Affected: Apache Software Foundation Apache Tomcat

A bug in the handling of the pipelined requests in Apache Tomcat 9.0.0.M1 to 9.0.0.M18, 8.5.0 to 8.5.12, 8.0.0.RC1 to 8.0.42, 7.0.0 to 7.0.76, and 6.0.0 to 6.0.52, when send file was used, results in the pipelined request being lost when send file processing of the previous request completed. This could result in responses appearing to be sent for the wrong request. For example, a user agent that sent requests A, B and C could see the correct response for request A, the response for request C for request B and no response for request C.

Affected: Ubuntu:14.04:LTS: tomcat7, Ubuntu:16.04:LTS: tomcat8

It was discovered that Tomcat incorrectly handled certain pipelined requests when sendfile was used. A remote attacker could use this issue to obtain wrong responses possibly containing sensitive information. (CVE-2017-5647)

It was discovered that Tomcat incorrectly used the appropriate facade object. A malicious application could possibly use this to bypass Security Manager restrictions. (CVE-2017-5648)

It was discovered that Tomcat incorrectly handled error pages. A remote attacker could possibly use this issue to replace or remove the custom error page. (CVE-2017-5664)

It was discovered that Tomcat incorrectly handled the CORS filter. A remote attacker could possibly use this issue to perform cache poisoning. (CVE-2017-7674)