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CVE-2020-5415

Concourse's GitLab auth allows impersonation

Published: Aug 12, 2020Updated: Nov 21, 2024 Sources: CVE List NVD GHSACWE-290
10.0CRITICAL
NVD MITRE
EPSS Score
1.2%
Top 34.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:CC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-290

Affected Products

Go
package-ecosystem
github.com/concourse/concourse
OSS Libraries
github.com/concourse/dex
OSS Libraries
VMware Tanzu
commercial·USaka tanzu
ConcourseMixed
Cloud & SaaS / virtualization
pivotal software
commercial·USaka pivotal
concourseOn-prem
DevTools & CI / ci-cd

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Initial Access
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References

https://github.com/concourse/concourse/security/advisories/GHSA-627p-rr78-99rj
github.com
https://tanzu.vmware.com/security/cve-2020-5415
tanzu.vmware.com
https://nvd.nist.gov/vuln/detail/CVE-2020-5415
nvd.nist.gov

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