CVE-2021-23042 (GCVE-0-2021-23042)
Vulnerability from cvelistv5 – Published: 2021-09-14 14:56 – Updated: 2024-08-03 18:58
VLAI
EPSS
VEX
Summary
On BIG-IP version 16.0.x before 16.0.1.2, 15.1.x before 15.1.3, 14.1.x before 14.1.4, 13.1.x before 13.1.4, and 12.1.x before 12.1.6, when an HTTP profile is configured on a virtual server, undisclosed requests can cause a significant increase in system resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Severity
7.5 (High)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://support.f5.com/csp/article/K93231374 | x_refsource_MISC |
Impacted products
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"descriptions": [
{
"lang": "en",
"value": "On BIG-IP version 16.0.x before 16.0.1.2, 15.1.x before 15.1.3, 14.1.x before 14.1.4, 13.1.x before 13.1.4, and 12.1.x before 12.1.6, when an HTTP profile is configured on a virtual server, undisclosed requests can cause a significant increase in system resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated."
},
{
"lang": "es",
"value": "En BIG-IP versiones 16.0.x anteriores a 16.0.1.2, versiones 15.1.x anteriores a 15.1.3, versiones 14.1.x anteriores a 14.1.4, versiones 13.1.x anteriores a 13.1.4 y versiones 12.1.x anteriores a 12.1.6, cuando se configura un perfil HTTP en un servidor virtual, las peticiones no divulgadas pueden causar un aumento significativo de una utilizaci\u00f3n de recursos del sistema. Nota: no son evaluadas las versiones de software que han alcanzado End of Technical Support (EoTS)"
}
],
"id": "CVE-2021-23042",
"lastModified": "2024-11-21T05:51:12.440",
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{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 4.3,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
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"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "nvd@nist.gov",
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},
"published": "2021-09-14T15:15:07.157",
"references": [
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"source": "f5sirt@f5.com",
"tags": [
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],
"url": "https://support.f5.com/csp/article/K93231374"
},
{
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"tags": [
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"url": "https://support.f5.com/csp/article/K93231374"
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"sourceIdentifier": "f5sirt@f5.com",
"vulnStatus": "Modified",
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"value": "CWE-400"
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"source": "f5sirt@f5.com",
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"versionStartIncluding": "14.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*",
"matchCriteriaId": "247A56A6-5486-49C4-88B1-4251337044AB",
"versionEndExcluding": "15.1.3",
"versionStartIncluding": "15.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*",
"matchCriteriaId": "64E83F71-D91E-425A-B8F1-5E1790F2B30E",
"versionEndExcluding": "16.0.1.2",
"versionStartIncluding": "16.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "73CB0493-DB3E-4128-BF62-298FCB239AAD",
"versionEndExcluding": "12.1.6",
"versionStartIncluding": "12.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "BF3949EF-0D27-4868-B136-996B4D38D9B1",
"versionEndExcluding": "13.1.4",
"versionStartIncluding": "13.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "3DB5F9D2-C452-4469-9626-15FA11960A9C",
"versionEndExcluding": "14.1.4",
"versionStartIncluding": "14.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "9E599573-DAE5-4481-9BA0-7796D7101E67",
"versionEndExcluding": "15.1.3",
"versionStartIncluding": "15.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "00210DD6-894D-4E43-A7B6-D3B6D508E037",
"versionEndExcluding": "16.0.1.2",
"versionStartIncluding": "16.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*",
"matchCriteriaId": "1B42F0C8-58C2-4334-91DE-3734DF0623B1",
"versionEndExcluding": "12.1.6",
"versionStartIncluding": "12.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*",
"matchCriteriaId": "BF6A13AE-9A16-4A69-A793-21CF85220073",
"versionEndExcluding": "13.1.4",
"versionStartIncluding": "13.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*",
"matchCriteriaId": "57388787-F9DF-4930-ACBC-F3D1DAA53190",
"versionEndExcluding": "14.1.4",
"versionStartIncluding": "14.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*",
"matchCriteriaId": "D67E4394-E1CC-4492-95E7-DCDA13049517",
"versionEndExcluding": "15.1.3",
