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osvGoogleOSV:GHSA-W3J5-Q8F2-3CQQ
HistoryMay 14, 2022 - 1:10 a.m.

Concurrent Execution using Shared Resource with Improper Synchronization in Apache Tomcat

2022-05-1401:10:16
Google
osv.dev
17
concurrent execution
shared resource
apache tomcat
bug
nio http connector
information leakage

EPSS

0.006

Percentile

79.4%

JSON

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

Related

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nessus 31
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Fedora Update for tomcat FEDORA-2017-19c5440abe
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EPSS

0.006

Percentile

79.4%

JSON
Related for OSV:GHSA-W3J5-Q8F2-3CQQ
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