Title: Microsoft IE Virtual Machine Sandbox Vulnerability
Severity: CRITICAL
Description:
The Microsoft Virtual Machine (VM) that ships with Win9X, NT and Internet Explorer 4.X and 5.0 contains a vulnerability that may allow a hostile Java applet to escape the bounds of its "sandbox" and perform malicious activities on the victim host. These activities may result in a privilege escalation or other harmful activities including, under certain circumstances: adding, modifying or deleting user accounts and groups, deleting files, formatting the hard drive, and copying data off of the victim host.
This vulnerability may occur when a Microsoft IE client visits a web site that hosts a hostile java applet. Disabling the execution of java applets from within the IE client may prevent this vulnerability from occuring.
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 4.1.0 for Windows 95
- Microsoft Internet Explorer 4.1.0 for Windows NT 4.0
- 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 Visual Studio 6.0
- Microsoft Windows 95
- Microsoft Windows 98
- Microsoft Windows NT 4.0
References:
- Microsoft: Frequently Asked Questions: Microsoft Security Bulletin (MS99-031)
- Microsoft: Q240346: Malicious Java Applet may be able to Read, Write, or Delete Files on th
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