"versionStartIncluding": "15.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*",
"matchCriteriaId": "8CCAFD36-1E86-4DC2-914E-EE32B8ED387D",
"versionEndExcluding": "16.0.1.2",
"versionStartIncluding": "16.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "1494AD32-7506-4739-9946-781A19A149C8",
"versionEndExcluding": "12.1.6",
"versionStartIncluding": "12.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "87294E83-8020-4904-9244-326FAF3A1E92",
"versionEndExcluding": "13.1.4",
"versionStartIncluding": "13.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "0AF0D639-0210-47D0-8680-6E09F0111D5D",
"versionEndExcluding": "14.1.4",
"versionStartIncluding": "14.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "1B6F6F41-B775-4A79-8284-C7BE0DA49DAA",
"versionEndExcluding": "15.1.3",
"versionStartIncluding": "15.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "4F27D8D5-71EA-4FB0-A9A7-410BF1DEF68C",
"versionEndExcluding": "16.0.1.2",
"versionStartIncluding": "16.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "A45B9F9B-3D94-4336-9130-A516863DE24B",
"versionEndExcluding": "12.1.6",
"versionStartIncluding": "12.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "3F241FCC-B063-46F2-B646-FB093AAFF216",
"versionEndExcluding": "13.1.4",
"versionStartIncluding": "13.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "704DF342-2CB5-4791-BF30-294D07B53653",
"versionEndExcluding": "14.1.4",
"versionStartIncluding": "14.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "50D58AEB-BB36-45A9-99D7-DC028F900707",
"versionEndExcluding": "15.1.3",
"versionStartIncluding": "15.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "C0ADA7B2-41F7-4ED7-A56B-594974B76F6D",
"versionEndExcluding": "16.0.1.2",
"versionStartIncluding": "16.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:*",
"matchCriteriaId": "9F88043A-D38C-4A00-AA87-51DD127C13D0",
"versionEndExcluding": "12.1.6",
"versionStartIncluding": "12.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:*",
"matchCriteriaId": "0C0A2074-4C85-40B4-9D53-3E848E6D5DDD",
"versionEndExcluding": "13.1.4",
"versionStartIncluding": "13.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:*",
"matchCriteriaId": "30CAABDE-CA8C-4F0A-B4D1-0633557AD5E1",
"versionEndExcluding": "14.1.4",
"versionStartIncluding": "14.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:*",
"matchCriteriaId": "2F071628-CC1B-4465-933D-7E5302DCC3A2",
"versionEndExcluding": "15.1.3",
"versionStartIncluding": "15.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:*",
"matchCriteriaId": "35A92CE3-5B17-405B-96CB-B93BB5B9E213",
"versionEndExcluding": "16.0.1.2",
"versionStartIncluding": "16.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "On BIG-IP version 16.0.x before 16.0.1.2, 15.1.x before 15.1.3, 14.1.x before 14.1.4, 13.1.x before 13.1.4, and 12.1.x before 12.1.6, when an HTTP profile is configured on a virtual server, undisclosed requests can cause a significant increase in system resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated."
},
{
"lang": "es",
"value": "En BIG-IP versiones 16.0.x anteriores a 16.0.1.2, versiones 15.1.x anteriores a 15.1.3, versiones 14.1.x anteriores a 14.1.4, versiones 13.1.x anteriores a 13.1.4 y versiones 12.1.x anteriores a 12.1.6, cuando se configura un perfil HTTP en un servidor virtual, las peticiones no divulgadas pueden causar un aumento significativo de una utilizaci\u00f3n de recursos del sistema. Nota: no son evaluadas las versiones de software que han alcanzado End of Technical Support (EoTS)"
}
],
"id": "CVE-2021-23042",
"lastModified": "2024-11-21T05:51:12.440",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 4.3,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2021-09-14T15:15:07.157",
"references": [
{
"source": "f5sirt@f5.com",
"tags": [
"Vendor Advisory"
],
"url": "https://support.f5.com/csp/article/K93231374"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://support.f5.com/csp/article/K93231374"
}
],
"sourceIdentifier": "f5sirt@f5.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-400"
}
],
"source": "f5sirt@f5.com",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-400"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2026-03-27T14:47:21+00:00",
"cve": "CVE-2021-23042",
"id": "CVE-2021-23042",
"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-2021-23042",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-23042.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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