check the provided data (when a certain manipulation occurs) and returns OK for any authentication request. This allows an attacker to login to the admin panel as a user of his choice, e.g., the root user (with highest privileges) or even a non-existing user.
Severity
9.8 (Critical)
CWE
- n/a
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.genua.de/en/it-security-solutions/hig… | x_refsource_MISC |
| https://kunde.genua.de/en/overview/genugate.html | x_refsource_MISC |
| https://sec-consult.com/vulnerability-lab/advisor… | x_refsource_MISC |
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"criteria": "cpe:2.3:a:genua:genuagate:9.0:p5:*:*:*:*:*:*",
"matchCriteriaId": "24488A8B-9C74-4DD9-A8D4-D24B7F6334AB",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:genua:genuagate:9.0:p6:*:*:*:*:*:*",
"matchCriteriaId": "D538E9D4-479E-4A83-9CB6-2572237AD246",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:genua:genuagate:9.0:p7:*:*:*:*:*:*",
"matchCriteriaId": "76B327F2-4220-4336-A002-E5902A409D18",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:genua:genuagate:9.0:p8:*:*:*:*:*:*",
"matchCriteriaId": "73D9F4A7-650A-4A41-86DB-637C179A5627",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:genua:genuagate:9.0:p9:*:*:*:*:*:*",
"matchCriteriaId": "983A322D-6D93-457C-BB5A-404DE6BF64EC",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:genua:genuagate:9.6.0:-:*:*:*:*:*:*",
"matchCriteriaId": "12CD70FD-C653-46C5-8CDD-5CE31780A973",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:genua:genuagate:9.6.0:p1:*:*:*:*:*:*",
"matchCriteriaId": "52E3918B-01B4-45C0-BBC3-233D02E7BB0D",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:genua:genuagate:9.6.0:p2:*:*:*:*:*:*",
"matchCriteriaId": "36F405B7-D3B1-47DB-BE1F-5116D41324F5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:genua:genuagate:9.6.0:p3:*:*:*:*:*:*",
"matchCriteriaId": "2F2B4650-C51B-4BA5-9A31-0DCC595419C4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:genua:genuagate:9.6.0:p4:*:*:*:*:*:*",
"matchCriteriaId": "7F6F7E68-43F4-442D-8516-A84AF3A7F736",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:genua:genuagate:9.6.0:p5:*:*:*:*:*:*",
"matchCriteriaId": "7AD71A26-EFCB-449A-89F0-947AA291EAD7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:genua:genuagate:9.6.0:p6:*:*:*:*:*:*",
"matchCriteriaId": "8616E470-5887-4A2B-B11D-19EA460D5AC0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:genua:genuagate:10.1:-:*:*:*:*:*:*",
"matchCriteriaId": "CAB744C9-4562-4A77-98AD-99A0B24DABD2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:genua:genuagate:10.1:p1:*:*:*:*:*:*",
"matchCriteriaId": "002A422D-959E-491A-BB22-109177256903",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:genua:genuagate:10.1:p2:*:*:*:*:*:*",
"matchCriteriaId": "29B8F70C-C496-45C0-ABCD-85E7F1FA914C",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:genua:genuagate:10.1:p3:*:*:*:*:*:*",
"matchCriteriaId": "3051E329-7A2F-4063-A162-B2646257D365",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "An issue was discovered in genua genugate before 9.0 Z p19, 9.1.x through 9.6.x before 9.6 p7, and 10.x before 10.1 p4. The Web Interfaces (Admin, Userweb, Sidechannel) can use different methods to perform the authentication of a user. A specific authentication method during login does not check the provided data (when a certain manipulation occurs) and returns OK for any authentication request. This allows an attacker to login to the admin panel as a user of his choice, e.g., the root user (with highest privileges) or even a non-existing user."
},
{
"lang": "es",
"value": "Se detect\u00f3 un problema en genua genugate versiones anteriores a 9.0 Z p19, versiones 9.1.x hasta 9.6.x anteriores a 9.6 p7 y versiones 10.x anteriores a 10.1 p4.\u0026#xa0;Las interfaces web (Admin, Userweb, Sidechannel) pueden usar diferentes m\u00e9todos para lleva a cabo la autenticaci\u00f3n de un usuario.\u0026#xa0;Un m\u00e9todo de autenticaci\u00f3n espec\u00edfico durante el inicio de sesi\u00f3n no comprueba los datos proporcionados (cuando ocurre una determinada manipulaci\u00f3n) y devuelve OK para cualquier petici\u00f3n de autenticaci\u00f3n.\u0026#xa0;Esto permite a un atacante iniciar sesi\u00f3n en el panel de administraci\u00f3n como un usuario de su elecci\u00f3n, por ejemplo, el usuario root (con los privilegios m\u00e1s altos) o inclusive un usuario no existente"
}
],
"id": "CVE-2021-27215",
"lastModified": "2024-11-21T05:57:36.757",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 7.5,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 6.4,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2021-03-03T16:15:13.260",
"references": [
{
"source": "cve@mitre.org",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "https://kunde.genua.de/en/overview/genugate.html"
},
{
"source": "cve@mitre.org",
"tags": [
"Exploit",
"Third Party Advisory"
],
"url": "https://sec-consult.com/vulnerability-lab/advisory/authentication-bypass-genua-genugate/"
},
{
"source": "cve@mitre.org",
"tags": [
"Product"
],
"url": "https://www.genua.de/en/it-security-solutions/high-resistance-firewall-genugate"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "https://kunde.genua.de/en/overview/genugate.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit",
"Third Party Advisory"
],
"url": "https://sec-consult.com/vulnerability-lab/advisory/authentication-bypass-genua-genugate/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Product"
],
"url": "https://www.genua.de/en/it-security-solutions/high-resistance-firewall-genugate"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-306"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2026-03-27T14:26:09+00:00",
"cve": "CVE-2021-27215",
"id": "CVE-2021-27215",
"initial_release_date": "2021-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "CVE-2021-27215",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-27215.json",
"version": "3"
}
}
}
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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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