SpamAssassin is an extensible email filter used to identify junk email.
It was discovered that SpamAssassin incorrectly handled certain CF files.
A remote attacker could entice a user or automated system to process a specially crafted CF file using SpamAssassin, possibly resulting in execution of arbitrary commands with the privileges of the process or a Denial of Service condition.
There is no known workaround at this time.
All SpamAssassin users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-filter/spamassassin-3.4.5"