Apache Tomcat: Low: HTTP Request Smuggling (CVE-2020-1935)
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)
- apache-tomcat-upgrade-7_0_100
- apache-tomcat-upgrade-8_5_51
- apache-tomcat-upgrade-9_0_31
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