Microsoft released seven security updates for May, rating all seven as critical. Here's a brief description of each update; for more information, go to
http://www.microsoft.com/technet/security/bulletin/ms07-may.mspx
MS07-023: Vulnerabilities in Microsoft Excel Could Allow Remote Code Execution
This update addresses several vulnerabilities in all versions of Excel that could be used to compromise a computer through the execution of remote code. This bulletin replaces MS07-002.
Applies to: All versions of Excel and Office 2004 for Macintosh.
Recommendation: Although Microsoft rates this update as critical, because the vulnerabilities haven't been publicly disclosed, you can test and deploy this update as a part of your patch management routine.
MS07-024: Vulnerabilities in Microsoft Word Could Allow Remote Code Execution
This update addresses several newly discovered and publicly disclosed vulnerabilities in most versions of Word. This bulletin replaces MS07-014.
Applies to: All versions of Word (except Word 2007) and Microsoft Works Suites.
Recommendation: Given that several of the vulnerabilities the update addresses have been made public, you should perform accelerated testing and deployment of this update.
MS07-025: Vulnerability in Microsoft Office Could Allow Remote Code Execution
This update addresses several privately disclosed vulnerabilities in most versions of Office. This bulletin replaces bulletin MS07-15.
Applies to: Office 2000/XP/2003/2007/SharePoint Designer 2007/2004 for Mac and Microsoft Expression Web.
Recommendation: Although Microsoft rates the vulnerability as critical, the vulnerability hasn't been publicly disclosed, so you can test and deploy this update as a part of your normal patch management routine.
MS07-026: Vulnerabilities in Microsoft Exchange Could Allow Remote Code Execution
This update addresses several newly discovered privately reported vulnerabilities in Exchange 2000 Server, Exchange Server 2003 and Exchange Server 2007. This bulletin replaces MS06-19 and MS06-29.
Applies to: Exchange 2000/2003/2007.
Recommendation: Although at the time the bulletin was published the vulnerabilities it addressed hadn't been publicly disclosed, Exchange forms such a critical part of many organizations' network infrastructure that you should perform thorough testing and deploy as expeditiously as possible.
MS07-027: Cumulative Security Update for Internet Explorer
This update addresses several vulnerabilities across all versions of Internet Explorer (IE). This bulletin replaces MS07-016.
Applies to: All versions of IE including IE 7.0 in Windows Vista.
Recommendation: Because the update addresses several publicly disclosed remote code exploit vulnerabilities, you should perform accelerated testing and deployment of this update.
MS07-028: Vulnerability in CAPICOM Could Allow Remote Code Execution
This update addresses vulnerabilities in CAPICOM and BizTalk Server 2004. Other versions of BizTalk, such as BizTalk 2000/2002/2006, don't have these vulnerabilities.
Applies to: CAPICOM and BizTalk Server 2004.
Recommendation: The vulnerability has been privately, rather than publicly, disclosed. If your organization uses these products, you should test thoroughly and apply.
MS07-029: Vulnerability in Windows DNS RPC Interface Could Allow Remote Code Execution
This update addresses a publicly disclosed vulnerability in the DNS server service, which runs only on server OSs. An attacker who takes advantage of this vulnerability could take control of the server.
Applies to: Windows 2000 Server and Windows Server 2003.
Recommendation: This update addresses a publicly disclosed critical vulnerability in a core infrastructure service. Test and deploy as soon as possible.
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