CVE-2022-42252 Information

Description

If Apache Tomcat 8.5.0 to 8.5.52 9.0.0-M1 to 9.0.67 10.0.0-M1 to 10.0.26 or 10.1.0-M1 to 10.1.0 was configured to ignore invalid HTTP headers via setting rejectIllegalHeader to false (the default for 8.5.x only) Tomcat did not reject a request containing an invalid Content-Length header making a request smuggling attack possible if Tomcat was located behind a reverse proxy that also failed to reject the request with the invalid header.

Reference

https://lists.apache.org/thread/zzcxzvqfdqn515zfs3dxb7n8gty589sq