title: Apache Tomcat: Information disclosure
description: The simplified implementation of blocking reads and writes introduced in Tomcat 10 and back-ported to Tomcat 9.0.47 onwards exposed a long standing (but extremely hard to trigger) concurrency bug in Apache Tomcat 10.1.0 to 10.1.0-M12, 10.0.0-M1 to 10.0.18, 9.0.0-M1 to 9.0.60 and 8.5.0 to 8.5.77 that could cause client connections to share an Http11Processor instance resulting in responses, or part responses, to be received by the wrong client.
problem types: CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
affected:
{
vendor: Apache Software Foundation
product: Apache Tomcat
versions:
version: 10.1.0-M1 to 10.1.0-M12, status: affected
version: 10.0.0-M1 to 10.0.18, status: affected
version: 9.0.0-M1 to 9.0.60, status: affected
version: 8.5.0 to 8.5.77, status: affected
}
metrics:
other: [
type: unknown
content: {'other': 'important'}
]