Microsoft Security Bulletin: September 2007 Security Bulletin

September 11, 2007 - Qualys^® Vulnerability R&D Lab has released new vulnerability checks in QualysGuard^® to protect organizations against the 4 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 4 security patches to fix 4 newly discovered flaws in Microsoft Windows.

Qualys has released the following checks for these new vulnerabilities:

Vulnerability in Microsoft Agent Could Allow Remote Code Execution
SEVERITY: Urgent  5
QUALYS ID: 90408
VENDOR REFERENCE: MS07-051, 938827
CVE REFERENCE: CVE-2007-3040
CVSS SCORES: Base 5.1/ Temporal 3.8
THREAT: A remote code execution vulnerability exists in Microsoft Agent in the way that it handles certain specially crafted URLs.
IMPACT: The vulnerability could allow an attacker to remotely execute code on the affected system. 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 MS07-051 for further details on this vulnerability and patch instructions. Microsoft has rated this issue as Critical.

Vulnerability in Crystal Reports for Visual Studio Could Allow Remote Code Execution
SEVERITY: Critical  4
QUALYS ID: 90409
VENDOR REFERENCE: MS07-052, 941552
CVE REFERENCE: CVE-2007-6133
CVSS SCORES: Base 5.1/ Temporal 3.8
THREAT: A remote code execution vulnerability exists in the way Crystal Reports for Visual Studio handles malformed RPT files. An attacker could exploit the vulnerability by sending an affected user a malformed RPT file as an e-mail attachment, or hosting the file on a malicious or compromised Web site.
IMPACT: An attacker who successfully exploited this vulnerability could gain the same user rights as the local user.
SOLUTION: Refer to Microsoft security bulletin MS07-052 for further details on this vulnerability and instructions on installing the patch. Microsoft has rated this issue as Important.

Windows Services for UNIX Could Allow Elevation of Privilege
SEVERITY: Serious  3
QUALYS ID: 115630
VENDOR REFERENCE: MS07-053, 939778
CVE REFERENCE: CVE-2007- 3036
CVSS SCORES: Base 3.2/ Temporal 2.4
THREAT: An elevation of privilege vulnerability exists in Windows Services for UNIX 3.0, Windows Services for UNIX 3.5, and Subsystem for UNIX-based Applications due to incorrectly handling of setuid binary files.
IMPACT: An attacker could gain elevation of privilege on an affected system and take complete control.
SOLUTION: Refer to Microsoft Security Bulletin MS07-053 for further details on this vulnerability and patch instructions. Microsoft has rated this issue as Important.

MSN Messenger Video Conversation Buffer Overflow Vulnerability
SEVERITY: Critical  4
QUALYS ID: 115620
VENDOR REFERENCE: MS07-054, 942099
CVE REFERENCE: CVE-2007-2931
CVSS SCORES: Base 5.6/ Temporal 3.9
THREAT: A vulnerability exists in MSN Messenger, which can be exploited by malicious people to compromise a user's system. It is caused due to an error in the handling of video conversations, and can be exploited to cause a heap-based buffer overflow via specially crafted data sent to a user.
IMPACT: Successful exploitation may allow execution of arbitrary code, but requires that an unsuspecting user accepts the incoming Web Cam invitation.
SOLUTION: Upgrade to Windows Live Messenger Version 8.1 or later. Microsoft has rated this issue as Important.

This new vulnerability check is included in Qualys vulnerability signatures v1.18.49-5. 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:
   • 90408
   • 90409
   • 115630
   • 115620
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