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Advisories!: Microsoft Security Bulletin MS06-001: Official WMF Patch |
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This update resolves a newly-discovered, public vulnerability. The vulnerability is documented in the "Vulnerability Details" section of this bulletin.
Note This vulnerability is currently being exploited and was previously discussed by Microsoft in Microsoft Security Advisory 912840.
If a user is logged on with administrative user rights, an attacker who successfully exploited 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. 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.
We recommend that customers apply the update immediately.
The bulletin continues with some basic questions and answers:
Does this update contain any security-related changes to functionality?
Yes. The change introduced to address this vulnerability removes the support for the SETABORTPROC record type from the META_ESCAPE record in a WMF image. This update does not remove support for ABORTPROC functions registered by application SetAbortProc() API calls.
Are Windows 98, Windows 98 Second Edition, or Windows Millennium Edition critically affected by one or more of the vulnerabilities that are addressed in this security bulletin?
No. Although Windows 98, Windows 98 Second Edition, and Windows Millennium Edition do contain the affected component, the vulnerability is not critical because an exploitable attack vector has not been identified that would yield a Critical severity rating for these versions.
Graphics Rendering Engine Vulnerability - CVE-2005-4560:
A remote code execution vulnerability exists in the Graphics Rendering Engine because of the way that it handles Windows Metafile (WMF) images. An attacker could exploit the vulnerability by constructing a specially crafted WMF image that could potentially allow remote code execution if a user visited a malicious Web site or opened a specially crafted attachment in e-mail. An attacker who successfully exploited this vulnerability could take complete control of an affected system.
Mitigating Factors for Graphics Rendering Engine Vulnerability - CVE-2005-4560:
• In a Web-based attack scenario, an attacker could host a Web site that contains a Web page that is used to exploit this vulnerability. Also, Web sites that accept or host user-provided content or advertisements, and compromised Web sites, may contain malicious content that could exploit this vulnerability. In all cases, however, an attacker would have no way to force users to visit these Web sites. Instead, an attacker would have to persuade users to visit the Web site, typically by getting them to click a link in an e-mail or Instant Messenger request that takes users to the attacker's Web site.
• An attacker who successfully exploited this vulnerability could gain the same user rights as the local 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.
For specific details on the installation parameters (switches and descriptions), visit here and click open "Vulnerability Details" | "Security Update Information" and then select the operating system. There is quite a detailed list.
Download official MS Patch
Affected Software:
• Microsoft Windows 2000 Service Pack 4 – Download the update
• Microsoft Windows XP Service Pack 1 and Microsoft Windows XP Service Pack 2 – Download the update
• Microsoft Windows XP Professional x64 Edition – Download the update
• Microsoft Windows Server 2003 and Microsoft Windows Server 2003 Service Pack 1 – Download the update
• Microsoft Windows Server 2003 for Itanium-based Systems and Microsoft Windows Server 2003 with SP1 for Itanium-based Systems – Download the update
• Microsoft Windows Server 2003 x64 Edition – Download the update
Alternatively, access windowsupdate.microsoft.com.
Note: So what to do now with the workaround patches now that you have installed Microsoft's official patch? Check the WMF Exploit FAQ for the answer.
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