The Net::IPAddress::Util module before 5.000 for Perl does not properly consider extraneous zero characters in an IP address string, which (in some situations) allows attackers to bypass access control that is based on IP addresses.
To install Net::IPAddress::Util, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Net::IPAddress::Util
CPAN shell
perl -MCPAN -e shell install Net::IPAddress::Util
For more information on module installation, please visit the detailed CPAN module installation guide.