CVE-2011-1183 Apache Tomcat security constraint bypass

Severity: Important

Vendor: The Apache Software Foundation

Versions Affected:
- Tomcat 7.0.11
- Earlier versions are not affected

Description:
A regression in the fix for CVE-2011-1088 meant that security
constraints were ignored when no login configuration was present in the
web.xml and the web application was marked as meta-data complete.

Mitigation:
Users of affected versions should apply one of the following mitigations:
- Upgrade to a Tomcat 7.0.12 or later
- Ensure a login configuration is defined in web.xml

Credit:
This issue was identified by the Apache Tomcat security team.

References:
http://tomcat.apache.org/security.html
http://tomcat.apache.org/security-7.html