CVE-2020-1927 (GCVE-0-2020-1927)
Vulnerability from cvelistv5 – Published: 2020-04-01 23:08 – Updated: 2024-08-04 06:53
VLAI
EPSS
VEX
Summary
In Apache HTTP Server 2.4.0 to 2.4.41, redirects configured with mod_rewrite that were intended to be self-referential might be fooled by encoded newlines and redirect instead to an an unexpected URL within the request URL.
Severity
6.1 (Medium)
CWE
- CWE-601 - mod_rewrite CWE-601 open redirect
Assigner
References
27 references
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Apache | Apache HTTP Server |
Affected:
2.4.0 to 2.4.41
|
guessed |
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"assignerShortName": "apache",
"cveId": "CVE-2020-1927",
"datePublished": "2020-04-01T23:08:43.000Z",
"dateReserved": "2019-12-02T00:00:00.000Z",
"dateUpdated": "2024-08-04T06:53:59.905Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
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"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2020-1927",
"date": "2026-09-16",
"epss": "0.56691",
"percentile": "0.99011"
},
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"descriptions": "[{\"lang\": \"en\", \"value\": \"In Apache HTTP Server 2.4.0 to 2.4.41, redirects configured with mod_rewrite that were intended to be self-referential might be fooled by encoded newlines and redirect instead to an an unexpected URL within the request URL.\"}, {\"lang\": \"es\", \"value\": \"En Apache HTTP Server versiones 2.4.0 hasta 2.4.41, los redireccionamientos configurados con mod_rewrite que pretend\\u00edan ser autorreferenciales podr\\u00edan ser enga\\u00f1ados por nuevas l\\u00edneas codificadas y redireccionadas en lugar de una URL inesperada dentro de la URL de petici\\u00f3n.\"}]",
"id": "CVE-2020-1927",
"lastModified": "2024-11-21T05:11:37.390",
"metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N\", \"baseScore\": 6.1, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"REQUIRED\", \"scope\": \"CHANGED\", \"confidentialityImpact\": \"LOW\", \"integrityImpact\": \"LOW\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 2.8, \"impactScore\": 2.7}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:M/Au:N/C:P/I:P/A:N\", \"baseScore\": 5.8, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"MEDIUM\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"PARTIAL\", \"integrityImpact\": \"PARTIAL\", \"availabilityImpact\": \"NONE\"}, \"baseSeverity\": \"MEDIUM\", \"exploitabilityScore\": 8.6, \"impactScore\": 4.9, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": true}]}",
"published": "2020-04-02T00:15:13.347",
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"sourceIdentifier": "security@apache.org",
"vulnStatus": "Modified",
"weaknesses": "[{\"source\": \"security@apache.org\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-601\"}]}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-601\"}]}]"
},
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Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpuApr2021.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpujul2020.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpujul2022.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-08-04T21:44:49+00:00",
"cve": "CVE-2020-1927",
"id": "CVE-2020-1927",
"initial_release_date": "2020-04-01T00:00:00+00:00",
"product_status:fixed": "409",
"product_status:known_not_affected": "10",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "httpd: mod_rewrite configurations vulnerable to open redirect",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-1927.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-09-04T00:52:39Z",
"cve": "CVE-2020-1927",
"id": "CVE-2020-1927",
"initial_release_date": "2023-02-15T04:04:14Z",
"product_status:known_affected": "37",
"product_status:known_not_affected": "3",
"product_status:recommended": "256",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2020-1927",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2020-1927.json",
"version": "12"
}
}
}
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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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