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CVE-2020-1935

Status Candidate

Overview

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.

Related Files

Red Hat Security Advisory 2021-3140-01
Posted Aug 12, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3140-01 - This release of Red Hat Fuse 7.9.0 serves as a replacement for Red Hat Fuse 7.8, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References. Issues addressed include HTTP request smuggling, bypass, code execution, cross site scripting, denial of service, deserialization, information leakage, man-in-the-middle, memory leak, resource exhaustion, server-side request forgery, remote SQL injection, and traversal vulnerabilities.

tags | advisory, remote, web, denial of service, vulnerability, code execution, xss, sql injection, memory leak
systems | linux, redhat
advisories | CVE-2017-18640, CVE-2017-5645, CVE-2019-12402, CVE-2019-14887, CVE-2019-16869, CVE-2019-20445, CVE-2020-10688, CVE-2020-10693, CVE-2020-10714, CVE-2020-10719, CVE-2020-11996, CVE-2020-13920, CVE-2020-13934, CVE-2020-13935, CVE-2020-13936, CVE-2020-13954, CVE-2020-13956, CVE-2020-14040, CVE-2020-14297, CVE-2020-14338, CVE-2020-14340, CVE-2020-1695, CVE-2020-17510, CVE-2020-17518, CVE-2020-1925, CVE-2020-1935, CVE-2020-1938
SHA-256 | 7b87634aaeff995c7acbe482688b36f551a706a54a262f6607bd35c528818502
Red Hat Security Advisory 2021-1030-01
Posted Mar 30, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-1030-01 - Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages technologies. Issues addressed include a HTTP request smuggling vulnerability.

tags | advisory, java, web
systems | linux, redhat
advisories | CVE-2019-17563, CVE-2020-1935
SHA-256 | 3935e58afd07295cc71f6782e4167ea723d16977fcfd5afa0c078dd6a4e02853
Red Hat Security Advisory 2021-0882-01
Posted Mar 17, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0882-01 - Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages technologies. Issues addressed include a HTTP request smuggling vulnerability.

tags | advisory, java, web
systems | linux, redhat
advisories | CVE-2019-17563, CVE-2020-1935
SHA-256 | e8f6d5e2b2fb0dbb5c3eb2246f28919cf993ecb465542d7ab0a1b7dcad40f000
Red Hat Security Advisory 2020-5020-01
Posted Nov 10, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-5020-01 - Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages technologies. Issues addressed include a HTTP request smuggling vulnerability.

tags | advisory, java, web
systems | linux, redhat
advisories | CVE-2020-1935
SHA-256 | 7ec0216636921bc74503b64c483f37f3b81462c1fea8530c0042df557b9fbe89
Ubuntu Security Notice USN-4448-1
Posted Aug 5, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4448-1 - It was discovered that Tomcat incorrectly validated the payload length in a WebSocket frame. A remote attacker could possibly use this issue to cause Tomcat to hang, resulting in a denial of service. It was discovered that Tomcat incorrectly handled HTTP header parsing. In certain environments where Tomcat is located behind a reverse proxy, a remote attacker could possibly use this issue to perform HTTP Request Smuggling. Various other issues were also addressed.

tags | advisory, remote, web, denial of service
systems | linux, ubuntu
advisories | CVE-2020-13935, CVE-2020-1935, CVE-2020-9484
SHA-256 | 724049f922fdcaed76bab946a48ccfcb9b0e1d275e3effd77f8cf41f47d39f4a
Red Hat Security Advisory 2020-3305-01
Posted Aug 4, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-3305-01 - Red Hat JBoss Web Server is a fully integrated and certified set of components for hosting Java web applications. It is comprised of the Apache HTTP Server, the Apache Tomcat Servlet container, Apache Tomcat Connector, JBoss HTTP Connector, Hibernate, and the Tomcat Native library. This release of Red Hat JBoss Web Server 3.1 Service Pack 10 serves as a replacement for Red Hat JBoss Web Server 3.1, and includes bug fixes, which are documented in the Release Notes document linked to in the References. Issues addressed include HTTP request smuggling and denial of service vulnerabilities.

