CVE-2020-13943

Si un cliente HTTP/2 conectado a Apache Tomcat versiones 10.0.0-M1 hasta 10.0.0-M7, versiones 9.0.0.M1 hasta 9.0.37 o versiones 8.5.0 hasta 8.5.57, excedió el número máximo acordado de transmisiones simultáneas para una conexión (en violación del protocolo HTTP/2), era posible que una petición subsiguiente realizada en esa conexión pudiera contener encabezados HTTP, incluyendo los pseudo encabezados HTTP/2, de una petición anterior en lugar de los encabezados previstos. Esto podría conllevar que los usuarios visualicen respuestas para recursos inesperados

A flaw was found in Apache Tomcat. If an HTTP/2 client exceeded the agreed maximum number of concurrent streams for a connection (in violation of the HTTP/2 protocol), it is possible that a subsequent request made on that connection could contain HTTP headers - including HTTP/2 pseudo headers - from a previous request rather than the intended headers. This could lead to users seeing responses for unexpected resources. The highest threat from this vulnerability is to data confidentiality.

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 5.4.1 serves as a replacement for Red Hat JBoss Web Server 5.4.0, and includes bug fixes, enhancements, and component upgrades, which are documented in the Release Notes, linked to in the References. Issues addressed include information leakage and null pointer vulnerabilities.