Objavljena je nadogradnja programskog paketa Internet Explorer koja ispravlja višestruke sigurnosne ranjivosti. Neke od njih zlonamjernim korisnicima omogućuju izvršavanje proizvoljnog programskog koda i pregled određenih podataka.
| Paket: | Microsoft Internet Explorer 6.x, Microsoft Internet Explorer 7.x, Microsoft Internet Explorer 8.x, Microsoft Internet Explorer 9.x |
| Operacijski sustavi: | Microsoft Windows 2000, Microsoft Windows XP, Microsoft Windows Server 2003, Microsoft Windows Vista, Microsoft Windows Server 2008, Microsoft Windows 7 |
| Kritičnost: | 6.9 |
| Problem: | neodgovarajuća provjera ulaznih podataka, neodgovarajuće rukovanje memorijom, pogreška u programskoj komponenti |
| Posljedica: | otkrivanje osjetljivih informacija, proizvoljno izvršavanje programskog koda |
| CVE: | CVE-2011-1246, CVE-2011-1250, CVE-2011-1251, CVE-2011-1252, CVE-2011-1254, CVE-2011-1255, CVE-2011-1256, CVE-2011-1258, CVE-2011-1260, CVE-2011-1261, CVE-2011-1262 |
| Izvorni ID preporuke: | MS11-050 |
| Izvor: | Microsoft |
| Problem: | |
| Neki od uočenih nedostataka posljedica su neodgovarajućeg oblikovanja prikaza pojedinih web stranica, provjere HTML (eng. HyperText Markup Language) podataka, nepravilnog upravljanja memorijom itd. |
|
| Posljedica: | |
| Zlonamjerni, udaljeni korisnici mogu iskoristiti ove nedostatke za izvršavanje proizvoljnog programskog koda i pregled potencijalno osjetljivih informacija. |
|
| Rješenje: | |
| Svim se korisnicima savjetuje primjena objavljene nadogradnje. |
|
Izvorni tekst preporuke
Microsoft Security Bulletin MS11-050 - Critical
Cumulative Security Update for Internet Explorer (2530548)
Published: June 14, 2011
Version: 1.0
General Information
Executive Summary
This security update resolves eleven privately reported vulnerabilities in Internet Explorer. The most severe vulnerabilities could allow remote code execution if a user views a specially crafted Web page using Internet Explorer. An attacker who successfully exploited any of these vulnerabilities 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.
This security update is rated Critical for Internet Explorer 6 on Windows clients, Internet Explorer 7, Internet Explorer 8, and Internet Explorer 9; and Moderate for Internet Explorer 6 on Windows servers. For more information, see the subsection, Affected and Non-Affected Software, in this section.
The security update addresses the vulnerabilities by modifying the way Internet Explorer enforces the content settings supplied by the Web server, handles HTML sanitization using toStaticHTML, handles objects in memory, and handles script during certain processes. For more information about the vulnerabilities, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information.
Recommendation. The majority of customers have automatic updating enabled and will not need to take any action because this security update will be downloaded and installed automatically. Customers who have not enabled automatic updating need to check for updates and install this update manually. For information about specific configuration options in automatic updating, see Microsoft Knowledge Base Article 294871.
For administrators and enterprise installations, or end users who want to install this security update manually, Microsoft recommends that customers apply the update immediately using update management software, or by checking for updates using the Microsoft Update service.
See also the section, Detection and Deployment Tools and Guidance, later in this bulletin.
Known Issues. None
Top of sectionTop of section
Affected and Non-Affected Software
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.
