USSR Advisory #33 - InterAccess Telnetd 4.0 for Windows NT has a remotely exploitable buffer overflow at the login: prompt.
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Local / Remote Exploiteable Buffer Overflow Vulnerability in
InterAccess TelnetD Server 4.0 for Windows NT
USSR Advisory Code: USSR-2000033
Release Date:
February 22, 2000
Systems Affected:
InterAccess TelnetD Server 4.0 for Windows NT and possibly others
versions.
THE PROBLEM
UssrLabs found a Local / Remote Buffer overflow, The code that
handles the login commands in the telnet session
has an unchecked buffer that will allow arbitrary code to be executed
if it is overflowed.
Example:
[hellme@die-communitech.net$ telnet example.com
Trying example.com...
Connected to example.com.
Escape character is '^]'.
InterAccess TelnetD Server (30 Day Trial Version)
Release 4.0
Copyright (C) 1994-1999 by Pragma Systems, Inc.
All rights reserved.
This copy will expire on Tue Mar 21 21:55:14 2000
login name: (buffer)
Where [buffer] is aprox. 300 characters.
Binary or source for this Exploit:
http://www.ussrback.com/
Exploit: the Exploit, lags the machine until 100% cpu time
Vendor Status:
i email the vendor 4 times, and i dont have any responce :(
Vendor Url: http://www.pragmasys.com/
Program Url: http://www.pragmasys.com/TelnetD/
Credit: USSRLABS
SOLUTION
Noting yet.
Greetings:
Eeye, Attrition, w00w00, beavuh, Rhino9, ADM, HNN, Technotronic and
Wiretrip.
u n d e r g r o u n d s e c u r i t y s y s t e m s r e s e a r c
h
http://www.ussrback.com
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