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Prior to this fix, Groovy's implementation of those extension methods was using a now superseded Java JDK method call that is potentially not secure on some operating systems in some contexts. Users not using the extension methods mentioned in the advisory are not affected, but may wish to read the advisory for further details. Versions Affected: 2.0 to 2.4.20, 2.5.0 to 2.5.13, 3.0.0 to 3.0.6, and 4.0.0-alpha-1. Fixed in versions 2.4.21, 2.5.14, 3.0.7, 4.0.0-alpha-2."}, {"lang": "es", "value": "Apache Groovy provee m\u00e9todos de extensi\u00f3n para ayudar a crear directorios temporales. Antes de esta correcci\u00f3n, la implementaci\u00f3n de Groovy de esos m\u00e9todos de extensi\u00f3n utilizaba una llamada al m\u00e9todo JDK de Java ahora reemplazada que potencialmente no es segura en algunos sistemas operativos en algunos contextos. Los usuarios que no usen los m\u00e9todos de extensi\u00f3n mencionados en el aviso no est\u00e1n afectados, pero es posible que deseen leer el aviso para obtener m\u00e1s detalles. Versiones afectadas: 2.0 hasta 2.4.20, 2.5.0 hasta 2.5.13, 3.0.0 hasta 3.0.6 y 4.0.0-alpha-1. Corregido en las versiones 2.4.21, 2.5.14, 3.0.7, 4.0.0-alpha-2"}], "id": "CVE-2020-17521", "lastModified": "2026-10-08T22:16:57.297", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 2.1, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2020-17521", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-08T21:07:57.374262Z", "version": "2.0.3"}}]}, "published": "2020-12-07T20:15:12.633", "references": [{"source": "security@apache.org", "tags": ["Third Party Advisory"], "url": "https://groovy-lang.org/security.html#CVE-2020-17521"}, {"source": "security@apache.org", "url": "https://lists.apache.org/thread.html/r4b2f13c302eec98838ff7475253091fb9b75bc1038016ba00ebf6c08%40%3Cdev.atlas.apache.org%3E"}, {"source": "security@apache.org", "url": "https://lists.apache.org/thread.html/ra9dab34bf8625511f23692ad0fcee2725f782e9aad6c5cdff6cf4465%40%3Cnotifications.groovy.apache.org%3E"}, {"source": "security@apache.org", "url": "https://lists.apache.org/thread.html/rea63a4666ba245d2892471307772a2d8ce0f0741f341d6576625c1b3%40%3Cdev.atlas.apache.org%3E"}, {"source": "security@apache.org", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20201218-0006/"}, {"source": "security@apache.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://www.oracle.com//security-alerts/cpujul2021.html"}, {"source": "security@apache.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://www.oracle.com/security-alerts/cpuApr2021.html"}, {"source": "security@apache.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"}, {"source": "security@apache.org", "tags": ["Patch", "Third Party Advisory"], "url": 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"af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://www.oracle.com/security-alerts/cpujan2021.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://www.oracle.com/security-alerts/cpujan2022.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://www.oracle.com/security-alerts/cpujul2022.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-Other"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2021:5134", "cpe": "cpe:/a:redhat:jboss_fuse:7", "package": "groovy", "product_name": "Red Hat Fuse 7.10", "release_date": "2021-12-14T00:00:00Z"}, {"advisory": "RHSA-2021:3205", "cpe": "cpe:/a:redhat:integration:1", "package": "groovy", "product_name": "Red Hat Integration", "release_date": "2021-08-18T00:00:00Z"}, {"advisory": "RHSA-2021:3207", "cpe": "cpe:/a:redhat:camel_quarkus:2", "impact": "moderate", "package": "groovy", "product_name": "Red Hat Integration Camel Quarkus 1", "release_date": "2021-08-18T00:00:00Z"}], "bugzilla": {"description": "groovy: OS temporary directory leads to information disclosure", "id": "1922123", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1922123"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "status": "verified"}, "cwe": "CWE-200", "details": ["Apache Groovy provides extension methods to aid with creating temporary directories. Prior to this fix, Groovy's implementation of those extension methods was using a now superseded Java JDK method call that is potentially not secure on some operating systems in some contexts. Users not using the extension methods mentioned in the advisory are not affected, but may wish to read the advisory for further details. Versions Affected: 2.0 to 2.4.20, 2.5.0 to 2.5.13, 3.0.0 to 3.0.6, and 4.0.0-alpha-1. Fixed in versions 2.4.21, 2.5.14, 3.0.7, 4.0.0-alpha-2.", "A flaw was found in Apache Groovy. Groovy makes use of a method for creating temporary directories which is not suitable for security-sensitive contexts and allows for sensitive information leakage. The highest threat from this vulnerability is to data confidentiality."], "mitigation": {"lang": "en:us", "value": "Setting the `java.io.tmpdir` system environment variable to a directory that is exclusively owned by the executing user will fix this vulnerability for all operating systems and all Groovy versions. Users who cannot easily move to the fixed Groovy versions may wish to consider using the JDK\u2019s Files#createTempDirectory method instead of the Groovy extension methods."}, "name": "CVE-2020-17521", "package_state": [{"cpe": "cpe:/a:redhat:jboss_developer_studio:12.", "fix_state": "Fix deferred", "impact": "low", "package_name": "groovy", "product_name": "Red Hat CodeReady Studio 12"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "groovy", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/a:redhat:jboss_amq:6", "fix_state": "Out of support scope", "package_name": "groovy", "product_name": "Red Hat JBoss A-MQ 6"}, {"cpe": "cpe:/a:redhat:jboss_fuse:6", "fix_state": "Will not fix", "package_name": "groovy", "product_name": "Red Hat JBoss Fuse 6"}, {"cpe": "cpe:/a:redhat:openshift:3.11", "fix_state": "Fix deferred", "impact": "low", "package_name": "jenkins", "product_name": "Red Hat OpenShift Container Platform 3.11"}, {"cpe": "cpe:/a:redhat:openshift:3.11", "fix_state": "Not affected", "package_name": "openshift3/ose-logging-elasticsearch5", "product_name": "Red Hat OpenShift Container Platform 3.11"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "impact": "low", "package_name": "jenkins", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "jenkins-2-plugins", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift4/ose-logging-elasticsearch5", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "impact": "low", "package_name": "openshift4/ose-metering-hive", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2020-11-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-17521\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-17521\nhttps://groovy-lang.org/security.html#CVE-2020-17521"], "statement": "This flaw is rated as having a security impact of Moderate and is not currently planned to be addressed in future updates of Red Hat Enterprise Linux 7. Red Hat Enterprise Linux 7 is now in Maintenance Support 2 Phase of the support and maintenance life cycle. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.\nIn OpenShift Container Platform (OCP) the vulnerable version of groovy is delivered in jenkins package and openshift4/ose-metering-hive container. The vulnerable groovy extension methods are not used directly in these components, therefore the impact by this vulnerability is Low.\nAlthough an affected version of groovy is shipped in CodeReady Studio, the vulnerable functionality is not used by default, so the impact of this vulnerability is set to Low.\nRed Hat CodeReady WorkSpaces 2.7.0 does not ship groovy so is not affected by this flaw.", "threat_severity": "Moderate"}