Affected Software
Operating System Component Maximum Security Impact Aggregate Severity Rating Bulletins Replaced by This Update
Internet Explorer 6
Windows XP Service Pack 3
Internet Explorer 6
Remote Code Execution
Critical
MS11-018
Windows XP Professional x64 Edition Service Pack 2
Internet Explorer 6
Remote Code Execution
Critical
MS11-018
Windows Server 2003 Service Pack 2
Internet Explorer 6
Remote Code Execution
Moderate
MS11-018
Windows Server 2003 x64 Edition Service Pack 2
Internet Explorer 6
Remote Code Execution
Moderate
MS11-018
Windows Server 2003 with SP2 for Itanium-based Systems
Internet Explorer 6
Remote Code Execution
Moderate
MS11-018
Internet Explorer 7
Windows XP Service Pack 3
Internet Explorer 7
Remote Code Execution
Critical
MS11-018
Windows XP Professional x64 Edition Service Pack 2
Internet Explorer 7
Remote Code Execution
Critical
MS11-018
Windows Server 2003 Service Pack 2
Internet Explorer 7
Remote Code Execution
Critical
MS11-018
Windows Server 2003 x64 Edition Service Pack 2
Internet Explorer 7
Remote Code Execution
Critical
MS11-018
Windows Server 2003 with SP2 for Itanium-based Systems
Internet Explorer 7
Remote Code Execution
Critical
MS11-018
Windows Vista Service Pack 1 and Windows Vista Service Pack 2
Internet Explorer 7
Remote Code Execution
Critical
MS11-018
Windows Vista x64 Edition Service Pack 1 and Windows Vista x64 Edition Service Pack 2
Internet Explorer 7
Remote Code Execution
Critical
MS11-018
Windows Server 2008 for 32-bit Systems and Windows Server 2008 for 32-bit Systems Service Pack 2
Internet Explorer 7**
Remote Code Execution
Critical
MS11-018
Windows Server 2008 for x64-based Systems and Windows Server 2008 for x64-based Systems Service Pack 2
Internet Explorer 7**
Remote Code Execution
Critical
MS11-018
Windows Server 2008 for Itanium-based Systems and Windows Server 2008 for Itanium-based Systems Service Pack 2
Internet Explorer 7
Remote Code Execution
Critical
MS11-018
Internet Explorer 8
Windows XP Service Pack 3
Internet Explorer 8
Remote Code Execution
Critical
MS11-018
Windows XP Professional x64 Edition Service Pack 2
Internet Explorer 8
Remote Code Execution
Critical
MS11-018
Windows Server 2003 Service Pack 2
Internet Explorer 8
Remote Code Execution
Critical
MS11-018
Windows Server 2003 x64 Edition Service Pack 2
Internet Explorer 8
Remote Code Execution
Critical
MS11-018
Windows Vista Service Pack 1 and Windows Vista Service Pack 2
Internet Explorer 8
Remote Code Execution
Critical
MS11-018
Windows Vista x64 Edition Service Pack 1 and Windows Vista x64 Edition Service Pack 2
Internet Explorer 8
Remote Code Execution
Critical
MS11-018
Windows Server 2008 for 32-bit Systems and Windows Server 2008 for 32-bit Systems Service Pack 2
Internet Explorer 8**
Remote Code Execution
Critical
MS11-018
Windows Server 2008 for x64-based Systems and Windows Server 2008 for x64-based Systems Service Pack 2
Internet Explorer 8**
Remote Code Execution
Critical
MS11-018
Windows 7 for 32-bit Systems and Windows 7 for 32-bit Systems Service Pack 1
Internet Explorer 8
Remote Code Execution
Critical
MS11-018
Windows 7 for x64-based Systems and Windows 7 for x64-based Systems Service Pack 1
Internet Explorer 8
Remote Code Execution
Critical
MS11-018
Windows Server 2008 R2 for x64-based Systems and Windows Server 2008 R2 for x64-based Systems Service Pack 1
Internet Explorer 8**
Remote Code Execution
Critical
MS11-018
Windows Server 2008 R2 for Itanium-based Systems and Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
Internet Explorer 8
Remote Code Execution
Critical
MS11-018
Internet Explorer 9
Windows Vista Service Pack 2
Internet Explorer 9
Remote Code Execution
Critical
None
Windows Vista x64 Edition Service Pack 2
Internet Explorer 9
Remote Code Execution
Critical
None
Windows Server 2008 for 32-bit Systems Service Pack 2
Internet Explorer 9**
Remote Code Execution
Critical
None
Windows Server 2008 for x64-based Systems Service Pack 2
Internet Explorer 9**
Remote Code Execution
Critical
None
Windows 7 for 32-bit Systems and Windows 7 for 32-bit Systems Service Pack 1
Internet Explorer 9
Remote Code Execution
Critical
None
Windows 7 for x64-based Systems and Windows 7 for x64-based Systems Service Pack 1
Internet Explorer 9
Remote Code Execution
Critical
None
Windows Server 2008 R2 for x64-based Systems and Windows Server 2008 R2 for x64-based Systems Service Pack 1
Internet Explorer 9**
Remote Code Execution
Critical
None
**Server Core installation not affected. The vulnerabilities addressed by this update do not affect supported editions of Windows Server 2008 or Windows Server 2008 R2 as indicated, when installed using the Server Core installation option. For more information on this installation option, see the TechNet articles, Managing a Server Core Installation and Servicing a Server Core Installation. Note that the Server Core installation option does not apply to certain editions of Windows Server 2008 and Windows Server 2008 R2; see Compare Server Core Installation Options.
Top of sectionTop of section
Frequently Asked Questions (FAQ) Related to This Security Update
Where are the file information details?
Refer to the reference tables in the Security Update Deployment section for the location of the file information details.
Why does this update address several reported security vulnerabilities?
This update contains support for several vulnerabilities because the modifications that are required to address these issues are located in related files. Instead of having to install several updates that are almost the same, customers need to install this update only.
