RE: Exploit based on leaked code released. Feb 16 2004 08:27PM
tlarholm pivx com
I can verify that the attached Proof of Concept bitmap produced a DoS on
several IE versions, including

IE5.01 SP1 5.00.2614.3500 on Windows 2000 Pro SP2
IE5.01 SP1 5.00.2920.0000 on Windows 2000 Pro SP2
IE5.01 SP2 5.00.3315.1000 on Windows 2000 Pro SP2

The latter configuration is still supported by Microsoft and gave a blue


The Product Life Cycle Dates lists IE5.01SP2 on Windows 2000 SP2 as
being supported until June 30, 2004.


Thor Larholm
Senior Security Researcher
PivX Solutions
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Newport Beach, CA 92660
thor (at) pivx (dot) com [email concealed]
Phone: +1 (949) 231-8496
PGP: 0x5A276569
6BB1 B77F CB62 0D3D 5A82 C65D E1A4 157C 5A27 6569

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-----Original Message-----
From: Christopher Carboni [mailto:ccarboni (at) azerty (dot) com [email concealed]]
Sent: Monday, February 16, 2004 6:39 AM
To: bugtraq (at) securityfocus (dot) com [email concealed]
Subject: Exploit based on leaked code released.

>From securitytracker

Microsoft Internet Explorer Integer Overflow in Processing Bitmap Files
Lets Remote Users Execute Arbitrary Code

SecurityTracker Alert ID: 1009067
CVE Reference: GENERIC-MAP-NOMATCH (Links to External Site)
Date: Feb 15 2004

Impact: Execution of arbitrary code via network, User access via

Exploit Included: Yes

Version(s): 5 (6 is reportedly not vulnerable)

Description: A vulnerability was reported in Microsoft Internet
Explorer (IE) version 5. A remote user can execute arbitrary code on the
target system.

It is reported that a remote user can create a specially crafted bitmap
file that, when loaded by IE, will trigger an integer overflow and
execute arbitrary code.

The author states that this flaw was found by reviewing the recently
leaked Microsoft Windows source code. The flaw reportedly resides in

The report indicates that IE 5 is affected but that IE 6 is not

A demonstration exploit is provided in the Source Message [it is Base64

Impact: A remote user can cause arbitrary code to be executed on the
target user's computer when the target user's browser loads a specially
crafted bitmap file. The code will run with the privileges of the target

Solution: No solution was available at the time of this entry.

Vendor URL: www.microsoft.com/technet/security/ (Links to External

Cause: Boundary error

Underlying OS: Windows (Any)

Reported By: <gta (at) hush (dot) com [email concealed]>

Message History: None.

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