AOH :: HP Unsorted B :: BX2422.HTM

BootManage TFTPD 1.99 buffer overflow



Buffer-overflow in BootManage TFTPD 1.99
Buffer-overflow in BootManage TFTPD 1.99




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                             Luigi Auriemma

Application:  BootManage TFTPD
http://www.bootix.com/products/administrator_en.html 
Versions:     <= 1.99 (BootManage Administrator <= 7.1)
Platforms:    Windows
Bug:          buffer-overflow
Exploitation: remote
Date:         16 Mar 2008
Author:       Luigi Auriemma
e-mail: aluigi@autistici.org 
              web:    aluigi.org


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1) Introduction
2) Bug
3) The Code
4) Fix


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==============1) Introduction
==============

BootManage TFTPD is a TFTP server for Windows implemented in BootManage
Administrator.
Although exist TFTP servers for other platforms on the bootix website,
only this 32 bit version for Windows is the most updated.


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=====2) Bug
=====

The TFTP server is affected by a buffer-overflow vulnerability
exploitable with a filename longer than 32 bytes when used for building
the log string: sprintf(buffer, "%s: %s", filename, log_entry)


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==========3) The Code
==========

http://aluigi.org/testz/tftpx.zip 

  tftpx -f SERVER 2000 none


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=====4) Fix
=====

No fix


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--- 
Luigi Auriemma
http://aluigi.org 

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