January 12, 2010
Microsoft Security Bulletin: January 12
Advisory Overview

January 12, 2010 - Qualys® Vulnerability R&D Lab has released new vulnerability checks in QualysGuard® to protect organizations against 1 vulnerability present in Microsoft Windows that was announced today. Customers can immediately audit their networks for these and other new vulnerabilities by accessing their QualysGuard subscription.

Vulnerability Details

Microsoft has released 1 security patches to fix newly discovered flaws in Microsoft Windows.

Qualys has released the following checks for these new vulnerabilities:


Microsoft Embedded OpenType Font Engine Remote Code Execution Vulnerability
SEVERITY: Urgent Urgent-5 5
QUALYS ID: 90575
VENDOR REFERENCE: MS10-001
CVE REFERENCE: CVE-2010-0018
CVSS SCORES: Base 9.3/ Temporal 6.9
THREAT: Embedded OpenType (EOT) fonts are a compact form of fonts used for embedding in documents or on Web pages. These fonts may be embedded in certain document formats, such as Word .doc files, or incorporated into Web pages using links to an .eot file located on a Web server.

A remote code execution vulnerability exists in the way that the Microsoft Windows Embedded OpenType (EOT) Font Engine decompresses specially crafted EOT fonts.

Microsoft security update corrects Microtype Express Compressed Fonts Integer Flaw in the LZCOMP Decompressor. (CVE-2010-0018)

This security update is rated Critical for Microsoft Windows 2000, and is rated Low for Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008, Windows 7 and Windows Server 2008 R2.

IMPACT: An attacker who successfully exploits this vulnerability could take complete control of an affected system.

An attacker could then install programs, view, change, or delete data, or create new accounts with full user rights.

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

Microsoft Windows 2000 Service Pack 4

Windows XP Service Pack 2 and Windows XP Service Pack 3

Windows XP Professional x64 Edition Service Pack 2

Windows Server 2003 Service Pack 2

Windows Server 2003 x64 Edition Service Pack 2

Windows Server 2003 with SP2 for Itanium-based Systems

Windows Vista, Windows Vista Service Pack1, and Windows Vista Service Pack 2

Windows Vista x64 Edition, Windows Vista x64 Edition Service Pack 1, and Windows Vista x64 Edition Service Pack 2

Windows Server 2008 for 32-bit Systems and Windows Server 2008 for 32-bit Systems Service Pack 2

Windows Server 2008 for x64-based Systemsand Windows Server 2008 for x64-based Systems Service Pack 2

Windows Server 2008 for Itanium-based Systems and Windows Server 2008 for Itanium-based Systems Service Pack 2

Windows 7 for 32-bit Systems

Windows 7 for x64-based Systems

Windows Server 2008 R2 for x64-based Systems

Windows Server 2008 R2 for Itanium-based Systems

Refer to Microsoft Security Bulletin MS10-001 for further details.

Workaround:
1) Disable support for parsing embedded fonts in Internet Explorer. This can be done using the Interactive Method, Group Policy or a Managed Deployment Script.

Impact of workaround: Web sites making use of embedded font technology will fail to display properly.

2) Deny Access to T2EMBED.DLL

Impact of workaround: Applications that rely on embedded font technology will fail to display properly.

For detailed steps on enabling and disabling the workarounds, refer to Microsoft Security Bulletin MS10-001.

This new vulnerability check is included in Qualys vulnerability signatures v1.24.99-3. Each QualysGuard account is automatically updated with the latest vulnerability signatures as they become available. To view the vulnerability signature version in your account, from the QualysGuard HOME menu, select the Account Info tab.

SELECTIVE SCAN INSTRUCTIONS USING QUALYSGUARD:

To perform a selective vulnerability scan, configure a scan profile to use the following options:

  1. Ensure access to TCP ports 135 and 139 are available.
  2. Enable Windows Authentication (specify Authentication Records).
  3. Enable the following Qualys IDs:
    • 90575
  4. If you would like the scan to return the Windows Hostname, also include QID 82044 and ensure access to UDP port 137 is available.
  5. If you would like to be notified if QualysGuard is unable to logon to a host (if Authentication fails), also include QID 105015.

In addition, prior to running a scan for these new vulnerabilities, you can estimate your exposure to these new threats by running the Risk Matrix Report, available from the QualysGuard HOME page.


Technical Support
For more information, customers may contact Qualys Technical Support directly at support@qualys.com or by telephone toll free at:
US: 1 866.801.6161 | EMEA: 33 1 44.17.00.41 | UK: +44 1753 872102
About QualysGuard
QualysGuard is an on-demand security audit service delivered over the web that enables organizations to effectively manage their vulnerabilities and maintain control over their network security with centralized reports, verified remedies, and full remediation workflow capabilities with trouble tickets. QualysGuard provides comprehensive reports on vulnerabilities including severity levels, time to fix estimates and impact on business, plus trend analysis on security issues. By continuously and proactively monitoring all network access points, QualysGuard dramatically reduces security managers' time researching, scanning and fixing network exposures and enables companies to eliminate network vulnerabilities before they can be exploited.

Access for QualysGuard customers: https://qualysguard.qualys.com

Free trial of QualysGuard service: http://www.qualys.com/forms/trials/qualysguard_trial/