{ "document": { "aggregate_severity": { "text": "High" }, "category": "csaf_vex", "csaf_version": "2.0", "distribution": { "text": "TuxCare License Agreement", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "publisher": { "category": "vendor", "contact_details": "https://tuxcare.com/contact/", "name": "TuxCare", "namespace": "https://tuxcare.com/" }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://security.tuxcare.com/csaf/v2/els_os/debian10els/vex/2020/cve-2020-11996-els_os-debian10els.json" } ], "title": "Security update on CVE-2020-11996", "tracking": { "current_release_date": "2025-12-23T22:15:38Z", "generator": { "date": "2025-12-23T22:15:38Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2020-11996-ELS_OS-DEBIAN10ELS", "initial_release_date": "2020-06-26T17:15:00Z", "revision_history": [ { "date": "2020-06-26T17:15:00Z", "number": "1", "summary": "Initial version" }, { "date": "2025-11-29T10:49:04Z", "number": 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"Debian-10" }, { "category": "default_component_of", "full_product_name": { "name": "tomcat9-docs-9.0.31-1~deb10u12.all as a component of Debian None", "product_id": "Debian-10:tomcat9-docs-9.0.31-1~deb10u12.all" }, "product_reference": "tomcat9-docs-9.0.31-1~deb10u12.all", "relates_to_product_reference": "Debian-10" }, { "category": "default_component_of", "full_product_name": { "name": "tomcat9-examples-9.0.31-1~deb10u12.all as a component of Debian None", "product_id": "Debian-10:tomcat9-examples-9.0.31-1~deb10u12.all" }, "product_reference": "tomcat9-examples-9.0.31-1~deb10u12.all", "relates_to_product_reference": "Debian-10" } ] }, "vulnerabilities": [ { "cve": "CVE-2020-11996", "notes": [ { "category": "description", "text": "A specially crafted sequence of HTTP/2 requests sent to Apache Tomcat 10.0.0-M1 to 10.0.0-M5, 9.0.0.M1 to 9.0.35 and 8.5.0 to 8.5.55 could trigger high CPU usage for several seconds. If a sufficient number of such requests were made on concurrent HTTP/2 connections, the server could become unresponsive.", "title": "Vulnerability description" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "Debian-10:libtomcat9-embed-java-0:9.0.31-1~deb10u12+tuxcare.els1.all", "Debian-10:libtomcat9-embed-java-0:9.0.31-1~deb10u12+tuxcare.els3.all", "Debian-10:libtomcat9-java-0:9.0.31-1~deb10u12+tuxcare.els1.all", "Debian-10:libtomcat9-java-0:9.0.31-1~deb10u12+tuxcare.els3.all", "Debian-10:tomcat9-0:9.0.31-1~deb10u12+tuxcare.els1.all", "Debian-10:tomcat9-0:9.0.31-1~deb10u12+tuxcare.els3.all", "Debian-10:tomcat9-admin-0:9.0.31-1~deb10u12+tuxcare.els1.all", "Debian-10:tomcat9-admin-0:9.0.31-1~deb10u12+tuxcare.els3.all", 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"summary": "https://security.netapp.com/advisory/ntap-20200709-0002/", "url": "https://security.netapp.com/advisory/ntap-20200709-0002/" }, { "category": "external", "summary": "https://usn.ubuntu.com/4596-1/", "url": "https://usn.ubuntu.com/4596-1/" }, { "category": "external", "summary": "https://www.debian.org/security/2020/dsa-4727", "url": "https://www.debian.org/security/2020/dsa-4727" }, { "category": "external", "summary": "https://www.oracle.com/security-alerts/cpujan2021.html", "url": "https://www.oracle.com/security-alerts/cpujan2021.html" }, { "category": "external", "summary": "https://www.oracle.com/security-alerts/cpuoct2020.html", "url": "https://www.oracle.com/security-alerts/cpuoct2020.html" } ], "release_date": "2020-06-26T17:15:00Z", "remediations": [ { "category": "none_available", "details": "Affected", "product_ids": [ "Debian-10:libtomcat9-embed-java-9.0.31-1~deb10u12.all", "Debian-10:libtomcat9-java-9.0.31-1~deb10u12.all", "Debian-10:tomcat9-9.0.31-1~deb10u12.all", "Debian-10:tomcat9-admin-9.0.31-1~deb10u12.all", "Debian-10:tomcat9-common-9.0.31-1~deb10u12.all", "Debian-10:tomcat9-docs-9.0.31-1~deb10u12.all", "Debian-10:tomcat9-examples-9.0.31-1~deb10u12.all", "Debian-10:tomcat9-user-9.0.31-1~deb10u12.all" ] } ], "scores": [ { "cvss_v2": { "accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0" }, "cvss_v3": { "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" }, "products": [ 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