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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
(The following advisory is also available in PDF
format for download at:
http://www.cybsec.com/vuln/CYBSEC-Security_Pre-Advisory_Microsoft_Windows_DHCP_Cl
ient_Service_Remote_Buffer_Overflow.pdf
CYBSEC S.A.
www.cybsec.com
Pre-Advisory Name: Microsoft Windows DHCP Client
Service Remote Buffer Overflow
==================
Vulnerability Class: Buffer Overflow
====================
Release Date: 07/11/2006
=============
Affected Platforms:
===================
* Microsoft Windows 2000 (<= SP4)
* Microsoft Windows XP (<= SP2)
* Microsoft Windows 2003 (<= SP1)
Local / Remote: Remote
===============
Severity: High
=========
Author: Mariano Nuñez Di Croce
=======
Vendor Status:
==============
* Confirmed, update released.
Reference to Vulnerability Disclosure Policy:
=============================================
http://www.cybsec.com/vulnerability_policy.pdf
Vulnerability Description:
==========================
A remote buffer overflow vulnerability has been
identified in Microsoft Windows DHCP-Client
service.
Technical Details:
==================
Technical details will be released 30 days after
publication of this pre-advisory.
This was agreed upon with Microsoft to allow
their customers to upgrade affected software prior
to technical knowledge been publicly available.
Impact:
=======
Exploiting this vulnerability, an attacker would
be able to execute code remotely with SYSTEM
privileges over DHCP-enabled Microsoft Windows
systems.
Solutions:
==========
Microsoft has released a hotfix to address this
vulnerability.
Customers should apply the hotfix immediately or
upgrade their systems through Microsoft Windows
Update system.
Vendor Response:
================
* 12/26/2005: Initial Vendor Contact.
* 01/19/2006: Vendor Confirmed Vulnerability.
* 07/11/2006: Vendor Releases Update.
* 07/11/2006: Pre-Advisory Public Disclosure.
Contact Information:
====================
For more information regarding the vulnerability
feel free to contact
the author at mnunez {at} cybsec.com.
For more information regarding CYBSEC:
www.cybsec.com
(c) 2006 - CYBSEC S.A. Security Systems
- --
- ------------------------------
Mariano Nuñez Di Croce
CYBSEC S.A. Security Systems
Email: mnunez@cybsec.com
Tel/Fax: (54-11) 4382-1600
Web: http://www.cybsec.com
PGP:
http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x26B20899
- ------------------------------
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