{"api_version":"1","generated_at":"2026-07-23T05:01:14+00:00","cve":"CVE-2018-1256","urls":{"html":"https://cve.report/CVE-2018-1256","api":"https://cve.report/api/cve/CVE-2018-1256.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2018-1256","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-1256"},"summary":{"title":"CVE-2018-1256","description":"Spring Cloud SSO Connector, version 2.1.2, contains a regression which disables issuer validation in resource servers that are not bound to the SSO service. In PCF deployments with multiple SSO service plans, a remote attacker can authenticate to unbound resource servers which use this version of the SSO Connector with tokens generated from another service plan.","state":"PUBLIC","assigner":"security_alert@emc.com","published_at":"2018-05-07 16:22:00","updated_at":"2021-08-12 21:30:00"},"problem_types":["NVD-CWE-noinfo"],"metrics":[],"references":[{"url":"https://pivotal.io/security/cve-2018-1256","name":"https://pivotal.io/security/cve-2018-1256","refsource":"CONFIRM","tags":["Mitigation","Vendor Advisory"],"title":"CVE-2018-1256: Issuer validation regression in Spring Cloud SSO Connector | Security | VMware Tanzu","mime":"text/html","httpstatus":"200","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-1256","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-1256","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2018","cve_id":"1256","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"pivotal_software","cpe5":"spring_cloud_sso_connector","cpe6":"2.1.2","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2018","cve_id":"1256","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"pivotal_software","cpe5":"spring_cloud_sso_connector","cpe6":"2.1.2","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2018","cve_id":"1256","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"vmware","cpe5":"spring_cloud_sso_connector","cpe6":"2.1.2","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2018-1256","qid":"996929","title":"Java (Maven) Security Update for io.pivotal.spring.cloud:spring-cloud-sso-connector (GHSA-q4q2-93pw-qwgf)"}]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"security_alert@emc.com","DATE_PUBLIC":"2018-04-29T00:00:00","ID":"CVE-2018-1256","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Spring Cloud SSO Connector","version":{"version_data":[{"version_value":"2.1.2"}]}}]},"vendor_name":"Pivotal"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Spring Cloud SSO Connector, version 2.1.2, contains a regression which disables issuer validation in resource servers that are not bound to the SSO service. In PCF deployments with multiple SSO service plans, a remote attacker can authenticate to unbound resource servers which use this version of the SSO Connector with tokens generated from another service plan."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Improper Access Control"}]}]},"references":{"reference_data":[{"name":"https://pivotal.io/security/cve-2018-1256","refsource":"CONFIRM","url":"https://pivotal.io/security/cve-2018-1256"}]}},"nvd":{"publishedDate":"2018-05-07 16:22:00","lastModifiedDate":"2021-08-12 21:30:00","problem_types":["NVD-CWE-noinfo"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":8.1,"baseSeverity":"HIGH"},"exploitabilityScore":2.2,"impactScore":5.9},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:P/I:P/A:P","accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL","baseScore":6.8},"severity":"MEDIUM","exploitabilityScore":8.6,"impactScore":6.4,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:spring_cloud_sso_connector:2.1.2:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2018","CveId":"1256","Ordinal":"116551","Title":"CVE-2018-1256","CVE":"CVE-2018-1256","Year":"2018"},"notes":[{"CveYear":"2018","CveId":"1256","Ordinal":"1","NoteData":"Spring Cloud SSO Connector, version 2.1.2, contains a regression which disables issuer validation in resource servers that are not bound to the SSO service. In PCF deployments with multiple SSO service plans, a remote attacker can authenticate to unbound resource servers which use this version of the SSO Connector with tokens generated from another service plan.","Type":"Description","Title":null},{"CveYear":"2018","CveId":"1256","Ordinal":"2","NoteData":"2018-05-07","Type":"Other","Title":"Published"},{"CveYear":"2018","CveId":"1256","Ordinal":"3","NoteData":"2018-05-07","Type":"Other","Title":"Modified"}]}}}