Microsoft security alert.
November 11, 2008
Advisory overview
Qualys Vulnerability R&D Lab has released new vulnerability checks in the Enterprise TruRisk Platform to protect organizations against 4 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:
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Microsoft SMB Could Allow Remote Code Execution (MS08-068)
- Severity
- Critical 4
- Qualys ID
- 90467
- Vendor Reference
- MS08-068
- CVE Reference
- CVE-2008-4037
- CVSS Scores
- Base 9.3 / Temporal 7.7
- Description
-
Microsoft Windows is prone to a vulnerability that could let attackers replay NTLM credentials over the SMB protocol. The security update addresses the vulnerability by modifying the way that SMB authentication replies are validated to prevent the replay of credentials. This vulnerability can be exploited via replay attacks to gain access with the privileges of the user whose credentials are being resent.
Microsoft has tested the following workarounds:-
1). Block TCP ports 139 and 445 at the firewall
Blocking TCP ports 139 and 445 at the firewall will help protect systems that are behind that firewall from attempts to exploit this vulnerability.
2). Enable SMB signing
Enabling SMB signing prevents the attacker from executing code in the context of the logged-on user.This vulnerability requires that a user with an affected version of SMB access a malicious server. An attacker would have to host a specially crafted server share or Web site. An attacker would have no way to force users to visit a specially crafted server share or Web site. Instead, an attacker would have to convince them to visit the server share or Web site, typically by getting them to click a link in an e-mail message or Instant Messenger message that takes them to the attacker's site.
Windows XP Embedded Systems:- For additional information regarding security updates for embedded systems, refer to the following MSDN blog(s):
December 2008 Updates are Available (including for XPe SP3 and Standard) (KB957097)
- Consequence
- An attacker who successfully exploits this vulnerability could 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
-
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=44c971e6-96fc-4bba-8f4a-f9d46bda2b6cWindows XP Service Pack 2:
http://www.microsoft.com/downloads/details.aspx?familyid=6f8ae0aa-fd68-4156-9016-bba00149793cWindows XP Service Pack 3:
http://www.microsoft.com/downloads/details.aspx?familyid=6f8ae0aa-fd68-4156-9016-bba00149793cWindows XP Professional x64 Edition and Windows XP Professional x64 Edition Service Pack 2:
http://www.microsoft.com/downloads/details.aspx?familyid=9501b33b-d639-43e7-ad5a-9e76ed66effdWindows Server 2003 Service Pack 1 and Windows Server 2003 Service Pack 2:
http://www.microsoft.com/downloads/details.aspx?familyid=57a0606d-ea7a-4e5b-8b8b-7b77a444ef75Windows Server 2003 x64 Edition and Windows Server 2003 x64 Edition Service Pack 2:
http://www.microsoft.com/downloads/details.aspx?familyid=915e001f-9aa0-4fb0-9c2a-0f0c72b4f056Windows Server 2003 with SP1 for Itanium-based Systems and Windows Server 2003 with SP2 for Itanium-based Systems:
http://www.microsoft.com/downloads/details.aspx?familyid=6abf7ba9-825f-4ee2-a2fe-6b1cd9fab622Windows Vista and Windows Vista Service Pack 1:
http://www.microsoft.com/downloads/details.aspx?familyid=5612815f-8685-45d2-af4a-164c298a0869Windows Vista x64 Edition and Windows Vista x64 Edition Service Pack 1:
http://www.microsoft.com/downloads/details.aspx?familyid=727ce9b6-827f-4350-b4ff-c08e8ac541a6Windows Server 2008 for 32-bit Systems:
http://www.microsoft.com/downloads/details.aspx?familyid=b305e894-61ec-46b4-91ee-4c9ac59bc47eWindows Server 2008 for x64-based Systems:
http://www.microsoft.com/downloads/details.aspx?familyid=e8d26dfd-b347-4f10-b5b6-27dfff5e4f47Windows Server 2008 for Itanium-based Systems:
http://www.microsoft.com/downloads/details.aspx?familyid=d565467d-e10f-4ddc-a278-3f81a3798686Refer to Micrsoft Security Bulletin MS08-068 for further details.
