Vulnerability-Lookup

Vulnerability from bitnami_vulndb

Published

2024-03-06 10:51

Modified

2026-09-08 08:34

Summary

Concourse's GitLab auth allows impersonation

Details

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.

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "concourse",
        "purl": "pkg:bitnami/concourse"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.3.1"
            },
            {
              "introduced": "6.4.0"
            },
            {
              "fixed": "6.4.1"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-5415"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:pivotal_software:concourse:*:*:*:*:*:*:*:*"
    ],
    "severity": "Critical"
  },
  "details": "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.",
  "id": "BIT-concourse-2020-5415",
  "modified": "2026-09-08T08:34:36.952Z",
  "published": "2024-03-06T10:51:03.790Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/concourse/concourse/security/advisories/GHSA-627p-rr78-99rj"
    },
    {
      "type": "ADVISORY",
      "url": "https://tanzu.vmware.com/security/cve-2020-5415"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-5415"
    }
  ],
  "schema_version": "1.5.0",
  "summary": "Concourse\u0027s GitLab auth allows impersonation"
}

CVE-2020-5415 (GCVE-0-2020-5415)

Vulnerability from cvelistv5 – Published: 2020-08-12 16:40 – Updated: 2024-09-16 17:53

Title

Concourse's GitLab auth allows impersonation

Summary

Severity

10 (Critical)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L

CWE

CWE-290 - Authentication Bypass by Spoofing

Assigner

pivotal CNA

CNA scorecard – unranked: 0 records in the last 180 days, 10 needed details

References

2 references

URL	Tags
https://github.com/concourse/concourse/security/a…	x_refsource_CONFIRM
https://tanzu.vmware.com/security/cve-2020-5415	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
VMware Tanzu	Concourse	Affected: 6.4 , < 6.4.1 (custom) Affected: 6.3 , < 6.3.1 (custom)

Date Public

2020-08-12 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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        "providerMetadata": {
          "dateUpdated": "2024-08-04T08:30:24.023Z",
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            ],
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    ],
    "cna": {
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      "descriptions": [
        {
          "lang": "en",
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        }
      ],
      "metrics": [
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            "attackComplexity": "LOW",
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            "availabilityImpact": "LOW",
            "baseScore": 10,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
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      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Concourse\u0027s GitLab auth allows impersonation",
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                          },
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                          }
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                      }
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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