Heimdal is a free implementation of Kerberos 5.
An unspecified privilege escalation vulnerability in the rshd server of Heimdal has been reported.
Authenticated users could exploit the vulnerability to escalate privileges or to change the ownership and content of arbitrary files.
There is no known workaround at this time.
All Heimdal users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-crypt/heimdal-0.7.2"