CVE Tools
Sign in

CVE-2020-5415

Concourse's GitLab auth allows impersonation

Published: Aug 12, 2020Updated: Nov 21, 2024 Sources: CVE List NVD GHSACWE-290
NVD MITRE
10.0CVSSCRITICAL
EPSS Score
1.2%
Top 35.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch 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.

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
Open in CVSS calculator →

Weaknesses

CWE-290

Affected Products

ConcourseVMware Tanzu
Mixed
Cloud & SaaS / virtualization
concoursepivotal software
Mixed
Cloud & SaaS / cloud-platform
github.com/concourse/concourseGoOSS Libraries
github.com/concourse/dexGoOSS Libraries
vmware tanzucommercialUSCloud & SaaSaka tanzu
pivotal softwarecommercialUSCloud & SaaSaka pivotal
gopackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

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

Timeline

Published
Aug 12, 2020
Last Updated
Nov 21, 2024

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2020-5415 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows