[REWTERZ-20060503] XM Easy Personal FTP Server Remote Buffer Overflow Vulnerability
REWTERZ-20060503 - XM Easy Personal FTP Server Remote Buffer Overflow
Vulnerability
Release Date:
May 3, 2006
Severity:
High (Remote Code Execution)
Vendor:
Dxmsoft
Software Affected:
XM Easy Personal FTP Server v4.3 and before
Operating Systems Affected:
Windows NT 4.0
Windows 98 / ME
Windows 2000
Windows XP
Windows 2003
Overview:
rewterz has discovered a critical vulnerability in XM Easy Personal FTP Server.
This vulnerability may allow a remote attacker to overwrite memory with user
controlled data and execute arbitrary code in the context of the user who
executed the XM Easy Personal FTP Server.
Technical Details:
This vulnerability exists in the handling of username input provided by the
user while making connection to FTP server. We chose not to provide detailed
information about the vulnerability and how to reproduce it because the author
hasn't confirmed this vulnerability. We can pass a long argument with some
commands into a buffer. There is no checking of the length of this input.
Depending on the input, this will cause exploitable condition.
We have confirmed the ability to execute our own code. This is a common buffer
overflow vulnerability and can be exploited easily.
Credit:
Discovery: Muhammad Ahmed Siddiqui
Greetings:
c0ntex
Copyright (c) 2003-2006 rewterz
Permission is hereby granted for the redistribution of this alert
electronically. It is not to be edited in any way without express consent of
rewterz.
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