-
Microsoft XML Core Services Remote Code Execution Vulnerability (MS08-069)
- Severity
- Urgent 5
- Qualys ID
- 90466
- Vendor Reference
- MS08-069
- CVE Reference
- CVE-2007-0099, CVE-2008-4029, CVE-2008-4033
- CVSS Scores
- Base 9.3 / Temporal 7.3
- Description
-
This security update resolves several vulnerabilities in Microsoft XML Core Services. The most severe vulnerability could allow remote code execution if a user views a specially-crafted Web page using Internet Explorer. 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.
Windows XP Embedded Systems:- For additional information regarding security updates for embedded systems, refer to the following MSDN blog(s):
December 2008 Updates are Available (including for XPe SP3 and Standard) (KB955069)
- Consequence
- An attacker who successfully exploits this vulnerability could take complete control of the affected system.
- Solution
-
Patch:
Following are links for downloading patches to fix the vulnerabilities:Microsoft Windows 2000 Service Pack 4 (Microsoft XML Core Services 3.0):
http://www.microsoft.com/downloads/details.aspx?FamilyId=559cd4b6-24b7-4e60-8749-37d9b833d3ebMicrosoft Windows 2000 Service Pack 4 (Microsoft XML Core Services 4.0):
http://www.microsoft.com/downloads/details.aspx?FamilyId=96a4413c-5261-4f69-83d0-932c430abd14Microsoft Windows 2000 Service Pack 4 (Microsoft XML Core Services 6.0):
http://www.microsoft.com/downloads/details.aspx?FamilyId=59914795-60c7-4ebe-828d-f28cb457e6e3Windows XP Service Pack 2 (Microsoft XML Core Services 3.0):
http://www.microsoft.com/downloads/details.aspx?FamilyId=6ed1a087-97e2-4283-9b53-b7b046654d08Windows XP Service Pack 3 (Microsoft XML Core Services 3.0):
http://www.microsoft.com/downloads/details.aspx?FamilyId=6ed1a087-97e2-4283-9b53-b7b046654d08Windows XP Service Pack 2 and Windows XP Service Pack 3 (Microsoft XML Core Services 4.0):
http://www.microsoft.com/downloads/details.aspx?FamilyId=96a4413c-5261-4f69-83d0-932c430abd14Windows XP Service Pack 2 (Microsoft XML Core Services 6.0):
http://www.microsoft.com/downloads/details.aspx?FamilyId=59914795-60c7-4ebe-828d-f28cb457e6e3Windows XP Service Pack 3 (Microsoft XML Core Services 6.0):
http://www.microsoft.com/downloads/details.aspx?FamilyId=7493fa37-2cbf-4d66-8690-d50d63da4096Windows XP Professional x64 Edition and Windows XP Professional x64 Edition Service Pack 2 (Microsoft XML Core Services 3.0):
http://www.microsoft.com/downloads/details.aspx?FamilyId=1b79f220-ebfc-49c1-963b-58bbda21b6e7Windows XP Professional x64 Edition and Windows XP Professional x64 Edition Service Pack 2 (Microsoft XML Core Services 4.0):
http://www.microsoft.com/downloads/details.aspx?FamilyId=96a4413c-5261-4f69-83d0-932c430abd14Windows XP Professional x64 Edition and Windows XP Professional x64 Edition Service Pack 2 (Microsoft XML Core Services 6.0):
http://www.microsoft.com/downloads/details.aspx?FamilyId=59914795-60c7-4ebe-828d-f28cb457e6e3For a complete list of patch download links, please refer to Micrsoft Security Bulletin MS08-069.
These new vulnerability checks are included in Qualys vulnerability signature 1.22.53-3. Each Qualys account is automatically updated with the latest vulnerability signatures as they become available. To view the vulnerability signature version in your account, from the Qualys Help menu, select the About tab.
Selective Scan Instructions Using Qualys
To perform a selective vulnerability scan, configure a scan profile to use the following options:
- Ensure access to TCP ports 135 and 139 are available.
- Enable Windows Authentication (specify Authentication Records).
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Enable the following Qualys IDs:
- 90467
- 90466
- If you would like the scan to return the Windows Hostname, also include QID 82044 and ensure access to UDP port 137 is available.
- If you would like to be notified if Qualys is unable to log on 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 Analysis Report, available from the Qualys Vulnerability Management Reports tab.
Access for Qualys Customers
Platforms and Platform Identification
Technical Support
For more information, customers may contact Qualys Technical Support.
About Qualys
The Enterprise TruRisk 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.