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GSA_kwCzR0hTQS13M2o1LXE4ZjItM2Nxcc4AATnx

High EPSS: 0.1738% (0.9475 Percentile) EPSS:
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Concurrent Execution using Shared Resource with Improper Synchronization in Apache Tomcat

Affected Packages Affected Versions Fixed Versions
maven:org.apache.tomcat:tomcat >= 6.0.16, < 6.0.50, >= 7.0.0, < 7.0.75, >= 8.0.0RC1, < 8.0.41, >= 8.5.0, <= 8.5.8, >= 9.0.0.M1, <= 9.0.0.M13 6.0.50, 7.0.75, 8.0.41, 8.5.9, 9.0.0.M14
30 Dependent packages
438 Dependent repositories

Affected Version Ranges

All affected versions

7.0.35, 7.0.37, 7.0.39, 7.0.40, 7.0.41, 7.0.42, 7.0.47, 7.0.50, 7.0.52, 7.0.53, 7.0.54, 7.0.55, 7.0.56, 7.0.57, 7.0.59, 7.0.61, 7.0.62, 7.0.63, 7.0.64, 7.0.65, 7.0.67, 7.0.68, 7.0.69, 7.0.70, 7.0.72, 7.0.73, 7.0.75, 7.0.76, 7.0.77, 7.0.78, 7.0.79, 7.0.81, 7.0.82, 7.0.84, 7.0.85, 7.0.86, 7.0.88, 7.0.90, 7.0.91, 7.0.92, 7.0.93, 7.0.94, 7.0.96, 7.0.99, 7.0.100, 7.0.103, 7.0.104, 7.0.105, 7.0.106, 7.0.107, 7.0.108, 7.0.109, 8.0.0-RC1, 8.0.0-RC3, 8.0.0-RC5, 8.0.0-RC10, 8.0.1, 8.0.3, 8.0.5, 8.0.8, 8.0.9, 8.0.11, 8.0.12, 8.0.14, 8.0.15, 8.0.17, 8.0.18, 8.0.20, 8.0.21, 8.0.22, 8.0.23, 8.0.24, 8.0.26, 8.0.27, 8.0.28, 8.0.29, 8.0.30, 8.0.32, 8.0.33, 8.0.35, 8.0.36, 8.0.37, 8.0.38, 8.0.39, 8.0.41, 8.0.42, 8.0.43, 8.0.44, 8.0.45, 8.0.46, 8.0.47, 8.0.48, 8.0.49, 8.0.50, 8.0.51, 8.0.52, 8.0.53, 8.5.0, 8.5.2, 8.5.3, 8.5.4, 8.5.5, 8.5.6, 8.5.8, 8.5.9, 8.5.11, 8.5.12, 8.5.13, 8.5.14, 8.5.15, 8.5.16, 8.5.19, 8.5.20, 8.5.21, 8.5.23, 8.5.24, 8.5.27, 8.5.28, 8.5.29, 8.5.30, 8.5.31, 8.5.32, 8.5.33, 8.5.34, 8.5.35, 8.5.37, 8.5.38, 8.5.39, 8.5.40, 8.5.41, 8.5.42, 8.5.43, 8.5.45, 8.5.46, 8.5.47, 8.5.49, 8.5.50, 8.5.51, 8.5.53, 8.5.54, 8.5.55, 8.5.56, 8.5.57, 8.5.58, 8.5.59, 8.5.60, 8.5.61, 8.5.63, 8.5.64, 8.5.65, 8.5.66, 8.5.68, 8.5.69, 8.5.70, 8.5.71, 8.5.72, 8.5.73, 8.5.75, 8.5.76, 8.5.77, 8.5.78, 8.5.79, 8.5.81, 8.5.82, 8.5.83, 8.5.84, 8.5.85, 8.5.86, 8.5.87, 8.5.88, 8.5.89, 8.5.90, 8.5.91, 8.5.92, 8.5.93, 8.5.94, 8.5.95, 8.5.96, 8.5.97, 8.5.98, 8.5.99, 8.5.100, 9.0.1, 9.0.2, 9.0.4, 9.0.5, 9.0.6, 9.0.7, 9.0.8, 9.0.10, 9.0.11, 9.0.12, 9.0.13, 9.0.14, 9.0.16, 9.0.17, 9.0.19, 9.0.20, 9.0.21, 9.0.22, 9.0.24, 9.0.26, 9.0.27, 9.0.29, 9.0.30, 9.0.31, 9.0.33, 9.0.34, 9.0.35, 9.0.36, 9.0.37, 9.0.38, 9.0.39, 9.0.40, 9.0.41, 9.0.43, 9.0.44, 9.0.45, 9.0.46, 9.0.48, 9.0.50, 9.0.52, 9.0.53, 9.0.54, 9.0.55, 9.0.56, 9.0.58, 9.0.59, 9.0.60, 9.0.62, 9.0.63, 9.0.64, 9.0.65, 9.0.67, 9.0.68, 9.0.69, 9.0.70, 9.0.71, 9.0.72, 9.0.73, 9.0.74, 9.0.75, 9.0.76, 9.0.78, 9.0.79, 9.0.80, 9.0.81, 9.0.82, 9.0.83, 9.0.84, 9.0.85, 9.0.86, 9.0.87, 9.0.88, 9.0.89, 9.0.90, 9.0.91, 9.0.93, 9.0.94, 9.0.95, 9.0.96, 9.0.97, 9.0.98, 10.0.0, 10.0.2, 10.0.4, 10.0.5, 10.0.6, 10.0.7, 10.0.8, 10.0.10, 10.0.11, 10.0.12, 10.0.13, 10.0.14, 10.0.16, 10.0.17, 10.0.18, 10.0.20, 10.0.21, 10.0.22, 10.0.23, 10.0.26, 10.0.27, 10.1.0, 10.1.1, 10.1.2, 10.1.4, 10.1.5, 10.1.6, 10.1.7, 10.1.8, 10.1.9, 10.1.10, 10.1.11, 10.1.12, 10.1.13, 10.1.14, 10.1.15, 10.1.16, 10.1.17, 10.1.18, 10.1.19, 10.1.20, 10.1.23, 10.1.24, 10.1.25, 10.1.26, 10.1.28, 10.1.29, 10.1.30, 10.1.31, 10.1.33, 10.1.34, 11.0.0, 11.0.1, 11.0.2

All unaffected versions

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:

Identifiers

GHSA-w3j5-q8f2-3cqq

CVE-2016-8745

Risk

Severity

High

EPSS

EPSS Percentage: 0.1738

EPSS Percentile: 0.9475

Classification

General

Source

GitHub Advisory Database

Origin

Unspecified

Repository

https://github.com/apache/tomcat

Date and time

Published

about 3 years ago

Updated

over 1 year ago

API

JSON