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Insecure Library Loading

Secunia Advisory SA8559

Microsoft Virtual Machine Bytecode Verifier Vulnerability
Secunia Advisory SA8559
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Release Date 2003-04-09
   
Popularity 18,688 views
Comments 0 comments

Criticality level Highly criticalHighly critical
Impact System access
Where From remote
Authentication level Available in Customer Area
   
Report reliability Available in Customer Area
Solution Status Vendor Patch
   
Systems affected Available in Customer Area
Approve distribution Available in Customer Area
Remediation status Secunia CSI, Secunia PSI
Automated scanning Secunia CSI, Secunia PSI
   
Operating System
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

Secunia CVSS Score Available in Customer Area
CVE Reference(s) CVE-2003-0111 CVSS available in Customer Area
  

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.
Further details available in Customer Area

Original Advisory
http://www.microsoft.com/technet/security/bulletin/MS03-011.asp

Deep Links
Links available in Customer Area


Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Microsoft Virtual Machine Bytecode Verifier Vulnerability
 
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