Microsoft Security Bulletin: November 2007 Security Bulletin

November 13, 2007 - Qualys^® Vulnerability R&D Lab has released new vulnerability checks in QualysGuard^® to protect organizations against the 2 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 2 security patches to fix 2 newly discovered flaws in Microsoft Windows.

Qualys has released the following checks for these new vulnerabilities:

URL Handling Vulnerability Could Allow Remote Code Execution
SEVERITY: Urgent  5
QUALYS ID: 100053
VENDOR REFERENCE: MS07-061, 941672
CVE REFERENCE: CVE-2007-3896
CVSS SCORES: Base 9.3/ Temporal 8.4
THREAT: Microsoft Windows XP and Windows Server 2003 is vulnerable to a remote code execution issue due to insufficient handling of invalid "%" sequences in "mailto:" and other URI handlers. The vulnerability exists in the Windows file, Shell32.dll, which is included in all supported editions of Windows XP and Windows Server 2003. Previously this was a Zero Day detection.
IMPACT: An attacker could attempt to leverage this vulnerability by embedding a specifically crafted URI or URL into an application, and then convince a user to perform an action that would trigger the vulnerability. This may allow attackers to execute arbitrary code.
SOLUTION: Refer to Microsoft Security Bulletin MS07-061 for further details on this vulnerability and patch instructions. Microsoft has rated this issue as Critical.

Vulnerability in DNS Could Allow Spoofing
SEVERITY: Serious  3
QUALYS ID: 90415
VENDOR REFERENCE: MS07-062, 943460
CVE REFERENCE: CVE-2007-3898
CVSS SCORES: Base 2.9/ Temporal 2.2
THREAT: A spoofing vulnerability exists in Windows DNS Servers.
IMPACT: The vulnerability could allow non-privileged users to send malicious responses to DNS requests, thereby spoofing or redirecting Internet traffic from legitimate locations.
SOLUTION: Refer to Microsoft Security Bulletin MS07-062 for further details on this vulnerability and patch instructions. Microsoft has rated this issue as Important.

This new vulnerability check is included in Qualys vulnerability signatures v1.18.101-3. 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:
   • 100053
   • 90415
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

Free trial of QualysGuard service: http://www.qualys.com/solutions/free/trials