Bugtraq: Re: SunOS 4.1.4 fingerd

[dittrich () cac washington edu (Dave Dittrich)]

On Thu, 16 May 1996, Andy Dills wrote:

> I know I have seen it written up someplace about the flaw when
> finger 0 () XXX com is done. (It shows a finger output on every user, which
> as we know, can be a very useful tool to those with bad intentions)
> ...
> Anyway, I have found that fingering . () XXX com also yeilds the same result.
The trick, as I learned it, was to use @@XXX.com on Ultrix systems.
After a quick test, I notice that single letters and "." don't work on
Ultrix, but any digit or "@" does.  Go figure.  Probably some Berkeley
student had a hangover the day they coded finger?

> Thus, we just added a user 0 (zero). Problem fixed.
Looks like you'll have to add a few more users! ;)

--
Dave Dittrich                  Client Services, Computing & Communications
dittrich () cac washington edu    University of Washington

<a href="http://www.washington.edu/People/dad/";>
Dave Dittrich / dittrich () cac washington edu</a>