Both of them have said that apes and people are descended from a common ancestor.
Behe: Further, I find the idea of common descent (that all organisms share a common ancestor) fairly convincing, and have no particular reason to doubt it...." (Darwin's Black Box, page 5).
Dembski: In the question/answer period following the talk, I asked Dembski if the similar defects in the genetic makeup of apes and humans that make us the only creatures incapable of making our own ascorbic acid (vitamin C) weren't possible evidence of common ancestry, and Dembski astonished the creationists in the audience by admitting that, yes, it was possible that humans and apes share common ancestry. source
Yes indeed. Behe and Dembski are quite able to defend themselves and do so at length in the following sites:
Behe's Online Articles
Dembski's Site