Andrew Pollack's Blog

Technology, Family, Entertainment, Politics, and Random Noise

Critical Security Patch - Did you miss this? Update your DNS servers immediately.

By Andrew Pollack on 07/14/2008 at 03:51 PM EDT

Several days ago a major announcement was made about a fundamental flaw in the DNS protocol -- one of the most important underlying bits of infrastructure that makes the internet possible. This is not a flaw in the implementation by any specific vendor. This is a fundamental flaw in the protocol itself so:

Nearly every single operating system and appliance that provides name service caching is susceptible

This Network World article has details, as does this CNET "D3F3NS3 1N D3PTH" feature. You'll find a lot about this if you do a search.

The announcement was made several days ago in time with a patch release by a very large number of vendors so that everyone could get updated quickly. The nature of the exploit is apparently such that the patches do not necessarily provide enough information to reverse engineer the exploit. As such, exploits of the security hole are so far not known to be taking place.

Dan Kaminsky from IOActive Inc. discovered the flaw and worked with vendors to get the patches in place before he releases all the details of the flaw. He plans to do that the week of August 2nd at the Black Hat conference in Las Vegas.

Once the full details are out there, if you haven't patched your DNS server yet you're going to be in tough shape.


There are  - loading -  comments....

re: Critical Security Patch - Did you miss this? Update your DNS servers immediately.By Philip Storry on 07/14/2008 at 05:10 PM EDT
"This is not a flaw in the implementation by any specific vendor. This is a
fundamental flaw in the protocol itself..."

As I understand it, that's not so. The djbdns server software hasn't needed to
be patched, because its implementation isn't vulnerable.

Everything I've read about it indicates that this *is* an implementation issue
with the protocol - the protocol doesn't specify security measures that djbdns
uses, and (pretty much) only djbdns uses. Everyone else is now having to
implement those measures.

However, the delay in releasing details seems to have allowed people to rather
confuse the issue.
Well, we seem to read different things. By Andrew Pollack on 07/15/2008 at 12:19 PM EDT
Take a look at this link (shortened) http://bit.ly/3ZNjmM for more information.

This looks like a network level UDP port attack of some kind. It will be
interesting to see what it ends up being.


Other Recent Stories...

  1. 09/04/2018With two big projects on hold, I suddenly find myself very available for new short and long term projects. In twenty five years, I don't think I've ever written an entry like this, but if you need the kind of work I do now would be a great time to get in touch. Both of the big projects I had lined up for late summer and early fall have been placed on hold and will be that way for a while. With the kids now all off at college and careers, I'm open to more travel than such than I have been in decades, but unless something else comes along, I'll be here working on updates to Second Signal and other things that ...... 
  2. 07/13/2018Who is HCL and why is it a good thing that they are now the ones behind Notes and Domino?We need to address some biases here. IBM has made a deal under which the Notes & Domino software and intellectual property is now being developed and maintained by HCL America. HCL America is part of the very large "HCL Technologies" company that has grown from its roots in India to become an 8 Billion Dollar company with a global presence in the IT Industry. You could be excused for initially believing, as many people do when they hear this, that "they've outsourced the code to India where they'll milk it ...... 
  3. 03/21/2018Domino Apps on IOS is a Game Changer. Quit holding back.BOOM. This will be as important for the platform as Traveler. If your company has ditched Notes and Domino, I feel sorry for you. For companies that do use Notes/Domino this is a game changer and Apple should be paying attention. Here's why: There are hundreds of little Notes client applications you'd never spend the time and money to build and deploy for your internal user base on IOS that we use Notes for all the time (those of us still using it). Now, those are suddenly ALL available on the iPad. ...... 
  4. 02/15/2018Andrew’s Proposed Gun Laws 
  5. 05/05/2016Is the growing social-sourced economy the modern back door into socialism? 
  6. 04/20/2016Want to be whitelisted? Here are some sensible rules for web site advertising 
  7. 12/30/2015Fantastic new series on Syfy called “The Expanse” – for people who love traditional science fiction 
  8. 10/20/2015My suggestion is to stay away from PayAnywhere(dot)com  
  9. 08/07/2015Here is one for you VMWARE gurus - particularly if you run ESXi without fancy drive arrays 
  10. 08/06/2015The Killer of Orphans (Orphan Documents) 
Click here for more articles.....


pen icon Comment Entry
Subject
Your Name
Homepage
*Your Email
* Your email address is required, but not displayed.
 
Your thoughts....
 
Remember Me  

Please wait while your document is saved.