The remote host is missing an update to the system as announced in the referenced advisory.

Update your system with the appropriate patches or software upgrades. http://www.squid-cache.org/Versions/v2/2.5/bugs/#squid-2.5.STABLE7-dothost http://www.vuxml.org/freebsd/f0db930b-496b-11d9-bf86-0050569f0001.html

The following package is affected: squid The installed version of squid suffers from an information disclosure vulnerability. An attacker that supplies malformed host names can gain access to sensitive information which may then be used to carry out further attacks.