title: Apache Tomcat: AJP response header mix-up
description: A regression in the fix for bug 66512 in Apache Tomcat 11.0.0-M5, 10.1.8, 9.0.74 and 8.5.88 meant that, if a response did not include any HTTP headers no AJP SEND_HEADERS messare woudl be sent for the response which in turn meant that at least one AJP proxy (mod_proxy_ajp) would use the response headers from the previous request leading to an information leak.
problem types: Incorrect loop logic
affected:
{
defaultStatus: unaffected
product: Apache Tomcat
vendor: Apache Software Foundation
versions:
status: affected, version: 11.0.0-M5
status: affected, version: 10.1.8
status: affected, version: 9.0.74
status: affected, version: 8.5.88
}
metrics:
other: [
content: {'text': 'important'}
type: Textual description of severity
]