Secunia reported a security advisory about file permissions issue with Parallels Desktop:
The security issue is caused due to /Library/StartupItems/Parallels/prl_dhcpd creating the file “/Library/Parallels/.dhcpd_configuration” with insecure file permissions (set to 666).
The security issue is reported in Parallels Desktop for Mac Build 1940. Other versions may also be affected.
No patch is available at the moment of writing. Check the advisor for updates at source.