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CVE-2020-5415 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:10 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

CNA: [email protected]CVSS-B:10 CRITICALVector:CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/concourse/concourse/security/advisories/GHSA-627p-rr78-99rj	CVE	PatchThird Party Advisory
https://tanzu.vmware.com/security/cve-2020-5415	CVE	Third Party Advisory
https://github.com/concourse/concourse/security/advisories/GHSA-627p-rr78-99rj	[email protected]	PatchThird Party Advisory
https://tanzu.vmware.com/security/cve-2020-5415	[email protected]	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-290	Authentication Bypass by Spoofing	[email protected]
CWE-290	Authentication Bypass by Spoofing	[email protected]

Affected Products

Product	Versions
pivotal software concourse	< 6.3.1 >= 6.4.0, < 6.4.1
CPE cpe:2.3:a:pivotal_software:concourse:::::::: Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Aug 19, 2020	Initial Analysis	[email protected]