Atheme is a portable and secure set of open-source and modular IRC services. CertFP is certificate fingerprinting used to authenticate users to nicknames.
The “myuser_delete()” function in account.c does not properly remove CertFP entries when deleting user accounts.
A remote authenticated attacker may be able to cause a Denial of Service condition or gain access to an Atheme IRC Services user account.
There is no known workaround at this time.
All Atheme users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-irc/atheme-services-6.0.10"