tags | advisory, java, web, denial of service, vulnerability
systems | linux, redhat
advisories | CVE-2020-13935, CVE-2020-1935
SHA-256 | c243b17e41ad7e85f479e20ba6faa1fef7e0ab201e56fd7ca1a104d4ca29c03c
Red Hat Security Advisory 2020-3303-01
Posted Aug 4, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-3303-01 - Red Hat JBoss Web Server is a fully integrated and certified set of components for hosting Java web applications. It is comprised of the Apache HTTP Server, the Apache Tomcat Servlet container, Apache Tomcat Connector, JBoss HTTP Connector, Hibernate, and the Tomcat Native library. This release of Red Hat JBoss Web Server 3.1 Service Pack 10 serves as a replacement for Red Hat JBoss Web Server 3.1, and includes bug fixes, which are documented in the Release Notes document linked to in the References. Issues addressed include HTTP request smuggling and denial of service vulnerabilities.

tags | advisory, java, web, denial of service, vulnerability
systems | linux, redhat
advisories | CVE-2020-13935, CVE-2020-1935
SHA-256 | 72459dedb4bc87767ff9ec4e3a6d02e13077fcfa240e22e8b5884e01dbfea3a3
Red Hat Security Advisory 2020-2367-01
Posted Jun 4, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2367-01 - Red Hat support for Spring Boot provides an application platform that reduces the complexity of developing and operating applications for OpenShift as a containerized platform. This release of Red Hat support for Spring Boot 2.1.13 serves as a replacement for Red Hat support for Spring Boot 2.1.12, and includes security and bug fixes and enhancements. Issues addressed include HTTP request smuggling and denial of service vulnerabilities.

tags | advisory, web, denial of service, vulnerability
systems | linux, redhat
advisories | CVE-2019-14888, CVE-2020-1745, CVE-2020-1935, CVE-2020-1938
SHA-256 | 648d3e7e6b8b0230e170a363c66446ba991afc1894fe7567edce53d9d649b7f8
Debian Security Advisory 4673-1
Posted May 28, 2020
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4673-1 - Several vulnerabilities were discovered in the Tomcat servlet and JSP engine, which could result in HTTP request smuggling and code execution in the AJP connector (disabled by default in Debian).

tags | advisory, web, vulnerability, code execution
systems | linux, debian
advisories | CVE-2019-17569, CVE-2020-1935, CVE-2020-1938
SHA-256 | ba3d584d4fdc2ced4b9b9288a441018d4480428ec0d74e435018d2230c3f1349
Debian Security Advisory 4680-1
Posted May 28, 2020
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4680-1 - Several vulnerabilities were discovered in the Tomcat servlet and JSP engine, which could result in HTTP request smuggling, code execution in the AJP connector (disabled by default in Debian) or a man-in-the-middle attack against the JMX interface.

tags | advisory, web, vulnerability, code execution
systems | linux, debian
advisories | CVE-2019-10072, CVE-2019-12418, CVE-2019-17563, CVE-2019-17569, CVE-2020-1935, CVE-2020-1938
SHA-256 | d84200d1f875157db5551cd1679c3bdbff3b6dbe5f87a455c1a84bf2902aa60e
Red Hat Security Advisory 2020-1520-01
Posted Apr 21, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-1520-01 - Red Hat JBoss Web Server is a fully integrated and certified set of components for hosting Java web applications. It is comprised of the Apache Tomcat Servlet container, JBoss HTTP Connector, the PicketLink Vault extension for Apache Tomcat, and the Tomcat Native library. This release of Red Hat JBoss Web Server 5.3 serves as a replacement for Red Hat JBoss Web Server 5.2, and includes bug fixes, enhancements, and component upgrades, which are documented in the Release Notes, linked to in the References. Issues addressed include a privilege escalation vulnerability.

tags | advisory, java, web
systems | linux, redhat
advisories | CVE-2019-12418, CVE-2019-17563, CVE-2019-17569, CVE-2020-1935, CVE-2020-1938
SHA-256 | 6481d3b4894b8257fe04a1de77cf86fde8705632a521c3292aa929df7bc8d021
Red Hat Security Advisory 2020-1521-01
Posted Apr 21, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-1521-01 - Red Hat JBoss Web Server is a fully integrated and certified set of components for hosting Java web applications. It is comprised of the Apache Tomcat Servlet container, JBoss HTTP Connector, the PicketLink Vault extension for Apache Tomcat, and the Tomcat Native library. This release of Red Hat JBoss Web Server 5.3 serves as a replacement for Red Hat JBoss Web Server 5.2, and includes bug fixes, enhancements, and component upgrades, which are documented in the Release Notes, linked to in the References. Issues addressed include a privilege escalation vulnerability.

tags | advisory, java, web
systems | linux, redhat
advisories | CVE-2019-12418, CVE-2019-17563, CVE-2019-17569, CVE-2020-1935, CVE-2020-1938
SHA-256 | d1ee13e290259d45fd58cb8efea63a50014e163459409719312becbb3261ff82
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