[BSA-071] Security Update for request-tracker4

Dominic Hargreaves uploaded new packages for request-tracker4 which fixed
the following security problems:

CVE-2011-2082

The vulnerable-passwords scripts introduced for CVE-2011-0009
failed to correct the password hashes of disabled users.

CVE-2011-2083

Several cross-site scripting issues have been discovered.

CVE-2011-2084

Password hashes could be disclosed by privileged users.

CVE-2011-2085

Several cross-site request forgery vulnerabilities have been
found. If this update breaks your setup, you can restore the old
behaviour by setting $RestrictReferrer to 0.

CVE-2011-4458

The code to support variable envelope return paths allowed the
execution of arbitrary code.

CVE-2011-4459

Disabled groups were not fully accounted as disabled.

CVE-2011-4460

SQL injection vulnerability, only exploitable by privileged users.

For the squeeze-backports distribution the problems have been fixed in
version 4.0.5-3~bpo60+1.