CVE-2020-13934

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If a sufficient number of such requests were made, an OutOfMemoryException could occur leading to a denial of service."}, {"lang": "es", "value": "Una conexi\u00f3n directa h2c a Apache Tomcat versiones 10.0.0-M1 hasta 10.0.0-M6, versiones 9.0.0.M5 hasta 9.0.36 y versiones 8.5.1 hasta 8.5.56, no public\u00f3 el procesador HTTP/1.1 despu\u00e9s de la actualizaci\u00f3n a HTTP/2. Si un n\u00famero suficiente de tales peticiones fueron hechas, podr\u00eda ocurrir una OutOfMemoryException conllevando a una denegaci\u00f3n de servicio"}], "id": "CVE-2020-13934", "lastModified": "2026-10-08T22:16:56.700", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2020-13934", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-08T21:09:22.018198Z", "version": "2.0.3"}}]}, "published": "2020-07-14T15:15:11.007", "references": [{"source": "security@apache.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00084.html"}, {"source": "security@apache.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00088.html"}, {"source": 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{"affected_release": [{"advisory": "RHSA-2021:3140", "cpe": "cpe:/a:redhat:jboss_fuse:7", "impact": "low", "package": "tomcat", "product_name": "Red Hat Fuse 7.9", "release_date": "2021-08-11T00:00:00Z"}, {"advisory": "RHSA-2020:3306", "cpe": "cpe:/a:redhat:jboss_enterprise_web_server:5.3::el6", "package": "jws5-tomcat-0:9.0.30-5.redhat_6.1.el6jws", "product_name": "Red Hat JBoss Web Server 5.3 on RHEL 6", "release_date": "2020-08-04T00:00:00Z"}, {"advisory": "RHSA-2020:3306", "cpe": "cpe:/a:redhat:jboss_enterprise_web_server:5.3::el7", "package": "jws5-tomcat-0:9.0.30-5.redhat_6.1.el7jws", "product_name": "Red Hat JBoss Web Server 5.3 on RHEL 7", "release_date": "2020-08-04T00:00:00Z"}, {"advisory": "RHSA-2020:3306", "cpe": "cpe:/a:redhat:jboss_enterprise_web_server:5.3::el8", "package": "jws5-tomcat-0:9.0.30-5.redhat_6.1.el8jws", "product_name": "Red Hat JBoss Web Server 5.3 on RHEL 8", "release_date": "2020-08-04T00:00:00Z"}, {"advisory": "RHSA-2020:3308", "cpe": "cpe:/a:redhat:jboss_enterprise_web_server:5.3", "package": "tomcat", "product_name": "Red Hat JBoss Web Server (JWS) 5.3", "release_date": "2020-08-04T00:00:00Z"}, {"advisory": "RHSA-2020:3806", "cpe": "cpe:/a:redhat:openshift_application_runtimes:1.0", "package": "tomcat", "product_name": "Red Hat Runtimes Spring Boot 2.2.6", "release_date": "2020-09-23T00:00:00Z"}], "bugzilla": {"description": "tomcat: OutOfMemoryException caused by HTTP/2 connection leak could lead to DoS", "id": "1857040", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1857040"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-400", "details": ["An h2c direct connection to Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M5 to 9.0.36 and 8.5.1 to 8.5.56 did not release the HTTP/1.1 processor after the upgrade to HTTP/2. If a sufficient number of such requests were made, an OutOfMemoryException could occur leading to a denial of service.", "A flaw was found in Apache Tomcat, where an h2c direct connection did not release the HTTP/1.1 processor after the upgrade to HTTP/2. If a sufficient number of such requests are made, an OutOfMemoryException could occur, leading to a denial of service. The highest threat from this vulnerability is to system availability."], "name": "CVE-2020-13934", "package_state": [{"cpe": "cpe:/a:redhat:jboss_enterprise_brms_platform:7", "fix_state": "Not affected", "package_name": "tomcat", "product_name": "Red Hat Decision Manager 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "tomcat6", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "tomcat", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "impact": "low", "package_name": "pki-deps:10.6/pki-servlet-engine", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "tomcat", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:jboss_data_grid:6", "fix_state": "Out of support scope", "package_name": "jbossweb", "product_name": "Red Hat JBoss Data Grid 6"}, {"cpe": "cpe:/a:redhat:jboss_data_virtualization:6", "fix_state": "Out of support scope", "package_name": "jbossweb", "product_name": "Red Hat JBoss Data Virtualization 6"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_application_platform:6", "fix_state": "Out of support scope", "package_name": "jbossweb", "product_name": "Red Hat JBoss Enterprise Application Platform 6"}, {"cpe": "cpe:/a:redhat:jboss_fuse:6", "fix_state": "Out of support scope", "impact": "low", "package_name": "tomcat", "product_name": "Red Hat JBoss Fuse 6"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_web_server:3", "fix_state": "Not affected", "package_name": "tomcat", "product_name": "Red Hat JBoss Web Server 3"}, {"cpe": "cpe:/a:redhat:openstack:10", "fix_state": "Out of support scope", "package_name": "opendaylight", "product_name": "Red Hat OpenStack Platform 10 (Newton)"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Not affected", "package_name": "opendaylight", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_bpms_platform:7", "fix_state": "Not affected", "package_name": "tomcat", "product_name": "Red Hat Process Automation 7"}, {"cpe": "cpe:/a:redhat:rhel_software_collections:3", "fix_state": "Not affected", "package_name": "rh-java-common-tomcat", "product_name": "Red Hat Software Collections"}], "public_date": "2020-07-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-13934\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-13934\nhttp://mail-archives.apache.org/mod_mbox/tomcat-announce/202007.mbox/%3Cad62f54e-8fd7-e326-25f1-3bdf1ffa3818%40apache.org%3E\nhttp://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.0.0-M7\nhttp://tomcat.apache.org/security-7.html#Fixed_in_Apache_Tomcat_7.0.105\nhttp://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.57\nhttp://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.37"], "statement": "Red Hat Certificate System 10.0 and Red Hat Enterprise Linux 8's Identity Management, are using a vulnerable version of Tomcat that is bundled into the pki-servlet-engine component. However, HTTP/2 is not enabled in such a configuration, and it is not possible to trigger the flaw in a supported setup. A future update may fix the code.", "threat_severity": "Important"}

{}