A malicious irc user could nuke any other irc user that uses bitchx, ircii or
scrollz out of irc (crash their irc client) by connecting to the same irc
network and sending a malicious CTCP UTC message.
For ircii: Update to ircii-20210314
For bitchx and scrollz: none yet
Given bug 776772 it's possible there's other vulnerabilities here too.
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