CVE-2019-0199 (GCVE-0-2019-0199)
Vulnerability from cvelistv5 – Published: 2019-04-10 14:21 – Updated: 2024-08-04 17:44
VLAI
EPSS
VEX
Summary
The HTTP/2 implementation in Apache Tomcat 9.0.0.M1 to 9.0.14 and 8.5.0 to 8.5.37 accepted streams with excessive numbers of SETTINGS frames and also permitted clients to keep streams open without reading/writing request/response data. By keeping streams open for requests that utilised the Servlet API's blocking I/O, clients were able to cause server-side threads to block eventually leading to thread exhaustion and a DoS.
Severity
7.5 (High)
CWE
- DoS
Assigner
References
35 references
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| n/a | Apache Tomcat |
Affected:
Apache Tomcat 9.0.0.M1 to 9.0.14, 8.5.0 to 8.5.37
|
Date Public
2019-03-25 00:00
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{
"lang": "es",
"value": "La implementaci\u00f3n HTTP/2 en Apache Tomcat desde 9.0.0.M1 hasta 9.0.14 y desde 8.5.0 hasta 8.5.37 aceptaba flujos con n\u00fameros excesivos de tramas SETTINS y permit\u00eda a los clientes mantener flujos abiertos sin datos de lectura/escritura o solicitud/respuesta. Manteniendo flujos abiertos para peticiones que utilizaban bloqueo I/O en el Servlet API\u00b4s, los clientes eran capaces de hacer que los hilos (threads) del lado del servidor se bloquearan, provocando el agotamiento de los hilos y la denegaci\u00f3n del servicio (DoS)."
}
],
"id": "CVE-2019-0199",
"lastModified": "2024-11-21T04:16:28.177",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 5.0,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV30": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.0"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2019-04-10T15:29:00.390",
"references": [
{
"source": "security@apache.org",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00090.html"
},
{
"source": "security@apache.org",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00013.html"
},
{
"source": "security@apache.org",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00054.html"
},
{
"source": "security@apache.org",
"url": "http://www.securityfocus.com/bid/107674"
},
{
"source": "security@apache.org",
"url": "https://access.redhat.com/errata/RHSA-2019:3929"
},
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},
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},
{
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},
{
"source": "security@apache.org",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NPHQEL5AQ6LZSZD2Y6TYZ4RC3WI7NXJ3/"
},
{
"source": "security@apache.org",
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},
{
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},
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},
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{
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},
{
"source": "security@apache.org",
"url": "https://www.oracle.com/security-alerts/cpujan2020.html"
},
{
"source": "security@apache.org",
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},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
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{
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{
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},
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},
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],
"sourceIdentifier": "security@apache.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-400"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
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}
},
"redhat_vex": {
"aggregate_severity": "Important",
"current_release_date": "2026-08-04T18:24:49+00:00",
"cve": "CVE-2019-0199",
"id": "CVE-2019-0199",
"initial_release_date": "2019-03-25T00:00:00+00:00",
"product_status:fixed": "85",
"product_status:known_affected": "2",
"product_status:known_not_affected": "57",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "tomcat: Apache Tomcat HTTP/2 DoS",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2019/cve-2019-0199.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-08-31T08:32:52Z",
"cve": "CVE-2019-0199",
"id": "CVE-2019-0199",
"initial_release_date": "2023-02-15T04:19:34Z",
"product_status:known_affected": "476",
"product_status:known_not_affected": "155",
"product_status:recommended": "248",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2019-0199",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2019-0199.json",
"version": "40"
}
}
}
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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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