Yesterday the folks at DHS ICS-CERT updated their advisory for their fault generation advisory for various PLC controllers from Rockwell Automation Allen-Bradley. That earlier advisory was issued last Friday.
Not much new here, particularly if one had read Dale Peterson’s blog post on Monday. Apparently most of this information had already been available on the Rockwell web site (I’m not absolutely sure that’s true since you have to be a registered user to access that information, actually a pretty reasonable requirement), so I’m not sure why it wasn’t included in the original advisory. The updates do help paint a more complete picture of the vulnerability even though much of the new information could have been deduced from the original document.