Microsoft patches ‘super nasty’ Windows bugs

Microsoft Corp. patched three vulnerabilities in the company’s Server Message Block (SMB) file-sharing protocol, including two that could make “Swiss cheese” out of enterprise networks, according to one researcher.  “Expect to see a worm on this one in the very near future, [because] this is Blaster and Sasser all over again.” Those two worms, 2003’s Blaster and 2004’s Sasser, wreaked havoc worldwide as they spread to millions of Windows machines.

Of the three bugs outlined in the MS09-001 security bulletin, two were rated “critical,” the most serious ranking in Microsoft’s four-step scoring system, while the third was pegged “moderate.” The pair identified as critical are extremely dangerous because attackers can exploit them simply by sending malformed data to unpatched machines, according to the chief technology officer. “These flaws enable an attacker to send evil packets to a Microsoft computer and take any action they desire on that computer [with] no credentials required,” he said. “The only prerequisite for this attack to be successful is a connection from the attacker to the victim over the NetBIOS ports, TCP 139 or TCP 445. By default, most computers have these ports turned on. More people have blocked those ports, and more personal firewalls block them by default, but they are typically left open in a corporate network.”

Source: Computer World

Penentration Test Scenario’s

I’ve recently been trying to teach my young cousin the basics of computer security.  I started by having him get the Backtrack live-cd which is geared for penetration testing.

Once you have Backtrack running you need a dummy machine to test against.  People have packaged live-cd’s and virtual machines that are running some combination of the following:

  • Unpatched operating systems (Win XP SP1)
  • Unpatched applications (httpd, ftpd, etc)

You can find these ready to be exploited packages here:

Old softwares with bugs:

Do you have an old disc of Windows 9x or Redhat 6.2 lying around?

  1. Install VirtualBox
  2. Create your own virtual machine with those old OS discs that are now collecting dust

Have fun & remember to keep this limited to dummy machines 🙂