vulnerability

Red Hat: CVE-2020-1935: Mishandling of Transfer-Encoding header allows for HTTP request smuggling (Multiple Advisories)

Severity
6
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:N)
Published
Feb 24, 2020
Added
Nov 11, 2020
Modified
Jul 9, 2025

Description

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.

Solution(s)

no-fix-redhat-rpm-packageredhat-upgrade-apache-commons-collectionsredhat-upgrade-apache-commons-langredhat-upgrade-apache-commons-netredhat-upgrade-bea-stax-apiredhat-upgrade-glassfish-fastinfosetredhat-upgrade-glassfish-jaxb-apiredhat-upgrade-glassfish-jaxb-coreredhat-upgrade-glassfish-jaxb-runtimeredhat-upgrade-glassfish-jaxb-txw2redhat-upgrade-jackson-annotationsredhat-upgrade-jackson-coreredhat-upgrade-jackson-databindredhat-upgrade-jackson-jaxrs-json-providerredhat-upgrade-jackson-jaxrs-providersredhat-upgrade-jackson-module-jaxb-annotationsredhat-upgrade-jakarta-commons-httpclientredhat-upgrade-javassistredhat-upgrade-javassist-javadocredhat-upgrade-jssredhat-upgrade-jss-debuginforedhat-upgrade-jss-debugsourceredhat-upgrade-jss-javadocredhat-upgrade-ldapjdkredhat-upgrade-ldapjdk-javadocredhat-upgrade-pki-baseredhat-upgrade-pki-base-javaredhat-upgrade-pki-caredhat-upgrade-pki-core-debuginforedhat-upgrade-pki-core-debugsourceredhat-upgrade-pki-kraredhat-upgrade-pki-serverredhat-upgrade-pki-servlet-4-0-apiredhat-upgrade-pki-servlet-engineredhat-upgrade-pki-symkeyredhat-upgrade-pki-symkey-debuginforedhat-upgrade-pki-toolsredhat-upgrade-pki-tools-debuginforedhat-upgrade-python-nss-debugsourceredhat-upgrade-python-nss-docredhat-upgrade-python3-nssredhat-upgrade-python3-nss-debuginforedhat-upgrade-python3-pkiredhat-upgrade-relaxngdatatyperedhat-upgrade-resteasyredhat-upgrade-slf4jredhat-upgrade-slf4j-jdk14redhat-upgrade-stax-exredhat-upgrade-tomcatredhat-upgrade-tomcat-admin-webappsredhat-upgrade-tomcat-docs-webappredhat-upgrade-tomcat-el-2-2-apiredhat-upgrade-tomcat-javadocredhat-upgrade-tomcat-jsp-2-2-apiredhat-upgrade-tomcat-jsvcredhat-upgrade-tomcat-libredhat-upgrade-tomcat-servlet-3-0-apiredhat-upgrade-tomcat-webappsredhat-upgrade-tomcatjssredhat-upgrade-velocityredhat-upgrade-xalan-j2redhat-upgrade-xerces-j2redhat-upgrade-xml-commons-apisredhat-upgrade-xml-commons-resolverredhat-upgrade-xmlstreambufferredhat-upgrade-xsom
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