Title: Microsoft ActiveX CAB File Execution Vulnerability
Severity: HIGH
Description:
A vulnerability in Internet Explorer, Outlook and Outlook Express allows remote malicious users to execute arbitrary code on the user's machine if Active Scripting is enabled. This can be exploited via a web page or an email.
A malicious user can create an executable file, compress it into a cab file, and rename it to have a file extension of any type automatically displayed by the client (e.g. .JPG, .GIF). He can then send this file as an attachment to an Outlook user as well as some active scripting (eg: JavaScript, VBscript). To display the attachment, Outlook will save it in a temporary location on the system. This temporary location is usually the default, and is well-known (C:\windows\temp\, C:\winnt\temp, etc.). The active scripting can then execute the attachment on the target machine, using the Active Setup ActiveX control.
Affected Products:
- Microsoft Internet Explorer 4.0.0
- Microsoft Internet Explorer 4.0.0 for Windows 95
- Microsoft Internet Explorer 4.0.0 for Windows NT 4.0
- Microsoft Internet Explorer 4.0.1
- Microsoft Internet Explorer 4.0.1 for Windows 98
- Microsoft Internet Explorer 4.0.1 for Windows NT 4.0
- Microsoft Internet Explorer 4.1.0 for Windows 95
- Microsoft Internet Explorer 4.1.0 for Windows 98
- Microsoft Internet Explorer 4.1.0 for Windows NT 4.0
- Microsoft Internet Explorer 5.0 for Windows 2000
- Microsoft Internet Explorer 5.0 for Windows 95
- Microsoft Internet Explorer 5.0 for Windows 98
- Microsoft Internet Explorer 5.0 for Windows NT 4.0
- Microsoft Outlook 2000 0.0.0
- Microsoft Outlook 98 0.0.0
- Microsoft Outlook Express 4.27.3110
- Microsoft Outlook Express 4.72.2106
- Microsoft Outlook Express 4.72.3120
- Microsoft Outlook Express 4.72.3612
- Microsoft Windows 95
- Microsoft Windows 98
- Microsoft Windows NT 4.0
References:
- Microsoft: Frequently Asked Questions: Microsoft Security Bulletin (MS99-048)
- Microsoft: Q244540 - Update Available for "Active Setup Control" Vulnerability
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