title: Apache Tomcat request smuggling via malformed content-length
description: If Apache Tomcat 8.5.0 to 8.5.82, 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.
problem types: CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
affected:
{
defaultStatus: unaffected
product: Apache Tomcat
vendor: Apache Software Foundation
versions:
lessThanOrEqual: 10.1.0, status: affected, version: 10.1.0-M1, versionType: maven
lessThanOrEqual: 10.0.26, status: affected, version: 10.0.0-M1, versionType: maven
lessThanOrEqual: 9.0.67, status: affected, version: 9.0.0-M1, versionType: maven
lessThanOrEqual: 8.5.82, status: affected, version: 8.5.0, versionType: maven
}
metrics:
other: [
content: {'other': 'low'}
type: unknown
]