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.
CVSS Details
- CVSS 3.0 Base Score: 7.5
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux | — | Upgrade tomcat8Upgrade tomcat6Upgrade tomcat7 | Feb 15, 2017 | Jan 5, 2017 |
| Apache Tomcat | — | Upgrade Apache Tomcat to 9.0.0Upgrade Apache Tomcat to 7.0.75Upgrade Apache Tomcat to 8.0.41Upgrade Apache Tomcat to 6.0.50Upgrade Apache Tomcat to 8.5.9Upgrade Apache Tomcat to the latest available version | Aug 10, 2017 | Aug 10, 2017 |
| Centos_linux | — | Upgrade tomcat-webappsUpgrade tomcat-jsvcUpgrade tomcat6-jsp-2.1-apiUpgrade tomcat-libUpgrade tomcat-servlet-3.0-apiUpgrade tomcat6-docs-webappUpgrade tomcatUpgrade tomcat-el-2.2-apiUpgrade tomcat6-servlet-2.5-apiUpgrade tomcat-javadocUpgrade tomcat-admin-webappsUpgrade tomcat-jsp-2.2-apiUpgrade tomcat6-webappsUpgrade tomcat6-javadocUpgrade tomcat6-el-2.1-apiUpgrade tomcat6Upgrade tomcat-docs-webappUpgrade tomcat6-libUpgrade tomcat6-admin-webapps | Mar 20, 2017 | Jan 5, 2017 |
| Debian | — | Upgrade tomcat7 | Jan 9, 2017 | Jan 5, 2017 |
| Freebsd | — | Upgrade tomcat7Upgrade tomcat8Upgrade tomcat | Jan 8, 2017 | Jan 7, 2017 |
| Gentoo Linux | — | Upgrade www-servers/tomcat. | Oct 30, 2017 | Aug 10, 2017 |
| Huawei Euleros 2_0_sp1 | — | Upgrade tomcat-libUpgrade tomcat-jsp-2.2-apiUpgrade tomcat-el-2.2-apiUpgrade tomcat-admin-webappsUpgrade tomcatUpgrade tomcat-webappsUpgrade tomcat-servlet-3.0-api | Jan 18, 2018 | Aug 10, 2017 |
| Huawei Euleros 2_0_sp2 | — | Upgrade tomcat-libUpgrade tomcat-webappsUpgrade tomcatUpgrade tomcat-admin-webappsUpgrade tomcat-el-2.2-apiUpgrade tomcat-jsp-2.2-apiUpgrade tomcat-servlet-3.0-api | Jan 18, 2018 | Aug 10, 2017 |
| Oracle Solaris | — | Upgrade web/java-servlet/tomcat-8/tomcat-admin to version 8.5.9-0.175.3.16.0.3.0 on Solaris 11.3Upgrade web/java-servlet/tomcat-8/tomcat-examples to version 8.5.9-0.175.3.16.0.3.0 on Solaris 11.3Upgrade web/java-servlet/tomcat to version 6.0.53-0.175.3.20.0.3.0 on Solaris 11.3Upgrade web/java-servlet/tomcat-8 to version 8.5.9-0.175.3.16.0.3.0 on Solaris 11.3Upgrade web/java-servlet/tomcat/tomcat-examples to version 6.0.53-0.175.3.20.0.3.0 on Solaris 11.3 | May 29, 2017 | May 29, 2017 |
| Oracle_linux | — | Upgrade tomcat-jsvcUpgrade tomcat-docs-webappUpgrade tomcat6-webappsUpgrade tomcat6-servlet-2.5-apiUpgrade tomcat-servlet-3.0-apiUpgrade tomcat6Upgrade tomcat6-jsp-2.1-apiUpgrade tomcatUpgrade tomcat6-javadocUpgrade tomcat-el-2.2-apiUpgrade tomcat6-libUpgrade tomcat-admin-webappsUpgrade tomcat-jsp-2.2-apiUpgrade tomcat-libUpgrade tomcat6-el-2.1-apiUpgrade tomcat-javadocUpgrade tomcat6-docs-webappUpgrade tomcat6-admin-webappsUpgrade tomcat-webapps | Mar 18, 2017 | Dec 12, 2016 |
| Redhat_linux | — | Upgrade tomcat-docs-webappUpgrade tomcatUpgrade tomcat6-webappsUpgrade tomcat6-admin-webappsUpgrade tomcat6-jsp-2.1-apiUpgrade tomcat-javadocUpgrade tomcat-el-2.2-apiUpgrade tomcat6-javadocUpgrade tomcat-jsvcUpgrade tomcat6-docs-webappUpgrade tomcat-jsp-2.2-apiUpgrade tomcat6-libUpgrade tomcat-libUpgrade tomcat6-servlet-2.5-apiUpgrade tomcat6Upgrade tomcat-webappsUpgrade tomcat6-el-2.1-apiUpgrade tomcat-servlet-3.0-apiUpgrade tomcat-admin-webapps | Mar 19, 2017 | Jan 5, 2017 |
| Suse | — | Upgrade tomcat-webappsUpgrade tomcat6Upgrade tomcat-docs-webappUpgrade tomcat-admin-webappsUpgrade tomcat-servlet-4_0-apiUpgrade tomcat6-libUpgrade tomcat6-jsp-2_1-apiUpgrade tomcat-javadocUpgrade tomcat6-javadocUpgrade tomcat6-webappsUpgrade tomcat6-admin-webappsUpgrade tomcat-servlet-3_1-apiUpgrade tomcat-jsp-2_2-apiUpgrade tomcat-el-2_2-apiUpgrade tomcat-libUpgrade tomcat-servlet-3_0-apiUpgrade tomcat-jsp-2_3-apiUpgrade tomcat6-docs-webappUpgrade tomcat-el-3_0-apiUpgrade tomcatUpgrade tomcat6-servlet-2_5-api | May 10, 2017 | Jan 5, 2017 |
| Ubuntu | — | Upgrade tomcat7Upgrade libtomcat6-javaUpgrade libtomcat8-javaUpgrade libtomcat7-javaUpgrade tomcat8Upgrade tomcat6 | Jan 24, 2017 | Jan 5, 2017 |
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