In a message posted to the Ratbox Mailinglist, Lee H wrote:
in resource starvation of the CPU.
This bug existed before we forked ircd-ratbox, as such it is present in
*ALL* versions of ircd-ratbox ever released.
We have now released ircd-ratbox-2.2.6, it is recommended that everybody
upgrades — the attack is fairly easy to abuse. Details follow in the next
IRCd-Ratbox is used by EFNet and some other IRC networks.
Filed Under: IRC News