tomcat6: Fix multiple weaknesses in HTTP DIGESTS (important)

This update fixes a regression in parameter passing (in
urldecoding of parameters that contain spaces).

In addition, multiple weaknesses in HTTP DIGESTS are fixed
(CVE-2011-1184).

CVE-2011-5062: The HTTP Digest Access Authentication
implementation in Apache Tomcat 5.5.x before 5.5.34, 6.x
before 6.0.33 and 7.x before 7.0.12 does not check qop
values, which might allow remote attackers to bypass
intended integrity-protection requirements via a qop=auth
value, a different vulnerability than CVE-2011-1184.

CVE-2011-5063: The HTTP Digest Access Authentication
implementation in Apache Tomcat 5.5.x before 5.5.34, 6.x
before 6.0.33, and 7.x before 7.0.12 does not check realm
values, which might allow remote attackers to bypass
intended access restrictions by leveraging the availability
of a protection space with weaker authentication or
authorization requirements, a different vulnerability than
CVE-2011-1184.

CVE-2011-5064: DigestAuthenticator.java in the HTTP Digest
Access Authentication implementation in Apache Tomcat 5.5.x
before 5.5.34, 6.x before 6.0.33, and 7.x before 7.0.12
uses Catalina as the hard-coded server secret (aka private
key), which makes it easier for remote attackers to bypass
cryptographic protection mechanisms by leveraging knowledge
of this string, a different vulnerability than
CVE-2011-1184.