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Secunia Advisory SA13465

Microsoft Windows Kernel and LSASS Privilege Escalation Vulnerabilities
Secunia Advisory SA13465
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Release Date 2004-12-14
Last Update 2005-01-11
   
Popularity 19,741 views
Comments 0 comments

Criticality level Less criticalLess critical
Impact Privilege escalation
Where Local system
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 NT 4.0 Server
Microsoft Windows NT 4.0 Server, Terminal Server Edition
Microsoft Windows Server 2003 Datacenter Edition
Microsoft Windows Server 2003 Enterprise Edition
Microsoft Windows Server 2003 Standard Edition
Microsoft Windows Server 2003 Web Edition
Microsoft Windows XP Home Edition
Microsoft Windows XP Professional
Secunia CVSS Score Available in Customer Area
CVE Reference(s) CVE-2004-0893 CVSS available in Customer Area
CVE-2004-0894 CVSS available in Customer Area
  

Description

Cesar Cerrudo has reported two vulnerabilities in Microsoft Windows, allowing malicious, local users to escalate their privileges.

1) The vulnerability is caused due to an unchecked buffer in the handling of data sent through a LPC (Local Procedure Call) port. This can be exploited to cause a buffer overflow and lead to execution of arbitrary code with elevated privileges.

2) The vulnerability is caused due to an error in the validation of identity tokens in LSASS (Local Security Authority Subsystem Service). This can be exploited to gain elevated privileges.


Solution
Apply patches.
Further details available in Customer Area

Provided and/or discovered by
Cesar Cerrudo, Application Security

Changelog
Further details available in Customer Area

Original Advisory
MS04-044 (KB885835):
http://www.microsoft.com/technet/security/bulletin/ms04-044.mspx

Application Security:
http://www.appsecinc.com/resources/alerts/general/06-0001.html
http://www.appsecinc.com/resources/alerts/general/07-0001.html

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 Windows Kernel and LSASS Privilege Escalation Vulnerabilities
 
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