CVE-2019-16201 (GCVE-0-2019-16201)
Vulnerability from cvelistv5 – Published: 2019-11-26 00:00 – Updated: 2024-08-05 01:10
VLAI
EPSS
VEX
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.
Severity
7.5 (High)
CWE
- n/a
Assigner
References
11 references
| URL | Tags |
|---|---|
| https://hackerone.com/reports/661722 | |
| https://lists.debian.org/debian-lts-announce/2019… | |
| https://lists.debian.org/debian-lts-announce/2019… | mailing-list |
| https://seclists.org/bugtraq/2019/Dec/31 | mailing-list |
| https://seclists.org/bugtraq/2019/Dec/32 | mailing-list |
| https://www.debian.org/security/2019/dsa-4587 | vendor-advisory |
| https://www.oracle.com/security-alerts/cpujan2020.html | |
| https://security.gentoo.org/glsa/202003-06 | vendor-advisory |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisory |
| https://lists.debian.org/debian-lts-announce/2020… | mailing-list |
| https://lists.debian.org/debian-lts-announce/2023… | mailing-list |
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"id": "CVE-2019-16201",
"lastModified": "2024-11-21T04:30:15.713",
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"published": "2019-11-26T18:15:15.100",
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"vulnStatus": "Modified",
"weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-287\"}]}]"
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"cve": "CVE-2019-16201",
"id": "msrc_CVE-2019-16201",
"initial_release_date": "2019-11-02T00:00:00.000Z",
"product_status:fixed": "1",
"product_status:known_affected": "1",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "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.",
"url": "https://msrc.microsoft.com/csaf/vex/2019/msrc_cve-2019-16201.json",
"version": "1"
},
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"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-06-28T11:58:16+00:00",
"cve": "CVE-2019-16201",
"id": "CVE-2019-16201",
"initial_release_date": "2019-10-01T00:00:00+00:00",
"product_status:fixed": "767",
"product_status:known_affected": "49",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "ruby: Regular expression denial of service vulnerability of WEBrick\u0027s Digest authentication",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2019/cve-2019-16201.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-08-31T02:34:50Z",
"cve": "CVE-2019-16201",
"id": "CVE-2019-16201",
"initial_release_date": "2023-02-15T04:08:12Z",
"product_status:known_affected": "322",
"product_status:known_not_affected": "60",
"product_status:recommended": "479",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2019-16201",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2019-16201.json",
"version": "36"
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}
}
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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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