• Black Tuesday has one biggie

    No surprise, but Microsoft’s Black Tuesday patches include a fix to the “URI handling problem” that I talked about more than a month ago.

    This is the 0day security hole that Microsoft first denied existed, then begrudgingly agreed to fix.

    Adobe went so far as to patch Adobe Reader so it couldn’t be coerced into taking advantage of the security hole. Now Microsoft has issued a fix for the underlying problem, described in Security Bulletin MS07-061.

    The security hole only exists on Windows XP and Windows 2003 systems that have had Internet Explorer 7 installed. Apparently putting the latest, greatest, most secure Microsoft Web browser on your system also left your computer wide open to attack, not just directly via IE 7, but also “Outlook, Firefox, Adobe, Skype, and other applications,” according to CVE 2007-3896, the definitive reference on the topic.

    I’ll be watching this one closely. Stay tuned. In the interim, we remain at MS-DEFCON 2: Patch reliability is unclear. Unless you have an immediate, pressing need to install a specific patch, don’t do it.