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.
References (2)
Core 2
Core References
Patch, Third Party Advisory x_refsource_confirm
https://github.com/concourse/concourse/security/advisories/GHSA-627p-rr78-99rj
Third Party Advisory x_refsource_confirm
https://tanzu.vmware.com/security/cve-2020-5415
Scores
CVSS v3
10.0
EPSS
0.0122
EPSS Percentile
64.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
Details
CWE
CWE-290
Status
published
Products (3)
concourse/concourse
6.4.0 - 6.4.1Go
concourse/dex
6.4.0 - 6.4.1Go
pivotal_software/concourse
< 6.3.1
Published
Aug 12, 2020
Tracked Since
Feb 18, 2026