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

Vulnerability from cvelistv5 – Published: 2020-08-12 16:40 – Updated: 2024-09-16 17:53
VLAI?
Title
Concourse's GitLab auth allows impersonation
Summary
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.
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
References
Impacted products
Vendor Product Version
VMware Tanzu Concourse Affected: 6.4 , < 6.4.1 (custom)
Affected: 6.3 , < 6.3.1 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T08:30:24.023Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/concourse/concourse/security/advisories/GHSA-627p-rr78-99rj"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://tanzu.vmware.com/security/cve-2020-5415"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Concourse",
          "vendor": "VMware Tanzu",
          "versions": [
            {
              "lessThan": "6.4.1",
              "status": "affected",
              "version": "6.4",
              "versionType": "custom"
            },
            {
              "lessThan": "6.3.1",
              "status": "affected",
              "version": "6.3",
              "versionType": "custom"
            }
          ]
        }
      ],
      "datePublic": "2020-08-12T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 10,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-290",
              "description": "CWE-290: Authentication Bypass by Spoofing",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-08-12T16:40:14",
        "orgId": "862b2186-222f-48b9-af87-f1fb7bb26d03",
        "shortName": "pivotal"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/concourse/concourse/security/advisories/GHSA-627p-rr78-99rj"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://tanzu.vmware.com/security/cve-2020-5415"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Concourse\u0027s GitLab auth allows impersonation",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security@pivotal.io",
          "DATE_PUBLIC": "2020-08-12T02:35:17.000Z",
          "ID": "CVE-2020-5415",
          "STATE": "PUBLIC",
          "TITLE": "Concourse\u0027s GitLab auth allows impersonation"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Concourse",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_name": "6.4",
                            "version_value": "6.4.1"
                          },
                          {
                            "version_affected": "\u003c",
                            "version_name": "6.3",
                            "version_value": "6.3.1"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "VMware Tanzu"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "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."
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 10,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L",
            "version": "3.0"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-290: Authentication Bypass by Spoofing"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/concourse/concourse/security/advisories/GHSA-627p-rr78-99rj",
              "refsource": "CONFIRM",
              "url": "https://github.com/concourse/concourse/security/advisories/GHSA-627p-rr78-99rj"
            },
            {
              "name": "https://tanzu.vmware.com/security/cve-2020-5415",
              "refsource": "CONFIRM",
              "url": "https://tanzu.vmware.com/security/cve-2020-5415"
            }
          ]
        },
        "source": {
          "discovery": "UNKNOWN"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "862b2186-222f-48b9-af87-f1fb7bb26d03",
    "assignerShortName": "pivotal",
    "cveId": "CVE-2020-5415",
    "datePublished": "2020-08-12T16:40:14.465847Z",
    "dateReserved": "2020-01-03T00:00:00",
    "dateUpdated": "2024-09-16T17:53:07.446Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:pivotal_software:concourse:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"6.3.1\", \"matchCriteriaId\": \"3D808A55-A17A-4DB6-BBA0-5D7166BD2755\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:pivotal_software:concourse:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.4.0\", \"versionEndExcluding\": \"6.4.1\", \"matchCriteriaId\": \"6D28012E-8883-447B-92A0-478ABCF19AF8\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"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.\"}, {\"lang\": \"es\", \"value\": \"Concourse, versiones anteriores a 6.3.1 y 6.4.1, en instalaciones que utilizan el conector de autenticaci\\u00f3n de GitLab, es vulnerable a la suplantaci\\u00f3n de identidad mediante la configuraci\\u00f3n 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\"}]",
      "id": "CVE-2020-5415",
      "lastModified": "2024-11-21T05:34:07.587",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N\", \"baseScore\": 10.0, \"baseSeverity\": \"CRITICAL\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"CHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 5.8}], \"cvssMetricV30\": [{\"source\": \"security@pivotal.io\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.0\", \"vectorString\": \"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L\", \"baseScore\": 10.0, \"baseSeverity\": \"CRITICAL\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"CHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"LOW\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 6.0}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:L/Au:N/C:P/I:P/A:N\", \"baseScore\": 6.4, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"LOW\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"PARTIAL\", \"integrityImpact\": \"PARTIAL\", \"availabilityImpact\": \"NONE\"}, \"baseSeverity\": \"MEDIUM\", \"exploitabilityScore\": 10.0, \"impactScore\": 4.9, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}",
      "published": "2020-08-12T17:15:12.633",
      "references": "[{\"url\": \"https://github.com/concourse/concourse/security/advisories/GHSA-627p-rr78-99rj\", \"source\": \"security@pivotal.io\", \"tags\": [\"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://tanzu.vmware.com/security/cve-2020-5415\", \"source\": \"security@pivotal.io\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://github.com/concourse/concourse/security/advisories/GHSA-627p-rr78-99rj\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://tanzu.vmware.com/security/cve-2020-5415\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}]",
      "sourceIdentifier": "security@pivotal.io",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"security@pivotal.io\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-290\"}]}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-290\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2020-5415\",\"sourceIdentifier\":\"security@pivotal.io\",\"published\":\"2020-08-12T17:15:12.633\",\"lastModified\":\"2024-11-21T05:34:07.587\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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.\"},{\"lang\":\"es\",\"value\":\"Concourse, versiones anteriores a 6.3.1 y 6.4.1, en instalaciones que utilizan el conector de autenticaci\u00f3n de GitLab, es vulnerable a la suplantaci\u00f3n de identidad mediante la configuraci\u00f3n 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\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N\",\"baseScore\":10.0,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":5.8}],\"cvssMetricV30\":[{\"source\":\"security@pivotal.io\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L\",\"baseScore\":10.0,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":3.9,\"impactScore\":6.0}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:P/I:P/A:N\",\"baseScore\":6.4,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":4.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"security@pivotal.io\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-290\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-290\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:pivotal_software:concourse:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"6.3.1\",\"matchCriteriaId\":\"3D808A55-A17A-4DB6-BBA0-5D7166BD2755\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:pivotal_software:concourse:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.4.0\",\"versionEndExcluding\":\"6.4.1\",\"matchCriteriaId\":\"6D28012E-8883-447B-92A0-478ABCF19AF8\"}]}]}],\"references\":[{\"url\":\"https://github.com/concourse/concourse/security/advisories/GHSA-627p-rr78-99rj\",\"source\":\"security@pivotal.io\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://tanzu.vmware.com/security/cve-2020-5415\",\"source\":\"security@pivotal.io\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/concourse/concourse/security/advisories/GHSA-627p-rr78-99rj\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://tanzu.vmware.com/security/cve-2020-5415\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.



Detection rules are retrieved from Rulezet.