Microsoft security alert.

Advisory overview

Qualys Vulnerability R&D Lab has released new vulnerability checks in the Qualys Cloud Platform to protect organizations against 5 vulnerabilities that were fixed in 2 bulletins announced today by Microsoft. Customers can immediately audit their networks for these and other new vulnerabilities by accessing their Qualys subscription. Visit Qualys Security Blog to prioritize remediation.

Non-Qualys customers can audit their network for these and other vulnerabilities by signing up for a Qualys Free Trial, or by trying Qualys Community Edition.

Vulnerability details

Microsoft has released 2 security bulletins to fix newly discovered flaws in their software. Qualys has released the following checks for these new vulnerabilities:

• Microsoft Windows Cumulative Update For Internet Explorer Missing (MS05-054)

  Severity

  Urgent 5

  Qualys ID

  100032

  Vendor Reference

  MS05-054

  CVE Reference

  CVE-2005-1790, CVE-2005-2829, CVE-2005-2830, CVE-2005-2831

  CVSS Scores

  Base 7.5 / Temporal 6.2

  Description

  The target Microsoft Windows system is missing an Internet Explorer cumulative patch described in Microsoft advisory MS05-054. This patch fixes four different security vulnerabilities:

  File Download Dialog Manipulation Vulnerability - CAN-2005-2829
  HTTPS Proxy Vulnerability - CAN-2005-2830
  COM Object Instantiation Memory Corruption Vulnerability - CAN-2005-2831
  Mismatched Document Object Model Objects Memory Corruption Vulnerability - CAN-2005-1790

  Public exploits are available for some of these vulnerabilities.

  Windows XP Embedded Systems:- For additional information regarding security updates for embedded systems, refer to the following MSDN blog(s):

  February Security Updates are Available (KB905915)
  

  Consequence

  A remote attacker could exploit this issue to take complete control of a vulnerable machine.

  Solution

  Patch:
  Following are links for downloading patches to fix the vulnerabilities:

  Internet Explorer 5.01 Service Pack 4 on Microsoft Windows 2000 Service Pack 4 :
  http://www.microsoft.com/downloads/details.aspx?FamilyId=4005B74A-D6E6-4A32-A3B1-276686B4A428

  Internet Explorer 6 Service Pack 1 on Microsoft Windows 2000 Service Pack 4 or on Microsoft Windows XP Service Pack 1 :
  http://www.microsoft.com/downloads/details.aspx?FamilyId=A8443CD2-D98D-427B-9F0E-BD7E19FCB994

  Internet Explorer 6 for Microsoft Windows XP Service Pack 2 :
  http://www.microsoft.com/downloads/details.aspx?FamilyId=E4B5BA57-D4F2-4798-9154-2869E371C9D1

  Internet Explorer 6 for Microsoft Windows Server 2003 and Microsoft Windows Server 2003 Service Pack 1 :
  http://www.microsoft.com/downloads/details.aspx?FamilyId=9D70FB20-C7C9-43AF-A864-6DBC9A542CC6

  Internet Explorer 6 for Microsoft Windows Server 2003 for Itanium based Systems and Microsoft Windows Server 2003 with SP1 for Itanium based Systems :
  http://www.microsoft.com/downloads/details.aspx?FamilyId=1EE790B9-E596-4344-AEC3-FCB3289D7E9C

  Internet Explorer 6 for Microsoft Windows Server 2003 x64 Edition :
  http://www.microsoft.com/downloads/details.aspx?FamilyId=8E9C23E5-7988-42DA-A8BD-2C1A534BF995

  Internet Explorer 6 for Microsoft Windows XP Professional x64 Edition :
  http://www.microsoft.com/downloads/details.aspx?FamilyId=E1652B4A-6339-4B31-8ACF-D2A844C24F70

  Refer to Microsoft Security Bulletin MS05-054 for further details.

• Windows Kernel Privilege Elevation Vulnerability (MS05-055)

  Severity

  Critical 4

  Qualys ID

  90286

  Vendor Reference

  MS05-055

  CVE Reference

  CVE-2005-2827

  CVSS Scores

  Base 7.2 / Temporal 6

  Description

  The target system is affected by a privilege elevation issue in the Windows kernel that was fixed in a patch included in Microsoft Security Bulletin MS05-055. Specifically, a privilege elevation vulnerability exists in the way that asynchronous procedure calls are processed within the Windows kernel.

  An attacker must have valid logon credentials and be able to log on locally to exploit this vulnerability. The vulnerability could not be exploited remotely or by anonymous users.

  Consequence

  This vulnerability could allow a logged on user to take complete control of the system.

  Solution

  Patch:
  Following are links for downloading patches to fix the vulnerabilities:

  Microsoft Windows 2000 Service Pack 4 :
  http://www.microsoft.com/downloads/details.aspx?FamilyId=3832FF23-6B04-4CA2-80B9-D344B4CC98EA

  Refer to Micrsoft Security Bulletin MS05-055 for further details.

Access for Qualys Customers

Platforms and Platform Identification

Technical Support

For more information, customers may contact Qualys Technical Support.

About Qualys

The Qualys Cloud Platform and its integrated suite of security and compliance applications provides organizations of all sizes with a global view of their security and compliance solutions, while drastically reducing their total cost of ownership. Qualys solutions include: continuous monitoring, vulnerability management, policy compliance, PCI compliance, security assessment questionnaire, web application scanning, web application firewall, malware detection and SECURE Seal for security testing of web sites.