Microsoft Security Bulletin MS08-047 - Important
Vulnerability in IPsec Policy Processing Could Allow Information Disclosure (953733)
Published: | Updated:
This update resolves a privately reported vulnerability in the way certain Windows Internet Protocol Security (IPsec) rules are applied. This vulnerability could cause systems to ignore IPsec policies and transmit network traffic in clear text. This, in turn, would disclose information intended to be encrypted on the network. An attacker viewing the traffic on the network would be able to view and possibly modify the contents of the traffic. Note that this vulnerability would not allow an attacker to execute code or to elevate their user rights directly. It could be used to collect useful information to try to further compromise the affected system or network.
This update is rated Important for all supported versions of Windows Vista and Windows Server 2008. For more information, see the subsection, Affected and Non-Affected Software, in this section.
The security update addresses the vulnerability by ensuring that IPsec rules are processed appropriately. For more information about the vulnerability, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information.
Recommendation. Microsoft recommends that customers apply the update at the earliest opportunity.
Known Issues. None
The following software have been tested to determine which versions or editions are affected. Other versions or editions are either past their support life cycle or are not affected. To determine the support life cycle for your software version or edition, visit Microsoft Support Lifecycle.
|Operating System||Maximum Security Impact||Aggregate Severity Rating||Bulletins Replaced by this Update|
|Windows Vista and Windows Vista Service Pack 1||Information Disclosure||Important||None|
|Windows Vista x64 Edition and Windows Vista x64 Edition Service Pack 1||Information Disclosure||Important||None|
|Windows Server 2008 for 32-bit Systems*||Information Disclosure||Important||None|
|Windows Server 2008 for x64-based Systems*||Information Disclosure||Important||None|
|Windows Server 2008 for Itanium-based Systems||Information Disclosure||Important||None|
*Windows Server 2008 server core installation affected. For supported editions of Windows Server 2008, this update applies, with the same severity rating, whether or not Windows Server 2008 was installed using the Server Core installation option. For more information on this installation option, see Server Core. Note that the Server Core installation option does not apply to certain editions of Windows Server 2008; see Compare Server Core Installation Options.
|Windows 2000 Service Pack 4|
|Windows XP Service Pack 2 and Windows XP Service Pack 3|
|Windows XP Professional x64 Edition and Windows XP Professional x64 Edition Service Pack 2|
|Windows Server 2003 Service Pack 1 and Windows Server 2003 Service Pack 2|
|Windows Server 2003 x64 Edition and Windows Server 2003 x64 Edition Service Pack 2|
|Windows Server 2003 with SP1 for Itanium-based Systems and Windows Server 2003 with SP2 for Itanium-based Systems|
- Customers in the U.S. and Canada can receive technical support from Microsoft Product Support Services at 1-866-PCSAFETY. There is no charge for support calls that are associated with security updates.
- International customers can receive support from their local Microsoft subsidiaries. There is no charge for support that is associated with security updates. For more information about how to contact Microsoft for support issues, visit the International Support Web site.
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- V1.0 (August 12, 2008): Bulletin published.
- V1.1 (August 13, 2008): Added Windows XP Professional x64 Edition and Windows XP Professional x64 Edition Service Pack 2 to the Non-Affected Software table.