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Error Handling The advisory has been revoked - it doesn't affect any version of package tomcat6  (opens in a new tab)

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EPSS
16.04% (97th percentile)

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  • Snyk IDSNYK-UBUNTU1404-TOMCAT6-329913
  • published10 Aug 2017
  • disclosed10 Aug 2017
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Introduced: 10 Aug 2017

CVE-2016-8745  (opens in a new tab)
CWE-388  (opens in a new tab)

Amendment

The Ubuntu security team deemed this advisory irrelevant for Ubuntu:14.04.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tomcat6 package and not the tomcat6 package as distributed by Ubuntu.

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.

References