Un tremendo fallo en awstats, del que ya se empiezan a ver consecuencias, permite ejecutar comandos arbitrarios en el servidor

Warning, a security hole was recently found in AWStats versions from 5.0 to 6.2 when AWStats is used as a CGI: A remote user can execute arbitrary commands on your server using permissions of your web server user (in most cases user “nobody”).
If you use AWStats with another version or with option AllowToUpdateStatsFromBrowser to 0, you are safe. If not, it is highly recommanded to update to 6.3 version that fix this security hole.

Si usáis awstats, más os vale actualizar ya mismo. Ah, yo uso webalizer :P