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Security Advisories: GSA_kwCzR0hTQS13M2o1LXE4ZjItM2Nxcc4AATnx

Concurrent Execution using Shared Resource with Improper Synchronization in Apache Tomcat

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.

Permalink: https://github.com/advisories/GHSA-w3j5-q8f2-3cqq
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS13M2o1LXE4ZjItM2Nxcc4AATnx
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 2 years ago
Updated: 9 months ago


CVSS Score: 7.5
CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Identifiers: GHSA-w3j5-q8f2-3cqq, CVE-2016-8745
References: Repository: https://github.com/apache/tomcat
Blast Radius: 19.8

Affected Packages

maven:org.apache.tomcat:tomcat
Dependent packages: 30
Dependent repositories: 438
Downloads:
Affected Version Ranges: >= 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
Fixed in: 6.0.50, 7.0.75, 8.0.41, 8.5.9, 9.0.0.M14
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, 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, 11.0.0
All unaffected versions: