CVE-2020-1935

A flaw was found in Apache Tomcat. The HTTP header parsing code used an approach to end-of-line (EOL) parsing that allowed some invalid HTTP headers to be parsed as valid. This led to the 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. The highest threat with this vulnerability is system availability.

OpenDaylight in Red Hat OpenStack 10 & 13 was in technical preview status, because of this no fixes will be released for it.

In Red Hat Satellite 6, Candlepin is using Tomcat to provide a REST API, and has been found to be vulnerable to the flaw. However, it is currently believed that no useful attacks can be carried over.

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.

Workaround for Red Hat Satellite 6 is to add iptables rule to deny TCP requests of Tomcat that are not originating from the Satellite.

For other Red Hat products, either mitigation isn't available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.