FKIE_CVE-2021-28169
Vulnerability from fkie_nvd - Published: 2021-06-09 02:15 - Updated: 2026-06-17 03:45
Severity
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3 (Medium) - CVSS:3.1/
Summary
For Eclipse Jetty versions <= 9.4.40, <= 10.0.2, <= 11.0.2, it is possible for requests to the ConcatServlet with a doubly encoded path to access protected resources within the WEB-INF directory. For example a request to `/concat?/%2557EB-INF/web.xml` can retrieve the web.xml file. This can reveal sensitive information regarding the implementation of a web application.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| eclipse | jetty | * | |
| eclipse | jetty | * | |
| eclipse | jetty | * | |
| debian | debian_linux | 9.0 | |
| debian | debian_linux | 10.0 | |
| oracle | communications_cloud_native_core_policy | 1.14.0 | |
| oracle | rest_data_services | * | |
| netapp | active_iq_unified_manager | - | |
| netapp | active_iq_unified_manager | - | |
| netapp | hci | - | |
| netapp | management_services_for_element_software | - | |
| netapp | snap_creator_framework | - |
{
"affected": [
{
"affectedData": [
{
"product": "Eclipse Jetty",
"vendor": "The Eclipse Foundation",
"versions": [
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"lessThanOrEqual": "9.4.40",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
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"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThanOrEqual": "11.0.2",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
],
"source": "emo@eclipse.org"
}
],
"configurations": [
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"matchCriteriaId": "A1002EA3-6026-4AB3-B198-39AD7DBF3D10",
"versionEndExcluding": "9.4.41",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:eclipse:jetty:*:*:*:*:*:*:*:*",
"matchCriteriaId": "AC1A749D-761A-44B2-B7E3-6B24D34252A7",
"versionEndExcluding": "10.0.3",
"versionStartIncluding": "10.0.0",
"vulnerable": true
},
{
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}
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"negate": false,
"operator": "OR"
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"matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
"matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",
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{
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"matchCriteriaId": "2C134E13-D6B8-4F28-9EF0-C12BF8A380CF",
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{
"nodes": [
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"criteria": "cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:linux:*:*",
"matchCriteriaId": "F3E0B672-3E06-4422-B2A4-0BD073AEC2A1",
"vulnerable": true
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{
"criteria": "cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:windows:*:*",
"matchCriteriaId": "B55E8D50-99B4-47EC-86F9-699B67D473CE",
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"vulnerable": true
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"negate": false,
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],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "For Eclipse Jetty versions \u003c= 9.4.40, \u003c= 10.0.2, \u003c= 11.0.2, it is possible for requests to the ConcatServlet with a doubly encoded path to access protected resources within the WEB-INF directory. For example a request to `/concat?/%2557EB-INF/web.xml` can retrieve the web.xml file. This can reveal sensitive information regarding the implementation of a web application."
},
{
"lang": "es",
"value": "Para Eclipse Jetty versiones anteriores a 9.4.40 incluy\u00e9ndola, versiones anteriores a 10.0.2 incluy\u00e9ndola, versiones anteriores a 11.0.2 incluy\u00e9ndola, es posible que las petici\u00f3nes al ConcatServlet con una ruta doblemente codificada acceder a recursos protegidos dentro del directorio WEB-INF.\u0026#xa0;Por ejemplo, una petici\u00f3n a \"/concat?/%2557EB-INF/web.xml\" puede recuperar el archivo web.xml.\u0026#xa0;Esto puede revelar informaci\u00f3n confidencial sobre la implementaci\u00f3n de una aplicaci\u00f3n web"
}
],
"id": "CVE-2021-28169",
"lastModified": "2026-06-17T03:45:56.683",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 5.0,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 1.4,
"source": "emo@eclipse.org",
"type": "Secondary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 1.4,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2021-06-09T02:15:06.853",
"references": [
{
"source": "emo@eclipse.org",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/eclipse/jetty.project/security/advisories/GHSA-gwcr-j4wh-j3cq"
},
{
"source": "emo@eclipse.org",
"url": "https://lists.apache.org/thread.html/r04a4b4553a23aff26f42635a6ae388c3b162aab30a88d12e59d05168%40%3Cjira.kafka.apache.org%3E"
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],
"sourceIdentifier": "emo@eclipse.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-200"
}
],
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"value": "NVD-CWE-Other"
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],
"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
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