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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 2021-1030-01
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
MD5 | 2d1ab7263e987996cb0412aaebd91415
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
MD5 | 5f4db2cba4c8f2c190519d621739101f
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
MD5 | 099a329060aa5f5330f19f1769829972
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
MD5 | f490bd6674a82d8af4d84ba15996c17f
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
MD5 | 6e1799e37ce5f20ef4e6ad6d064b44c3
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
MD5 | c3f05082eb8212198cca368d8f048dc0
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
MD5 | 0bb1faf39aa0c667cf7478cb7feaf07c
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
MD5 | 261f442204f082d31ecbd59b1b2e616e
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
MD5 | c60aa435de8678a1ff26836010ad236b
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