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.
Metrics
Affected Vendors & Products
Advisories
| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-779-1 | tomcat7 security update |
Debian DSA |
DSA-3754-1 | tomcat7 security update |
Debian DSA |
DSA-3755-1 | tomcat8 security update |
Github GHSA |
GHSA-w3j5-q8f2-3cqq | Concurrent Execution using Shared Resource with Improper Synchronization in Apache Tomcat |
Ubuntu USN |
USN-3177-1 | Tomcat vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Thu, 14 Nov 2024 20:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Status: PUBLISHED
Assigner: apache
Published:
Updated: 2024-11-14T20:02:16.961Z
Reserved: 2016-10-18T00:00:00
Link: CVE-2016-8745
Updated: 2024-08-06T02:35:00.119Z
Status : Deferred
Published: 2017-08-10T22:29:00.267
Modified: 2025-04-20T01:37:25.860
Link: CVE-2016-8745
OpenCVE Enrichment
No data.
Debian DLA
Debian DSA
Github GHSA
Ubuntu USN