Full Disclosure mailing list archives

Re: acFTP Authentication Issue


From: John Andersen <jsa () pen homeip net>
Date: Sat, 23 Nov 2002 21:37:13 -0900

On Saturday 23 November 2002 04:58 pm, Matthew Murphy wrote:
acFTP is an open-source FTP daemon for Windows platforms
(http://www.sourceforge.net/projects/acftp) that offers more functionality
than many proprietary servers (including the MS FTP service).  The
authentication code of acFTP contains a flaw -- specifically, the server
treats users as logged in without a valid password.  This results in
mis-representation of server activity in log files, and possibly privilege
elevation.

For example:

USER private
PASS #

This leads it to reject my password, but I can not log in with another set
of credentials, and my log activity appears as "private" instead of the
appropriate "-" or "***".

Provide a little clarification please.
Can you or can you not access files after giving a bogus password?
Other than a log issue, are you claiming and real exposure or
privledge elevation ?

-- 
_________________________________________________

John Andersen / Juneau Alaska
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