Fixed in Apache Tomcat 8.5.16

Important: Security Constraint Bypass CVE-2017-7675

The HTTP/2 implementation bypassed a number of security checks that prevented directory traversal attacks. It was therefore possible to bypass security constraints using an specially crafted URL.

This was fixed in revision 1796091.

The issue was originally reported as a failure to process URL path parameters in bug 61120 on 24 May 2017. The full implications of this issue were identified by the Tomcat Security Team the same day. This issue was made public on 10 August 2017.

Affects: 8.5.0 to 8.5.15

Moderate: Cache Poisoning CVE-2017-7674

The CORS Filter did not add an HTTP Vary header indicating that the response varies depending on Origin. This permitted client and server side cache poisoning in some circumstances.

This was fixed in revision 1795814.

The issue was reported as bug 61101 on 16 May 2017. The full implications of this issue were identified by the Tomcat Security Team the same day. This issue was made public on 10 August 2017.

Affects: 8.5.0 to 8.5.15