{ "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-2020-1935-els_os-ubuntu18_04els.json" } ], "title": "Security update on CVE-2020-1935", "tracking": { "current_release_date": "2025-12-23T22:15:38Z", "generator": { "date": "2025-12-23T22:15:38Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2020-1935-ELS_OS-UBUNTU18.04ELS", "initial_release_date": "2020-02-24T22:15:00Z", "revision_history": [ { "date": "2020-02-24T22:15:00Z", "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-2020-1935", "cwe": { "id": "CWE-444", "name": "Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')" }, "notes": [ { "category": "description", "text": "In Apache Tomcat 9.0.0.M1 to 9.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99 the HTTP header parsing code used an approach to end-of-line parsing that allowed some invalid HTTP headers to be parsed as valid. This led to a possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly handled the invalid Transfer-Encoding header in a particular manner. Such a reverse proxy is considered unlikely.", "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-2020-1935" }, { "category": "external", "summary": "http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00025.html", "url": "http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00025.html" }, { "category": "external", "summary": "https://lists.apache.org/thread.html/r127f76181aceffea2bd4711b03c595d0f115f63e020348fe925a916c%40%3Cannounce.tomcat.apache.org%3E", "url": "https://lists.apache.org/thread.html/r127f76181aceffea2bd4711b03c595d0f115f63e020348fe925a916c%40%3Cannounce.tomcat.apache.org%3E" }, { "category": "external", "summary": "https://lists.apache.org/thread.html/r441c1f30a252bf14b07396286f6abd8089ce4240e91323211f1a2d75%40%3Cusers.tomcat.apache.org%3E", "url": "https://lists.apache.org/thread.html/r441c1f30a252bf14b07396286f6abd8089ce4240e91323211f1a2d75%40%3Cusers.tomcat.apache.org%3E" }, { "category": "external", "summary": "https://lists.apache.org/thread.html/r660cd379afe346f10d72c0eaa8459ccc95d83aff181671b7e9076919%40%3Cusers.tomcat.apache.org%3E", "url": "https://lists.apache.org/thread.html/r660cd379afe346f10d72c0eaa8459ccc95d83aff181671b7e9076919%40%3Cusers.tomcat.apache.org%3E" }, { "category": "external", "summary": "https://lists.apache.org/thread.html/r7bc994c965a34876bd94d5ff15b4e1e30b6220a15eb9b47c81915b78%40%3Ccommits.tomee.apache.org%3E", "url": "https://lists.apache.org/thread.html/r7bc994c965a34876bd94d5ff15b4e1e30b6220a15eb9b47c81915b78%40%3Ccommits.tomee.apache.org%3E" }, { "category": "external", "summary": "https://lists.apache.org/thread.html/r80e9c8417c77d52c62809168b96912bda70ddf7748f19f8210f745b1%40%3Cusers.tomcat.apache.org%3E", "url": "https://lists.apache.org/thread.html/r80e9c8417c77d52c62809168b96912bda70ddf7748f19f8210f745b1%40%3Cusers.tomcat.apache.org%3E" }, { "category": "external", "summary": "https://lists.apache.org/thread.html/r9ce7918faf347e7aac32be930bf26c233b0b140fe37af0bb294158b6%40%3Cdev.tomcat.apache.org%3E", "url": "https://lists.apache.org/thread.html/r9ce7918faf347e7aac32be930bf26c233b0b140fe37af0bb294158b6%40%3Cdev.tomcat.apache.org%3E" }, { "category": "external", "summary": "https://lists.apache.org/thread.html/ra5dee390ad2d60307b8362505c059cd6a726de4d146d63dfce1e05e7%40%3Cusers.tomcat.apache.org%3E", "url": "https://lists.apache.org/thread.html/ra5dee390ad2d60307b8362505c059cd6a726de4d146d63dfce1e05e7%40%3Cusers.tomcat.apache.org%3E" }, { "category": "external", "summary": "https://lists.apache.org/thread.html/rc31cbabb46cdc58bbdd8519a8f64b6236b2635a3922bbeba0f0e3743%40%3Ccommits.tomee.apache.org%3E", "url": "https://lists.apache.org/thread.html/rc31cbabb46cdc58bbdd8519a8f64b6236b2635a3922bbeba0f0e3743%40%3Ccommits.tomee.apache.org%3E" }, { "category": "external", "summary": "https://lists.apache.org/thread.html/rd547be0c9d821b4b1000a694b8e58ef9f5e2d66db03a31dfe77c4b18%40%3Cusers.tomcat.apache.org%3E", "url": "https://lists.apache.org/thread.html/rd547be0c9d821b4b1000a694b8e58ef9f5e2d66db03a31dfe77c4b18%40%3Cusers.tomcat.apache.org%3E" }, { "category": "external", "summary": "https://lists.debian.org/debian-lts-announce/2020/03/msg00006.html", "url": "https://lists.debian.org/debian-lts-announce/2020/03/msg00006.html" }, { "category": "external", "summary": "https://lists.debian.org/debian-lts-announce/2020/05/msg00026.html", "url": "https://lists.debian.org/debian-lts-announce/2020/05/msg00026.html" }, { "category": "external", "summary": "https://security.netapp.com/advisory/ntap-20200327-0005/", "url": "https://security.netapp.com/advisory/ntap-20200327-0005/" }, { "category": "external", "summary": "https://usn.ubuntu.com/4448-1/", "url": "https://usn.ubuntu.com/4448-1/" }, { "category": "external", "summary": "https://www.debian.org/security/2020/dsa-4673", "url": "https://www.debian.org/security/2020/dsa-4673" }, { "category": "external", "summary": "https://www.debian.org/security/2020/dsa-4680", "url": "https://www.debian.org/security/2020/dsa-4680" }, { "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/cpujul2020.html", "url": "https://www.oracle.com/security-alerts/cpujul2020.html" }, { "category": "external", "summary": "https://www.oracle.com/security-alerts/cpuoct2020.html", "url": "https://www.oracle.com/security-alerts/cpuoct2020.html" } ], "release_date": "2020-02-24T22:15:00", "scores": [ { "cvss_v2": { "accessComplexity": "MEDIUM", "accessVector": "NETWORK_ACCESSIBLE", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N", "version": "2.0" }, "cvss_v3": { "attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N", "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": "Medium" } ] } ] }