{ "document": { "aggregate_severity": { "text": "Important" }, "category": "csaf_vex", "csaf_version": "2.0", "distribution": { "text": "TuxCare License Agreement", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.", "title": "Terms of Use" } ], "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/ubuntu18.04els/vex/2020/cve-2020-13934-els_os-ubuntu18_04els.json" } ], "title": "Security update on CVE-2020-13934", "tracking": { "current_release_date": "2025-12-23T22:15:38Z", "generator": { "date": "2025-12-23T22:15:38Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2020-13934-ELS_OS-UBUNTU18.04ELS", "initial_release_date": "2020-07-14T15:15:00Z", "revision_history": [ { "date": "2020-07-14T15:15:00Z", "number": "1", "summary": "Initial version" }, { "date": "2025-05-27T13:46:46Z", "number": "2", "summary": "Official Publication" }, { "date": "2025-12-23T22:15:38Z", "number": "3", "summary": "Update document" } ], "status": "final", "version": "2" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Ubuntu 18.04", "product": { "name": "Ubuntu 18.04", "product_id": "Ubuntu-18", "product_identification_helper": { "cpe": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*" } } } ], "category": "product_family", "name": "Ubuntu" } ], "category": "vendor", "name": "Canonical Ltd." }, { "branches": [ { "branches": [ { "category": "product_version", "name": "tomcat8-examples-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "product": { "name": "tomcat8-examples-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "product_id": "tomcat8-examples-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/tomcat8-examples@8.5.100-1ubuntu1~18.04.1%2Btuxcare.els1?arch=all" } } }, { "category": "product_version", "name": "tomcat8-common-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "product": { "name": "tomcat8-common-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "product_id": "tomcat8-common-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/tomcat8-common@8.5.100-1ubuntu1~18.04.1%2Btuxcare.els1?arch=all" } } }, { "category": "product_version", "name": "tomcat8-user-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "product": { "name": "tomcat8-user-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "product_id": "tomcat8-user-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/tomcat8-user@8.5.100-1ubuntu1~18.04.1%2Btuxcare.els1?arch=all" } } }, { "category": "product_version", "name": "libtomcat8-embed-java-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "product": { "name": "libtomcat8-embed-java-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "product_id": "libtomcat8-embed-java-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/libtomcat8-embed-java@8.5.100-1ubuntu1~18.04.1%2Btuxcare.els1?arch=all" } } }, { "category": "product_version", "name": "tomcat8-docs-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "product": { "name": "tomcat8-docs-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "product_id": "tomcat8-docs-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/tomcat8-docs@8.5.100-1ubuntu1~18.04.1%2Btuxcare.els1?arch=all" } } }, { "category": "product_version", "name": "tomcat8-admin-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "product": { "name": "tomcat8-admin-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "product_id": "tomcat8-admin-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/tomcat8-admin@8.5.100-1ubuntu1~18.04.1%2Btuxcare.els1?arch=all" } } }, { "category": "product_version", "name": "tomcat8-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "product": { "name": "tomcat8-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "product_id": "tomcat8-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/tomcat8@8.5.100-1ubuntu1~18.04.1%2Btuxcare.els1?arch=all" } } }, { "category": "product_version", "name": "libtomcat8-java-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "product": { "name": "libtomcat8-java-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "product_id": "libtomcat8-java-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/libtomcat8-java@8.5.100-1ubuntu1~18.04.1%2Btuxcare.els1?arch=all" } } } ], "category": "architecture", "name": "all" } ], "category": "vendor", "name": "CloudLinux" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "tomcat8-examples-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:tomcat8-examples-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all" }, "product_reference": "tomcat8-examples-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "tomcat8-common-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:tomcat8-common-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all" }, "product_reference": "tomcat8-common-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "tomcat8-user-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:tomcat8-user-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all" }, "product_reference": "tomcat8-user-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "libtomcat8-embed-java-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:libtomcat8-embed-java-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all" }, "product_reference": "libtomcat8-embed-java-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "tomcat8-docs-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:tomcat8-docs-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all" }, "product_reference": "tomcat8-docs-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "tomcat8-admin-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:tomcat8-admin-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all" }, "product_reference": "tomcat8-admin-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "tomcat8-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:tomcat8-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all" }, "product_reference": "tomcat8-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "libtomcat8-java-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:libtomcat8-java-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all" }, "product_reference": "libtomcat8-java-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "relates_to_product_reference": "Ubuntu-18" } ] }, "vulnerabilities": [ { "cve": "CVE-2020-13934", "cwe": { "id": "CWE-401", "name": "Missing Release of Memory after Effective Lifetime" }, "notes": [ { "category": "description", "text": "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.", "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": [ "Ubuntu-18:tomcat8-examples-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "Ubuntu-18:tomcat8-common-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "Ubuntu-18:tomcat8-user-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "Ubuntu-18:libtomcat8-embed-java-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "Ubuntu-18:tomcat8-docs-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "Ubuntu-18:tomcat8-admin-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "Ubuntu-18:tomcat8-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "Ubuntu-18:libtomcat8-java-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2020-13934" }, { "category": "external", "summary": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00084.html", "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00084.html" }, { "category": "external", "summary": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00088.html", "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00088.html" }, { "category": "external", "summary": "https://lists.apache.org/thread.html/r61f411cf82488d6ec213063fc15feeeb88e31b0ca9c29652ee4f962e%40%3Cannounce.tomcat.apache.org%3E", "url": "https://lists.apache.org/thread.html/r61f411cf82488d6ec213063fc15feeeb88e31b0ca9c29652ee4f962e%40%3Cannounce.tomcat.apache.org%3E" }, { "category": "external", "summary": "https://lists.apache.org/thread.html/ra072b1f786e7d139e86f1d1145572e0ff71cef38a96d9c6f5362aac8%40%3Cdev.tomcat.apache.org%3E", "url": "https://lists.apache.org/thread.html/ra072b1f786e7d139e86f1d1145572e0ff71cef38a96d9c6f5362aac8%40%3Cdev.tomcat.apache.org%3E" }, { "category": "external", "summary": "https://lists.debian.org/debian-lts-announce/2020/07/msg00017.html", "url": "https://lists.debian.org/debian-lts-announce/2020/07/msg00017.html" }, { "category": "external", "summary": "https://security.netapp.com/advisory/ntap-20200724-0003/", "url": "https://security.netapp.com/advisory/ntap-20200724-0003/" }, { "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/cpujul2021.html", "url": "https://www.oracle.com//security-alerts/cpujul2021.html" }, { "category": "external", "summary": "https://www.oracle.com/security-alerts/cpuApr2021.html", "url": "https://www.oracle.com/security-alerts/cpuApr2021.html" }, { "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/cpujan2022.html", "url": "https://www.oracle.com/security-alerts/cpujan2022.html" }, { "category": "external", "summary": "https://www.oracle.com/security-alerts/cpuoct2020.html", "url": "https://www.oracle.com/security-alerts/cpuoct2020.html" } ], "release_date": "2020-07-14T15:15:00", "scores": [ { "cvss_v2": { "accessComplexity": "LOW", "accessVector": "NETWORK_ACCESSIBLE", "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": [ "Ubuntu-18:tomcat8-examples-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "Ubuntu-18:tomcat8-common-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "Ubuntu-18:tomcat8-user-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "Ubuntu-18:libtomcat8-embed-java-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "Ubuntu-18:tomcat8-docs-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "Ubuntu-18:tomcat8-admin-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "Ubuntu-18:tomcat8-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all", "Ubuntu-18:libtomcat8-java-0:8.5.100-1ubuntu1~18.04.1+tuxcare.els1.all" ] } ], "threats": [ { "category": "impact", "details": "High" } ] } ] }