GSD-2020-5415
Vulnerability from gsd - Updated: 2023-12-13 01:22Details
Concourse, versions prior to 6.3.1 and 6.4.1, in installations which use the GitLab auth connector, is vulnerable to identity spoofing by way of configuring a GitLab account with the same full name as another user who is granted access to a Concourse team. GitLab groups do not have this vulnerability, so GitLab users may be moved into groups which are then configured in the Concourse team.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2020-5415",
"description": "Concourse, versions prior to 6.3.1 and 6.4.1, in installations which use the GitLab auth connector, is vulnerable to identity spoofing by way of configuring a GitLab account with the same full name as another user who is granted access to a Concourse team. GitLab groups do not have this vulnerability, so GitLab users may be moved into groups which are then configured in the Concourse team.",
"id": "GSD-2020-5415"
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2020-5415"
],
"details": "Concourse, versions prior to 6.3.1 and 6.4.1, in installations which use the GitLab auth connector, is vulnerable to identity spoofing by way of configuring a GitLab account with the same full name as another user who is granted access to a Concourse team. GitLab groups do not have this vulnerability, so GitLab users may be moved into groups which are then configured in the Concourse team.",
"id": "GSD-2020-5415",
"modified": "2023-12-13T01:22:03.885149Z",
"schema_version": "1.4.0"
}
},
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"DATE_PUBLIC": "2020-08-12T02:35:17.000Z",
"ID": "CVE-2020-5415",
"STATE": "PUBLIC",
"TITLE": "Concourse\u0027s GitLab auth allows impersonation"
},
"affects": {
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}
]
},
"impact": {
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"attackVector": "NETWORK",
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"baseScore": 10,
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"value": "CWE-290: Authentication Bypass by Spoofing"
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"url": "https://github.com/concourse/concourse/security/advisories/GHSA-627p-rr78-99rj"
},
{
"name": "https://tanzu.vmware.com/security/cve-2020-5415",
"refsource": "CONFIRM",
"url": "https://tanzu.vmware.com/security/cve-2020-5415"
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},
"source": {
"discovery": "UNKNOWN"
}
},
"gitlab.com": {
"advisories": [
{
"affected_range": "\u003cv6.3.1 || \u003e=v6.4.0 \u003cv6.4.1",
"affected_versions": "All versions before 6.3.1, all versions starting from 6.4.0 before 6.4.1",
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"cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N",
"cwe_ids": [
"CWE-1035",
"CWE-290",
"CWE-937"
],
"date": "2020-08-19",
"description": "Concourse, in installations which use the GitLab auth connector, is vulnerable to identity spoofing by way of configuring a GitLab account with the same full name as another user who is granted access to a Concourse team. GitLab groups do not have this vulnerability, so GitLab users may be moved into groups which are then configured in the Concourse team.",
"fixed_versions": [
"v6.3.1",
"v6.4.1"
],
"identifier": "CVE-2020-5415",
"identifiers": [
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"GHSA-627p-rr78-99rj"
],
"not_impacted": "All versions starting from 6.3.1, all versions starting from 6.4.1",
"package_slug": "go/github.com/concourse/concourse",
"pubdate": "2020-08-12",
"solution": "Upgrade to version 6.3.1, 6.4.1 or above",
"title": "Authentication Bypass by Spoofing",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2020-5415"
],
"uuid": "c21465b4-ebdd-4cc1-a676-ce203279df36",
"versions": [
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"cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N",
"cwe_ids": [
"CWE-1035",
"CWE-290",
"CWE-937"
],
"date": "2021-12-20",
"description": "Concourse, versions prior to 6.3.1 and 6.4.1, in installations which use the GitLab auth connector, is vulnerable to identity spoofing by way of configuring a GitLab account with the same full name as another user who is granted access to a Concourse team. GitLab groups do not have this vulnerability, so GitLab users may be moved into groups which are then configured in the Concourse team.",
"fixed_versions": [
"6.4.1",
"6.4.1"
],
"identifier": "CVE-2020-5415",
"identifiers": [
"GHSA-627p-rr78-99rj",
"CVE-2020-5415"
],
"not_impacted": "All versions before 6.4.0, all versions after 6.4.0, all versions before 6.3.0, all versions after 6.3.0",
"package_slug": "go/github.com/concourse/dex",
"pubdate": "2021-12-20",
"solution": "Upgrade to versions 6.4.1, 6.4.1 or above.",
"title": "Authentication Bypass by Spoofing",
"urls": [
"https://github.com/concourse/concourse/security/advisories/GHSA-627p-rr78-99rj",
"https://nvd.nist.gov/vuln/detail/CVE-2020-5415",
"https://tanzu.vmware.com/security/cve-2020-5415",
"https://github.com/advisories/GHSA-627p-rr78-99rj"
],
"uuid": "4b18761a-e775-4514-8d91-801e63ccd1ce"
}
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"impact": {
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"cvssV2": {
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"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 6.4,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:N",
"version": "2.0"
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"obtainOtherPrivilege": false,
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"severity": "MEDIUM",
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"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N",
"version": "3.1"
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}
},
"lastModifiedDate": "2020-08-19T14:04Z",
"publishedDate": "2020-08-12T17:15Z"
}
}
}
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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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