SquidClamav is a HTTP anti-virus for Squid based on ClamAV and ICAP.
SquidClamav does not properly escape URLs before passing them to the system command call.
A remote attacker could send a specially crafted URL to SquidClamav, possibly resulting in a Denial of Service condition.
There is no known workaround at this time.
All SquidClamav users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-proxy/squidclamav-6.8"