Donato Ferrante

Application: PSOProxy
http://psoproxy.sourceforge.net/

Version: 0.91

Bug: Remote Buffer Overflow

Author: Donato Ferrante
e-mail: fdonato (at) autistici (dot) org [email concealed]
web: www.autistici.org/fdonato

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

1. Description
2. The bug
3. The code
4. The fix

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

----------------
1. Description:
----------------

Vendor's Description:

"PSOProxy is a web server application designed to work with the
Gamecube web browser. Its main purpose is to allow Phantasy Star Online
snapshot files to be copied to a PC and converted to a common image
file format."

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

------------
2. The bug:
------------

The server is not able to manage big input strings. In fact it will
have a buffer overflow.

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

-------------
3. The code:
-------------

To test the vulnerability send to the server a string like:

GET /aaaa[ 942 of a ]aaaa HTTP/1.1

or:

GET aaaa[ 942 of a ]aaaa HTTP/1.1

or:

aaaa[ 1035 of a ]aaaa

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

------------
4. The fix:
------------

No fix.
The vendor has not answered to my signalations.

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

[ reply ]