Does this update contain any security-related changes to functionality?
This update includes a defense-in-depth update to help improve memory protection in Internet Explorer.
What is defense-in-depth?
In information security, defense-in-depth refers to an approach in which multiple layers of defense are in place to help prevent attackers from compromising the security of a network or system.
I am using an older release of the software discussed in this security bulletin. What should I do?
The affected software listed in this bulletin have been tested to determine which releases are affected. Other releases are past their support life cycle. For more information about the product lifecycle, visit the Microsoft Support Lifecycle Web site.
It should be a priority for customers who have older releases of the software to migrate to supported releases to prevent potential exposure to vulnerabilities. To determine the support lifecycle for your software release, see Select a Product for Lifecycle Information. For more information about service packs for these software releases, see Lifecycle Supported Service Packs.
Customers who require custom support for older software must contact their Microsoft account team representative, their Technical Account Manager, or the appropriate Microsoft partner representative for custom support options. Customers without an Alliance, Premier, or Authorized Contract can contact their local Microsoft sales office. For contact information, visit the Microsoft Worldwide Information Web site, select the country in the Contact Information list, and then click Go to see a list of telephone numbers. When you call, ask to speak with the local Premier Support sales manager. For more information, see the Microsoft Support Lifecycle Policy FAQ.
Top of sectionTop of section
Vulnerability Information
Severity Ratings and Vulnerability Identifiers
The following severity ratings assume the potential maximum impact of the vulnerability. For information regarding the likelihood, within 30 days of this security bulletin's release, of the exploitability of the vulnerability in relation to its severity rating and security impact, please see the Exploitability Index in the June bulletin summary. For more information, see Microsoft Exploitability Index.
Table 1
Vulnerability Severity Rating and Maximum Security Impact by Affected Software
Affected Software MIME Sniffing Information Disclosure Vulnerability - CVE-2011-1246 Link Properties Handling Memory Corruption Vulnerability - CVE-2011-1250 DOM Manipulation Memory Corruption Vulnerability - CVE-2011-1251 toStaticHTML Information Disclosure Vulnerability - CVE-2011-1252 Drag and Drop Memory Corruption Vulnerability - CVE-2011-1254 Time Element Memory Corruption Vulnerability - CVE-2011-1255
Internet Explorer 6
Internet Explorer 6 for Windows XP Service Pack 3
Not applicable
Critical
Remote Code Execution
Not applicable
Not applicable
Critical
Remote Code Execution
Critical
Remote Code Execution
Internet Explorer 6 for Windows XP Professional x64 Edition Service Pack 2
Not applicable
Critical
Remote Code Execution
Not applicable
Not applicable
Critical
Remote Code Execution
Critical
Remote Code Execution
Internet Explorer 6 for Windows Server 2003 Service Pack 2
Not applicable
Moderate
Remote Code Execution
Not applicable
Not applicable
Moderate
Remote Code Execution
Moderate
Remote Code Execution
Internet Explorer 6 for Windows Server 2003 x64 Edition Service Pack 2
Not applicable
Moderate
Remote Code Execution
Not applicable
Not applicable
Moderate
Remote Code Execution
Moderate
Remote Code Execution
Internet Explorer 6 for Windows Server 2003 with SP2 for Itanium-based Systems
Not applicable
Moderate
Remote Code Execution
Not applicable
Not applicable
Moderate
Remote Code Execution
Moderate
Remote Code Execution
Internet Explorer 7
Internet Explorer 7 for Windows XP Service Pack 3
Not applicable
Critical
Remote Code Execution
Not applicable
Important
Information Disclosure
Critical
Remote Code Execution
Critical
Remote Code Execution
Internet Explorer 7 for Windows XP Professional x64 Edition Service Pack 2
Not applicable
Critical
Remote Code Execution
Not applicable
Important
Information Disclosure
Critical
Remote Code Execution
Critical
Remote Code Execution
Internet Explorer 7 for Windows Server 2003 Service Pack 2
Not applicable
Moderate
Remote Code Execution
Not applicable
Low
Information Disclosure
Moderate
Remote Code Execution
Moderate
Remote Code Execution
Internet Explorer 7 for Windows Server 2003 x64 Edition Service Pack 2
Not applicable
Moderate
Remote Code Execution
Not applicable
Low
Information Disclosure
Moderate
Remote Code Execution
Moderate
Remote Code Execution
