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The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., > 32), then drop the connection."}, {"lang": "es", "value": "En nghttp2 versiones anteriores a 1.41.0, la carga \u00fatil de la trama HTTP/2 SETTINGS demasiado grande causa una denegaci\u00f3n de servicio. El ataque de prueba de concepto involucra a un cliente malicioso que construye una trama SETTINGS con una longitud de 14,400 bytes (2400 entradas de configuraciones individuales) una y otra vez. El ataque causa que la CPU se aumente al 100%. nghttp2 versi\u00f3n v1.41.0 corrige esta vulnerabilidad. Existe una soluci\u00f3n alternativa a esta vulnerabilidad. 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{"acknowledgement": "Red Hat would like to thank the Envoy security team for reporting this issue.", "affected_release": [{"advisory": "RHSA-2020:2644", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-curl-0:7.64.1-36.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-06-22T00:00:00Z"}, {"advisory": "RHSA-2020:2644", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-httpd-0:2.4.37-57.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-06-22T00:00:00Z"}, {"advisory": "RHSA-2020:2644", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-mod_cluster-native-0:1.3.14-4.Final_redhat_2.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-06-22T00:00:00Z"}, {"advisory": "RHSA-2020:2644", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-mod_http2-0:1.15.7-3.jbcs.el6", "product_name": "JBoss Core 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"RHSA-2020:2644", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-curl-0:7.64.1-36.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-06-22T00:00:00Z"}, {"advisory": "RHSA-2020:2644", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-httpd-0:2.4.37-57.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-06-22T00:00:00Z"}, {"advisory": "RHSA-2020:2644", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-mod_cluster-native-0:1.3.14-4.Final_redhat_2.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-06-22T00:00:00Z"}, {"advisory": "RHSA-2020:2644", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-mod_http2-0:1.15.7-3.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-06-22T00:00:00Z"}, {"advisory": "RHSA-2020:2644", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-mod_jk-0:1.2.48-4.redhat_1.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-06-22T00:00:00Z"}, {"advisory": "RHSA-2020:2644", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-mod_md-1:2.0.8-24.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-06-22T00:00:00Z"}, {"advisory": "RHSA-2020:2644", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-mod_security-0:2.9.2-51.GA.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-06-22T00:00:00Z"}, {"advisory": "RHSA-2020:2644", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-nghttp2-0:1.39.2-25.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-06-22T00:00:00Z"}, {"advisory": "RHSA-2020:2644", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-openssl-pkcs11-0:0.4.10-7.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-06-22T00:00:00Z"}, {"advisory": "RHSA-2020:2524", "cpe": "cpe:/a:redhat:service_mesh:1.0::el8", "package": "servicemesh-proxy-0:1.0.10-3.el8", "product_name": "OpenShift Service Mesh 1.0", "release_date": "2020-06-11T00:00:00Z"}, {"advisory": "RHSA-2020:2523", "cpe": "cpe:/a:redhat:service_mesh:1.1::el8", "package": "servicemesh-proxy-0:1.1.2-3.el8", "product_name": "OpenShift Service Mesh 1.1", "release_date": "2020-06-11T00:00:00Z"}, {"advisory": "RHSA-2020:2848", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "nodejs:10-8020020200617141353.4cda2c84", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-07-07T00:00:00Z"}, {"advisory": "RHSA-2020:2852", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "nodejs:12-8020020200630155331.4cda2c84", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-07-07T00:00:00Z"}, {"advisory": "RHSA-2020:2755", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "nghttp2-0:1.33.0-3.el8_2.1", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-06-25T00:00:00Z"}, {"advisory": "RHSA-2020:3042", "cpe": "cpe:/a:redhat:rhel_e4s:8.0", "package": "nodejs:10-8000020200617115915.f8e95b4e", "product_name": "Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions", "release_date": "2020-07-21T00:00:00Z"}, {"advisory": "RHSA-2020:2850", "cpe": "cpe:/o:redhat:rhel_e4s:8.0", "package": "nghttp2-0:1.33.0-1.el8_0.2", "product_name": "Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions", "release_date": "2020-07-07T00:00:00Z"}, {"advisory": "RHSA-2020:2847", "cpe": "cpe:/a:redhat:rhel_eus:8.1", "package": "nodejs:12-8010020200630154708.c27ad7f8", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2020-07-07T00:00:00Z"}, {"advisory": "RHSA-2020:2849", "cpe": "cpe:/a:redhat:rhel_eus:8.1", "package": "nodejs:10-8010020200617134056.c27ad7f8", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2020-07-07T00:00:00Z"}, {"advisory": "RHSA-2020:2823", "cpe": "cpe:/o:redhat:rhel_eus:8.1", "package": "nghttp2-0:1.33.0-3.el8_1.1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2020-07-06T00:00:00Z"}, {"advisory": "RHSA-2020:2646", "cpe": "cpe:/a:redhat:jboss_core_services:1", "package": "nghttp2", "product_name": "Red Hat JBoss Core Services 1", "release_date": "2020-06-22T00:00:00Z"}, {"advisory": "RHSA-2020:2784", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el6", "package": "httpd24-nghttp2-0:1.7.1-8.el6.1", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 6", "release_date": "2020-07-01T00:00:00Z"}, {"advisory": "RHSA-2020:2784", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "httpd24-nghttp2-0:1.7.1-8.el7.1", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2020-07-01T00:00:00Z"}, {"advisory": "RHSA-2020:2895", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-nodejs12-nodejs-0:12.18.2-1.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2020-07-13T00:00:00Z"}, {"advisory": "RHSA-2020:3084", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-nodejs10-nodejs-0:10.21.0-3.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2020-07-21T00:00:00Z"}, {"advisory": "RHSA-2020:2784", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "httpd24-nghttp2-0:1.7.1-8.el7.1", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS", "release_date": "2020-07-01T00:00:00Z"}, {"advisory": "RHSA-2020:2895", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-nodejs12-nodejs-0:12.18.2-1.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS", "release_date": "2020-07-13T00:00:00Z"}, {"advisory": "RHSA-2020:3084", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-nodejs10-nodejs-0:10.21.0-3.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS", "release_date": "2020-07-21T00:00:00Z"}, {"advisory": "RHSA-2020:2784", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "httpd24-nghttp2-0:1.7.1-8.el7.1", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS", "release_date": "2020-07-01T00:00:00Z"}, {"advisory": "RHSA-2020:2895", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-nodejs12-nodejs-0:12.18.2-1.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS", "release_date": "2020-07-13T00:00:00Z"}, {"advisory": "RHSA-2020:3084", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-nodejs10-nodejs-0:10.21.0-3.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS", "release_date": "2020-07-21T00:00:00Z"}], "bugzilla": {"description": "nghttp2: overly large SETTINGS frames can lead to DoS", "id": "1844929", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1844929"}, "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-770", "details": ["In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., > 32), then drop the connection.", "A resource consumption vulnerability was found in nghttp2. This flaw allows an attacker to repeatedly construct an overly large HTTP/2 SETTINGS frame with a length of 14,400 bytes that causes excessive CPU usage, leading to a denial of service."], "name": "CVE-2020-11080", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "nodejs:14/nodejs", "product_name": "Red Hat Enterprise Linux 8"}], "public_date": "2020-06-02T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-11080\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-11080\nhttps://github.com/nghttp2/nghttp2/security/advisories/GHSA-q5wr-xfw9-q7xr"], "threat_severity": "Important", "upstream_fix": "node 10.21.0, node 12.18.0, node 14.4.0, nghttp2 1.41.0"}