CVE-2020-5415 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact None

This CVE is not in the KEV list.

The EPSS score is 0.00257.

Key SSVC decision points have not yet been added.

Vendors	Products
Pivotal Software	Concourse

Configuration 1 [-]

OR	cpe:2.3:a:pivotal_software:concourse::::::::
	cpe:2.3:a:pivotal_software:concourse::::::::

No data.

No data.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://github.com/concourse/concourse/security/advisories/GHSA-627p-rr78-99rj
https://tanzu.vmware.com/security/cve-2020-5415

History

No history.

MITRE

Status: PUBLISHED

Assigner: pivotal

Published: 2020-08-12T16:40:14.465847Z

Updated: 2024-09-16T17:53:07.446Z

Reserved: 2020-01-03T00:00:00

Link: CVE-2020-5415

Vulnrichment

No data.

NVD

Status : Modified

Published: 2020-08-12T17:15:12.633

Modified: 2024-11-21T05:34:07.587

Link: CVE-2020-5415

Redhat

No data.

OpenCVE Enrichment

No data.

{"containers": {"cna": {"affected": [{"product": "Concourse", "vendor": "VMware Tanzu", "versions": [{"lessThan": "6.4.1", "status": "affected", "version": "6.4", "versionType": "custom"}, {"lessThan": "6.3.1", "status": "affected", "version": "6.3", "versionType": "custom"}]}], "datePublic": "2020-08-12T00:00:00", "descriptions": [{"lang": "en", "value": "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."}], "metrics": [{"cvssV3_0": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 10, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L", "version": "3.0"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-290", "description": "CWE-290: Authentication Bypass by Spoofing", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2020-08-12T16:40:14", "orgId": "862b2186-222f-48b9-af87-f1fb7bb26d03", "shortName": "pivotal"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/concourse/concourse/security/advisories/GHSA-627p-rr78-99rj"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://tanzu.vmware.com/security/cve-2020-5415"}], "source": {"discovery": "UNKNOWN"}, "title": "Concourse's GitLab auth allows impersonation", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security@pivotal.io", "DATE_PUBLIC": "2020-08-12T02:35:17.000Z", "ID": "CVE-2020-5415", "STATE": "PUBLIC", "TITLE": "Concourse's GitLab auth allows impersonation"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Concourse", "version": {"version_data": [{"version_affected": "<", "version_name": "6.4", "version_value": "6.4.1"}, {"version_affected": "<", "version_name": "6.3", "version_value": "6.3.1"}]}}]}, "vendor_name": "VMware Tanzu"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "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."}]}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 10, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L", "version": "3.0"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-290: Authentication Bypass by Spoofing"}]}]}, "references": {"reference_data": [{"name": "https://github.com/concourse/concourse/security/advisories/GHSA-627p-rr78-99rj", "refsource": "CONFIRM", "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"}]}, "source": {"discovery": "UNKNOWN"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T08:30:24.023Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/concourse/concourse/security/advisories/GHSA-627p-rr78-99rj"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://tanzu.vmware.com/security/cve-2020-5415"}]}]}, "cveMetadata": {"assignerOrgId": "862b2186-222f-48b9-af87-f1fb7bb26d03", "assignerShortName": "pivotal", "cveId": "CVE-2020-5415", "datePublished": "2020-08-12T16:40:14.465847Z", "dateReserved": "2020-01-03T00:00:00", "dateUpdated": "2024-09-16T17:53:07.446Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:pivotal_software:concourse:*:*:*:*:*:*:*:*", "matchCriteriaId": "3D808A55-A17A-4DB6-BBA0-5D7166BD2755", "versionEndExcluding": "6.3.1", "vulnerable": true}, {"criteria": "cpe:2.3:a:pivotal_software:concourse:*:*:*:*:*:*:*:*", "matchCriteriaId": "6D28012E-8883-447B-92A0-478ABCF19AF8", "versionEndExcluding": "6.4.1", "versionStartIncluding": "6.4.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Concourse, versiones anteriores a 6.3.1 y 6.4.1, en instalaciones que utilizan el conector de autenticaci\u00f3n de GitLab, es vulnerable a la suplantaci\u00f3n de identidad mediante la configuraci\u00f3n de una cuenta de GitLab con el mismo nombre completo que otro usuario al que se le concede acceso a un equipo de Concourse. Los grupos de GitLab no tienen esta vulnerabilidad, por lo que los usuarios de GitLab pueden ser movidos a grupos que luego son configurados en el equipo de Concourse"}], "id": "CVE-2020-5415", "lastModified": "2024-11-21T05:34:07.587", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "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"}, "exploitabilityScore": 10.0, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 10.0, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L", "version": "3.0"}, "exploitabilityScore": 3.9, "impactScore": 6.0, "source": "security@pivotal.io", "type": "Secondary"}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 10.0, "baseSeverity": "CRITICAL", "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"}, "exploitabilityScore": 3.9, "impactScore": 5.8, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-08-12T17:15:12.633", "references": [{"source": "security@pivotal.io", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/concourse/concourse/security/advisories/GHSA-627p-rr78-99rj"}, {"source": "security@pivotal.io", "tags": ["Third Party Advisory"], "url": "https://tanzu.vmware.com/security/cve-2020-5415"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/concourse/concourse/security/advisories/GHSA-627p-rr78-99rj"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://tanzu.vmware.com/security/cve-2020-5415"}], "sourceIdentifier": "security@pivotal.io", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-290"}], "source": "security@pivotal.io", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-290"}], "source": "nvd@nist.gov", "type": "Primary"}]}