Neohapsis is currently accepting applications for employment. For more information, please visit our website www.neohapsis.com or email firstname.lastname@example.org
Microsoft Explorer Denial of Service
From: Luca Ercoli (iolucaercoli.it)
Date: Tue Apr 05 2005 - 20:55:57 CDT
Package: Microsoft Explorer
Vulnerability: Denial of Service
- Tested on Windows XP Home Edition [explorer 6.00.2800.1106 (xpsp1.020828-1920)]
- Windows 2000 seem to be not vulnerable.
- Vulnerability has not been tested on other versions of Microsoft Windows
The information is provided "as is" without warranty of any kind.
The author of this issue shall not be held liable for any
downtime, lost profits, or damages due to the informations
contained in this advisory.
A vulnerability has been found in Microsoft Explorer (explorer.exe) for Windows XP,
which can be exploited by malicious user to compromise system stability
by consuming 99% CPU resources.
What causes the vulnerability?
A vulnerability has been discovered in the way that
Microsoft Explorer processes image's attributes for
the GIF file type.
A specially crafted image can be used to exploit this security flaw,
that will be triggered by navigating into a directory which
contains a malicious file (rarely, in order to exploit the vulnerability,
you must select the malicious image using the mouse or the keyboard).
The vendor has not been contacted
Luca Ercoli <io [at] lucaercoli.it>