perl, webmin, usermin -- perl format string integer wrap vulnerability

The Perl Development page reports:

Dyad Security recently released a security advisory explaining how
in certain cases, a carefully crafted format string passed to
sprintf can cause a buffer overflow. This buffer overflow can then
be used by an attacker to execute code on the machine. This was
discovered in the context of a design problem with the Webmin
administration package that allowed a malicious user to pass
unchecked data into sprintf.