On Apr 27, 2011, at 9:50 AM, Edward Ned Harvey wrote: > > Difficult, but certainly not impossible if verification is disabled.
Unless there is something that I am missing, an attack of this sort is simple in an environment with automated updates. Take a Debian system using cron-apt to install security updates. I can identify what is currently installed with 'dpkg -l'. From this and a mirror copy I can identify what will be installed during the next update. Determining the update schedule is as simple as looking at /etc/crontab. By default, anacron on Debian runs the cron.daily scripts at 6:25 AM. So, with less than 2 minutes work I know what and when. Now I can pick an executable that I know will be (re)started as root, and there are plenty to choose from. Let's say apachectl. The only difficulty is working up an exploit with a matching hash before 6:25 AM tomorrow. --Rich P. _______________________________________________ Discuss mailing list [email protected] http://lists.blu.org/mailman/listinfo/discuss
