// For flags

CVE-2020-5415

Concourse's GitLab auth allows impersonation

Severity Score

10.0
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

Concourse, versiones anteriores a 6.3.1 y 6.4.1, en instalaciones que utilizan el conector de autenticación de GitLab, es vulnerable a la suplantación de identidad mediante la configuración 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

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
Low
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-01-03 CVE Reserved
  • 2020-08-12 CVE Published
  • 2023-04-28 EPSS Updated
  • 2024-09-16 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-290: Authentication Bypass by Spoofing
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Pivotal Software
Search vendor "Pivotal Software"
 Concourse
Search vendor "Pivotal Software" for product "Concourse"
 < 6.3.1
Search vendor "Pivotal Software" for product "Concourse" and version " < 6.3.1"
-
Affected
Pivotal Software
Search vendor "Pivotal Software"
 Concourse
Search vendor "Pivotal Software" for product "Concourse"
 >= 6.4.0 < 6.4.1
Search vendor "Pivotal Software" for product "Concourse" and version " >= 6.4.0 < 6.4.1"
-
Affected