FKIE_CVE-2019-16201
Vulnerability from fkie_nvd - Published: 2019-11-26 18:15 - Updated: 2026-06-17 02:21
Severity
Summary
WEBrick::HTTPAuth::DigestAuth in Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 has a regular expression Denial of Service cause by looping/backtracking. A victim must expose a WEBrick server that uses DigestAuth to the Internet or a untrusted network.
References
{
"affected": [
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"affectedData": [
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"versions": [
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"source": "cve@mitre.org"
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"configurations": [
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"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "WEBrick::HTTPAuth::DigestAuth in Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 has a regular expression Denial of Service cause by looping/backtracking. A victim must expose a WEBrick server that uses DigestAuth to the Internet or a untrusted network."
},
{
"lang": "es",
"value": "La funci\u00f3n WEBrick::HTTPAuth::DigestAuth en Ruby versiones hasta la versi\u00f3n 2.4.7, versiones 2.5.x hasta 2.5.6 y versiones 2.6.x hasta 2.6.4, tiene una expresi\u00f3n regular de denegaci\u00f3n de servicio causada mediante looping/backtracking. Una v\u00edctima debe exponer un servidor WEBrick que usa DigestAuth en Internet o una red no segura."
}
],
"id": "CVE-2019-16201",
"lastModified": "2026-06-17T02:21:53.007",
"metrics": {
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"baseSeverity": "HIGH",
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"accessVector": "NETWORK",
"authentication": "NONE",
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"baseScore": 7.8,
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"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
"version": "2.0"
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"obtainAllPrivilege": false,
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"source": "nvd@nist.gov",
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"baseScore": 7.5,
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"confidentialityImpact": "NONE",
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"privilegesRequired": "NONE",
"scope": "UNCHANGED",
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"published": "2019-11-26T18:15:15.100",
"references": [
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"url": "http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00041.html"
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{
"source": "cve@mitre.org",
"tags": [
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"tags": [
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"url": "https://lists.debian.org/debian-lts-announce/2019/11/msg00025.html"
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"url": "https://lists.debian.org/debian-lts-announce/2019/12/msg00009.html"
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{
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"url": "https://lists.debian.org/debian-lts-announce/2023/04/msg00033.html"
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"url": "https://seclists.org/bugtraq/2019/Dec/31"
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{
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"url": "https://security.gentoo.org/glsa/202003-06"
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{
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"url": "https://www.debian.org/security/2019/dsa-4587"
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{
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"url": "https://www.oracle.com/security-alerts/cpujan2020.html"
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{
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"tags": [
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"url": "https://lists.debian.org/debian-lts-announce/2019/11/msg00025.html"
},
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"url": "https://lists.debian.org/debian-lts-announce/2019/12/msg00009.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.debian.org/debian-lts-announce/2020/08/msg00027.html"
},
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"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.debian.org/debian-lts-announce/2023/04/msg00033.html"
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"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://seclists.org/bugtraq/2019/Dec/31"
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"url": "https://seclists.org/bugtraq/2019/Dec/32"
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"url": "https://security.gentoo.org/glsa/202003-06"
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"url": "https://www.debian.org/security/2019/dsa-4587"
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"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://www.oracle.com/security-alerts/cpujan2020.html"
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],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
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"description": [
{
"lang": "en",
"value": "CWE-287"
}
],
"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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