FKIE_CVE-2019-9518
Vulnerability from fkie_nvd - Published: 2019-08-13 21:15 - Updated: 2026-06-17 02:43
Severity
Summary
Some HTTP/2 implementations are vulnerable to a flood of empty frames, potentially leading to a denial of service. The attacker sends a stream of frames with an empty payload and without the end-of-stream flag. These frames can be DATA, HEADERS, CONTINUATION and/or PUSH_PROMISE. The peer spends time processing each frame disproportionate to attack bandwidth. This can consume excess CPU.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| apple | swiftnio | * | |
| apple | mac_os_x | * | |
| canonical | ubuntu_linux | * | |
| apache | traffic_server | * | |
| apache | traffic_server | * | |
| apache | traffic_server | * | |
| canonical | ubuntu_linux | 16.04 | |
| canonical | ubuntu_linux | 18.04 | |
| canonical | ubuntu_linux | 19.04 | |
| debian | debian_linux | 9.0 | |
| debian | debian_linux | 10.0 | |
| synology | skynas | - | |
| synology | diskstation_manager | 6.2 | |
| synology | vs960hd_firmware | - | |
| synology | vs960hd | - | |
| fedoraproject | fedora | 29 | |
| fedoraproject | fedora | 30 | |
| opensuse | leap | 15.0 | |
| opensuse | leap | 15.1 | |
| redhat | jboss_core_services | 1.0 | |
| redhat | jboss_enterprise_application_platform | 7.2.0 | |
| redhat | jboss_enterprise_application_platform | 7.3.0 | |
| redhat | openshift_service_mesh | 1.0 | |
| redhat | quay | 3.0.0 | |
| redhat | software_collections | 1.0 | |
| redhat | enterprise_linux | 8.0 | |
| oracle | graalvm | 19.2.0 | |
| mcafee | web_gateway | * | |
| mcafee | web_gateway | * | |
| mcafee | web_gateway | * | |
| nodejs | node.js | * | |
| nodejs | node.js | * | |
| nodejs | node.js | * | |
| nodejs | node.js | * | |
| nodejs | node.js | * |
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"lang": "en",
"value": "Some HTTP/2 implementations are vulnerable to a flood of empty frames, potentially leading to a denial of service. The attacker sends a stream of frames with an empty payload and without the end-of-stream flag. These frames can be DATA, HEADERS, CONTINUATION and/or PUSH_PROMISE. The peer spends time processing each frame disproportionate to attack bandwidth. This can consume excess CPU."
},
{
"lang": "es",
"value": "Algunas implementaciones de HTTP / 2 son vulnerables a una avalancha de tramas vac\u00edas, lo que puede conducir a una denegaci\u00f3n de servicio. El atacante env\u00eda una secuencia de tramas con una carga \u00fatil vac\u00eda y sin el indicador de fin de secuencia. Estos marcos pueden ser DATA, HEADERS, CONTINUATION y / o PUSH_PROMISE. El par pasa tiempo procesando cada cuadro desproporcionado para atacar el ancho de banda. Esto puede consumir un exceso de CPU."
}
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"id": "CVE-2019-9518",
"lastModified": "2026-06-17T02:43:53.733",
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"published": "2019-08-13T21:15:13.003",
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"url": "https://access.redhat.com/errata/RHSA-2019:2955"
},
{
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],
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},
{
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"tags": [
"Third Party Advisory"
],
"url": "https://access.redhat.com/errata/RHSA-2019:4352"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://access.redhat.com/errata/RHSA-2020:0727"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory",
"US Government Resource"
],
"url": "https://kb.cert.org/vuls/id/605641/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "https://kc.mcafee.com/corporate/index?page=content\u0026id=SB10296"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.apache.org/thread.html/091b518265bce56a16af87b77c8cfacda902a02079e866f9fdf13b61%40%3Cusers.trafficserver.apache.org%3E"
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{
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},
{
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"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4ZQGHE3WTYLYAYJEIDJVF2FIGQTAYPMC/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CMNFX5MNYRWWIMO4BTKYQCGUDMHO3AXP/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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"url": "https://seclists.org/bugtraq/2019/Aug/24"
},
{
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"tags": [
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"url": "https://seclists.org/bugtraq/2019/Sep/18"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "https://security.netapp.com/advisory/ntap-20190823-0005/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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"url": "https://support.f5.com/csp/article/K46011592"
},
{
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"url": "https://support.f5.com/csp/article/K46011592?utm_source=f5support\u0026amp%3Butm_medium=RSS"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "https://www.debian.org/security/2019/dsa-4520"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "https://www.synology.com/security/advisory/Synology_SA_19_33"
}
],
"sourceIdentifier": "cret@cert.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-400"
}
],
"source": "cret@cert.org",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-770"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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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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