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Microsoft Virtual Machine Bytecode Verifier Vulnerability
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Secunia Advisory:
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SA8559
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Release Date:
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2003-04-09
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Popularity:
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14,154 views
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Critical:
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Highly critical
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Impact:
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System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| OS: | Microsoft Windows 2000 Advanced Server
Microsoft Windows 2000 Datacenter Server
Microsoft Windows 2000 Professional
Microsoft Windows 2000 Server
Microsoft Windows 98
Microsoft Windows 98 Second Edition
Microsoft Windows Millenium
Microsoft Windows NT 4.0 Server
Microsoft Windows NT 4.0 Server, Terminal Server Edition
Microsoft Windows NT 4.0 Workstation
Microsoft Windows XP Home Edition
Microsoft Windows XP Professional
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| CVE reference: | CVE-2003-0111
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Description:
A vulnerability identified in Microsoft VM (Virtual Machine) shipped with almost all versions of Windows (except some versions of Windows XP) can be exploited by malicious people to compromise a user's system.
The vulnerability is caused by an input validation error in the ByteCode Verifier, since it doesn't check for certain malicious sequences of byte codes when loading Java applets. This can be exploited by crafting a special Java applet and include it in web page, which can either be hosted on a website or sent directly to a user in an email.
When a user on a vulnerable system views the malicious web page, the Java applet will be able to execute arbitrary code on the user's system with the user's privileges.
In the email scenario, the vulnerability can be exploited automatically to execute arbitrary code on the user's system when the malicious email is viewed. However, this is not possible if the user is viewing the malicious email in Outlook Express 6.0 or Outlook 2002 in their default configurations, or Outlook 98 or Outlook 2000 in conjunction with the Outlook Email Security Update.
To check the version number of the installed Microsoft VM:
1) Type "Jview" at the command line.
2) Look at the four last digits of the version number at the topmost line.
Though not confirmed, this vulnerability may be related to an older issue:
http://secunia.com/advisories/7587/
http://secunia.com/advisories/7651/
Solution:
Update Microsoft VM to version 3810 or later.
The latest version can be installed via Windows Update. Customers using Windows 2000 can also choose to install it manually:
-- Windows 2000 (any version with SP2 or SP3) --
All except Japanese NEC:
http://microsoft.com/downloads/detail...-9A07-6C740F162644&displaylang=en
Japanese NEC:
http://microsoft.com/downloads/detail...-B3A0-F3F1184CF2F6&displaylang=ja
Original Advisory:
http://www.microsoft.com/technet/security/bulletin/MS03-011.asp
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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