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acFTP Authentication Issue
From: "Matthew Murphy" <mattmurphy () kc rr com>
Date: Sat, 23 Nov 2002 19:57:30 -0600

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 "***".


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