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HIGH

tomcat: information disclosure due to incorrect Processor sharing

Published Aug 10, 2017

Description

A bug in the error handling of the send file code for the NIO HTTP connector in Apache Tomcat 9.0.0.M1 to 9.0.0.M13, 8.5.0 to 8.5.8, 8.0.0.RC1 to 8.0.39, 7.0.0 to 7.0.73 and 6.0.16 to 6.0.48 resulted in the current Processor object being added to the Processor cache multiple times. This in turn meant that the same Processor could be used for concurrent requests. Sharing a Processor can result in information leakage between requests including, not not limited to, session ID and the response body. The bug was first noticed in 8.5.x onwards where it appears the refactoring of the Connector code for 8.5.x onwards made it more likely that the bug was observed. Initially it was thought that the 8.5.x refactoring introduced the bug but further investigation has shown that the bug is present in all currently supported Tomcat versions.

Affected products

Remediation

No remediation recorded yet.

Metrics

References (62)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner apache
Published Aug 10, 2017
Updated Nov 14, 2024
Reserved Oct 18, 2016
CISA Vulnrichment
Updated Dec 12, 2023
NVD
Status Modified
Modified Jun 17, 2026
Red Hat
Severity Important
Public date Dec 12, 2016
GHSA-W3J5-Q8F2-3CQQ