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NULL pointer crash in freeSSHd 1.20
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NULL pointer crash in freeSSHd 1.20
- To: bugtraq@xxxxxxxxxxxxxxxxx, news@xxxxxxxxxxxxxx, full-disclosure@xxxxxxxxxxxxxxxxx, vuln@xxxxxxxxxxx, packet@xxxxxxxxxxxxxxxxxxxxxxx
- Subject: NULL pointer crash in freeSSHd 1.20
- From: Luigi Auriemma <aluigi@xxxxxxxxxxxxx>
- Date: Tue, 19 Feb 2008 23:10:33 +0100
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Luigi Auriemma
Application: freeSSHd
http://www.freesshd.com
Note: is possible that the problem affects also
wodSSHServer anyway this has not been tested
Versions: <= 1.2.0
Platforms: Windows
Bug: NULL pointer crash
Exploitation: remote
Date: 17 Feb 2008
Author: Luigi Auriemma
e-mail: aluigi@xxxxxxxxxxxxx
web: aluigi.org
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1) Introduction
2) Bug
3) The Code
4) Fix
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===============
1) Introduction
===============
freeSSHd is a free SSH server for Windows.
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======
2) Bug
======
The server can be crashed through a NULL pointer access simply sending
a SSH2_MSG_NEWKEYS packet as first command.
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===========
3) The Code
===========
http://aluigi.org/poc/freesshdnull.zip
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======
4) Fix
======
No fix
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---
Luigi Auriemma
http://aluigi.org