Microsoft Security Bulletin: April 2008 Security Bulletin

April 8, 2008 - Qualys^® Vulnerability R&D Lab has released new vulnerability checks in QualysGuard^® to protect organizations against the 8 new vulnerabilities present in Microsoft Windows that were announced today. Customers can immediately audit their networks for these and other new vulnerabilities by accessing their QualysGuard subscription.

Microsoft has released 8 security patches to fix newly discovered flaws in Microsoft Windows.

Qualys has released the following checks for these new vulnerabilities:

Microsoft Project Could Allow Remote Code Execution
SEVERITY: Critical  4
QUALYS ID: 110077
VENDOR REFERENCE: MS08-018
CVE REFERENCE: CVE-2008-1088
CVSS SCORES: Base 7.5/ Temporal 5.5
THREAT: Microsoft Project is a project management software program to assist project managers. The application is prone to a remote code execution issue due to insufficent validation of memory resources when opening Project files.
IMPACT: An attacker who successfully exploits this vulnerability could run arbitrary code on the affected system as the logged on user.
SOLUTION: Refer to Microsoft Security Bulletin MS08-018 for further details and patch information. Microsoft has rated this issue as Critical.

Microsoft Visio Could Allow Remote Code Execution
SEVERITY: Critical  4
QUALYS ID: 110078
VENDOR REFERENCE: MS08-019
CVE REFERENCE: CVE-2008-1089,CVE-2008-1090
CVSS SCORES: Base 7.5/ Temporal 5.5
THREAT: Microsoft Visio is diagramming software. The application is prone multiple remote code execution vulnerabilities. The security update addresses the following issues: Memory validation issue when loading specially-crafted .DXF files from disk into memory. Object header validation issue due to improper validation of object header data when opening Visio files.
IMPACT: An attacker who successfully exploits this vulnerability could run arbitrary code on the affected system as the logged on user.
SOLUTION: Refer to Microsoft Security Bulletin MS08-019 for further details and patch information. Microsoft has rated this issue as Important.

Microsoft Vulnerability in DNS Client Could Allow Spoofing
SEVERITY: Critical  4
QUALYS ID: 90432
VENDOR REFERENCE: MS08-020
CVE REFERENCE: CVE-2008-0087
CVSS SCORES: Base 6.9/ Temporal 5.4
THREAT: This is an important security update which addresses a privately reported vulnerability in Windows DNS clients which could allow spoofing in Windows Vista, Microsoft Windows 2000, Windows XP, and Windows Server 2003.
IMPACT: Successful exploitation could allow an attacker to send specially crafted responses to DNS requests, thereby spoofing or redirecting Internet traffic from legitimate locations.
SOLUTION: Refer to Microsoft Security Bulletin MS08-020 for further information and patch instructions. Microsoft has rated this issue as Important.

GDI Could Allow Remote Code Execution
SEVERITY: Critical  4
QUALYS ID: 90434
VENDOR REFERENCE: MS08-021
CVE REFERENCE: CVE-2008-1083, CVE-2008-1087
CVSS SCORES: Base 7.6/ Temporal 5.6
THREAT: A remote code execution vulnerability exists in the way that GDI handles integer calculations. Another remote code execution vulnerability exists in the way that GDI handles filename parameters in EMF files.
IMPACT: The vulnerability could allow remote code execution if a user opens a specially crafted EMF or WMF image file.
SOLUTION: Refer to Microsoft Security Bulletin MS08-021 for further details on this vulnerability and patch instructions. Microsoft has rated this issue as Critical.

VBScript and JScript Scripting Engines Could Allow Remote Code Execution
SEVERITY: Critical  4
QUALYS ID: 90431
VENDOR REFERENCE: MS08-022
CVE REFERENCE: CVE-2008-0083
CVSS SCORES: Base 6.8/ Temporal 5.3
THREAT: This security update resolves a privately reported vulnerability in the VBScript and JScript scripting engines in Windows. A remote code execution vulnerability exists in the way that the VBScript and JScript scripting engines decode script in Web pages. This vulnerability can be exploited when a user opens a specially crafted file or visits a Web site that is running specially crafted script.
IMPACT: If a user is logged on with administrative user rights, an attacker could take complete control of an affected system. A user may exploit this vulnerability to install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.
SOLUTION: This security update addresses the vulnerability by modifying the way that the VBScript and JScript engines decode script in Web pages. Refer to Microsoft Security Bulletin MS08-022 to address this issue. Microsoft has rated this issue as Critical.

Microsoft Security Update of ActiveX Kill Bits
SEVERITY: Critical  4
QUALYS ID: 90433
VENDOR REFERENCE: MS08-023
CVE REFERENCE: CVE-2008-1086
CVSS SCORES: Base 6.8/ Temporal 5.3
THREAT: A remote code execution vulnerability exists in the ActiveX control hxvz.dll. This update also includes a kill bit for the Yahoo! Music Jukebox product. The vulnerability could allow remote code execution if a user viewed a specially crafted Web page using Internet Explorer.
IMPACT: An attacker could exploit the vulnerability by constructing a specially crafted Web page. When a user views the Web page, the vulnerability could allow remote code execution. An attacker who successfully exploits this vulnerability could gain the same user rights as the logged on user. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.
SOLUTION: Refer to Microsoft Security Bulletin MS08-023 for further details on this vulnerability and patch instructions. Microsoft has rated this issue as Critical.

Internet Explorer Cumulative Security Update
SEVERITY: Critical  4
QUALYS ID: 100056
VENDOR REFERENCE: MS08-024
CVE REFERENCE: CVE-2008-1085
CVSS SCORES: Base 7.6/ Temporal 5.6
THREAT: A remote code execution vulnerability exists in Internet Explorer because of the way that it processes data streams.
IMPACT: The attacker can execute remote code using a specially crafted Web page.
SOLUTION: Refer to Microsoft Security Bulletin MS08-024 for further details on this vulnerability, including a list of affected and non-affected software. Microsoft has rated this issue as Critical.

Windows Kernel Vulnerability Could Allow Elevation of Privilege
SEVERITY: Critical  4
QUALYS ID: 90430
VENDOR REFERENCE: MS08-025
CVE REFERENCE: CVE-2008-1084
CVSS SCORES: Base 6.8 / Temporal 5.3
THREAT: This security update resolves a privately reported vulnerability in the Windows kernel. An attacker who exploits this vulnerability can be allowed to gain complete control of the affected system.
IMPACT: An attacker may exploit this vulnerability to install programs; view, change, or delete data; or create new accounts.
SOLUTION: Refer to Microsoft Security Bulletin MS08-025 to address this issue. Microsoft has rated this issue as Important.

This new vulnerability check is included in Qualys vulnerability signatures v1.19.108-4. 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:
   • 90434
   • 100056
   • 110078
   • 90433
   • 110077
   • 90432
   • 90431
   • 90430
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.

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

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

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