Bugtraq mailing list archives
Re: SunOS 4.1.4 fingerd
From: bitblt () bitblt resnet cornell edu (bitblt () bitblt resnet cornell edu)
Date: Fri, 17 May 1996 11:27:00 -0400
On Fri, 17 May 1996, Steve Coleman - SEWP wrote:
I believe that the feature was to scan the login name field and if a match was not found to scan the gecos field for any partial information it could match on. Is it possible that the '.' and '@' are just forms of a regular expression or wildcard matching? If so then how many other wildcards are there to grep the password file?
. perhaps, but definitely not @. The @ issue works because what finger does is find the last @ in the string, strip it, and everything after it, and then pass what's left as an argument to the remote fingerd. In addition, fingerd functions on many systems by simply passing what it is given over the network as an argument to the finger command, using some variant on the exec function. Thus, when you: finger foobar@host3@host2@host1 your local finger client passes the string "foobar@host3@host2" to the fingerd on host1. The fingerd on host1 then passes that string to its local finger client, which in turn passes the string "foobar@host3" to the fingerd on host2. The fingerd on host2 passes this string to its local finger client, which in turn passes the string "foobar" to host3. The fingerd on host3 then calls its local finger client, which sees that there is no '@' in the string, and does a local lookup. This information is then passed along back from host3 to host2 to host1 and finally to your own host.
Current thread:
- SunOS 4.1.4 fingerd, (continued)
- SunOS 4.1.4 fingerd Andy Dills (May 16)
- Re: SunOS 4.1.4 fingerd Dave Dittrich (May 16)
- Re: fingerd problems Elliot Lee (May 16)
- Re: fingerd problems Jon Lewis (May 16)
- Re: fingerd problems Brian Mitchell (May 16)
- Re: fingerd problems Robert A. Pickering Jr. (May 17)
- Re: SunOS 4.1.4 fingerd Kevin at Paranoia (May 16)
- Re: SunOS 4.1.4 fingerd Christopher X. Candreva (May 16)
- Re: SunOS 4.1.4 fingerd Niko Makila (May 16)
- Re: SunOS 4.1.4 fingerd Steve Coleman - SEWP (May 17)
- Re: SunOS 4.1.4 fingerd bitblt () bitblt resnet cornell edu (May 17)
- Re: SunOS 4.1.4 fingerd Yiorgos Adamopoulos (May 17)
- Re: SunOS 4.1.4 fingerd David B. Vanderpool (May 17)
- Re: SunOS 4.1.4 fingerd Taner Halicioglu (May 17)
- Re: SunOS 4.1.4 fingerd Craig Raskin (May 17)
- Re: SunOS 4.1.4 fingerd Ed Arnold (May 16)
- Re: SunOS 4.1.4 fingerd Patrick Ferguson (May 20)
- Re: SunOS 4.1.4 fingerd Eilon Gishri (May 21)
- Re: SunOS 4.1.4 fingerd Alan Brown (May 22)
- CERT Vendor-Initiated Bulletin VB-96.06 - FreeBSD CERT Bulletin (May 20)
- Re: SunOS 4.1.4 fingerd invalid opcode (May 16)