CVE-2020-27223 (GCVE-0-2020-27223)
Vulnerability from cvelistv5 – Published: 2021-02-26 21:55 – Updated: 2025-08-20 10:03
VLAI
EPSS
VEX
Summary
In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values.
Severity
5.2 (Medium)
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
67 references
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| The Eclipse Foundation | Eclipse Jetty |
Affected:
9.4.6.v20170531 , < unspecified
(custom)
Affected: unspecified , ≤ 9.4.36.v20210114 (custom) Affected: 10.0.0 Affected: 11.0.0 |
guessed |
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"name": "[zookeeper-notifications] 20210308 [GitHub] [zookeeper] arshadmohammad commented on a change in pull request #1623: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223",
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"name": "[zookeeper-notifications] 20210309 [GitHub] [zookeeper] ztzg closed pull request #1624: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223",
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"name": "[zookeeper-notifications] 20210307 [GitHub] [zookeeper] ztzg opened a new pull request #1624: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223",
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"name": "[zookeeper-notifications] 20210308 [GitHub] [zookeeper] arshadmohammad commented on pull request #1624: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223",
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"name": "[zookeeper-notifications] 20210308 [GitHub] [zookeeper] arshadmohammad commented on pull request #1625: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223",
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"name": "[zookeeper-notifications] 20210308 [GitHub] [zookeeper] arshadmohammad commented on a change in pull request #1623: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223",
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"name": "[zookeeper-notifications] 20210309 [GitHub] [zookeeper] ztzg closed pull request #1624: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223",
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"name": "[zookeeper-notifications] 20210310 [GitHub] [zookeeper] asfgit closed pull request #1623: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223",
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"name": "[spark-reviews] 20210315 [GitHub] [spark] HyukjinKwon commented on pull request #31846: [SPARK-34752][BUILD] Bump Jetty to 9.4.37 to address CVE-2020-27223",
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"name": "[spark-reviews] 20210315 [GitHub] [spark] HyukjinKwon closed pull request #31846: [SPARK-34752][BUILD] Bump Jetty to 9.4.37 to address CVE-2020-27223",
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"lang": "en",
"value": "In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of \u201cquality\u201d (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values."
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"sourceIdentifier": "emo@eclipse.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-407"
}
],
"source": "emo@eclipse.org",
"type": "Secondary"
},
{
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{
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"value": "CWE-400"
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"source": "nvd@nist.gov",
"type": "Primary"
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},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-08-04T21:45:03+00:00",
"cve": "CVE-2020-27223",
"id": "CVE-2020-27223",
"initial_release_date": "2020-01-01T00:00:00+00:00",
"product_status:fixed": "24",
"product_status:known_affected": "52",
"product_status:known_not_affected": "147",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "jetty: request containing multiple Accept headers with a large number of \"quality\" parameters may lead to DoS",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-27223.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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