Internet Explorer 7 for Windows Server 2003 with SP2 for Itanium-based Systems
Not applicable
Moderate
Remote Code Execution
Not applicable
Low
Information Disclosure
Moderate
Remote Code Execution
Moderate
Remote Code Execution
Internet Explorer 7 in Windows Vista Service Pack 1 and Windows Vista Service Pack 2
Not applicable
Critical
Remote Code Execution
Not applicable
Important
Information Disclosure
Critical
Remote Code Execution
Critical
Remote Code Execution
Internet Explorer 7 in Windows Vista x64 Edition Service Pack 1 and Windows Vista x64 Edition Service Pack 2
Not applicable
Critical
Remote Code Execution
Not applicable
Important
Information Disclosure
Critical
Remote Code Execution
Critical
Remote Code Execution
Internet Explorer 7 in Windows Server 2008 for 32-bit Systems and Windows Server 2008 for 32-bit Systems Service Pack 2**
Not applicable
Moderate
Remote Code Execution
Not applicable
Low
Information Disclosure
Moderate
Remote Code Execution
Moderate
Remote Code Execution
Internet Explorer 7 in Windows Server 2008 for x64-based Systems and Windows Server 2008 for x64-based Systems Service Pack 2**
Not applicable
Moderate
Remote Code Execution
Not applicable
Low
Information Disclosure
Moderate
Remote Code Execution
Moderate
Remote Code Execution
Internet Explorer 7 in Windows Server 2008 for Itanium-based Systems and Windows Server 2008 for Itanium-based Systems Service Pack 2
Not applicable
Moderate
Remote Code Execution
Not applicable
Low
Information Disclosure
Moderate
Remote Code Execution
Moderate
Remote Code Execution
Internet Explorer 8
Internet Explorer 8 for Windows XP Service Pack 3
Moderate
Information Disclosure
Critical
Remote Code Execution
Critical
Remote Code Execution
Important
Information Disclosure
Critical
Remote Code Execution
Critical
Remote Code Execution
Internet Explorer 8 for Windows XP Professional x64 Edition Service Pack 2
Moderate
Information Disclosure
Critical
Remote Code Execution
Critical
Remote Code Execution
Important
Information Disclosure
Critical
Remote Code Execution
Critical
Remote Code Execution
Internet Explorer 8 for Windows Server 2003 Service Pack 2
No severity rating[1]
Moderate
Remote Code Execution
Moderate
Remote Code Execution
Low
Information Disclosure
Moderate
Remote Code Execution
Moderate
Remote Code Execution
Internet Explorer 8 for Windows Server 2003 x64 Edition Service Pack 2
No severity rating[1]
Moderate
Remote Code Execution
Moderate
Remote Code Execution
Low
Information Disclosure
Moderate
Remote Code Execution
Moderate
Remote Code Execution
Internet Explorer 8 in Vista Service Pack 1 and Windows Vista Service Pack 2
Moderate
Information Disclosure
Critical
Remote Code Execution
Critical
Remote Code Execution
Important
Information Disclosure
Critical
Remote Code Execution
Critical
Remote Code Execution
Internet Explorer 8 in Windows Vista x64 Edition Service Pack 1 and Windows Vista x64 Edition Service Pack 2
Moderate
Information Disclosure
Critical
Remote Code Execution
Critical
Remote Code Execution
Important
Information Disclosure
Critical
Remote Code Execution
Critical
Remote Code Execution
Internet Explorer 8 in Windows Server 2008 for 32-bit Systems and Windows Server 2008 for 32-bit Systems Service Pack 2**
No severity rating[1]
Moderate
Remote Code Execution
Moderate
Remote Code Execution
Low
Information Disclosure
Moderate
Remote Code Execution
Moderate
Remote Code Execution
Internet Explorer 8 in Windows Server 2008 for x64-based Systems and Windows Server 2008 for x64-based Systems Service Pack 2**
No severity rating[1]
Moderate
Remote Code Execution
Moderate
Remote Code Execution
Low
Information Disclosure
Moderate
Remote Code Execution
Moderate
Remote Code Execution
Internet Explorer 8 in Windows 7 for 32-bit Systems and Windows 7 for 32-bit Systems Service Pack 1
Moderate
Information Disclosure
Critical
Remote Code Execution
Critical
Remote Code Execution
Important
Information Disclosure
Critical
Remote Code Execution
Critical
Remote Code Execution
Internet Explorer 8 in Windows 7 for x64-based Systems and Windows 7 for x64-based Systems Service Pack 1
Moderate
Information Disclosure
Critical
Remote Code Execution
Critical
Remote Code Execution
Important
Information Disclosure
Critical
Remote Code Execution
Critical
Remote Code Execution
Internet Explorer 8 in Windows Server 2008 R2 for x64-based Systems and Windows Server 2008 R2 for x64-based Systems Service Pack 1**
No severity rating[1]
Moderate
Remote Code Execution
Moderate
Remote Code Execution
Low
Information Disclosure
Moderate
Remote Code Execution
Moderate
Remote Code Execution
Internet Explorer 8 in Windows Server 2008 R2 for Itanium-based Systems and Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
No severity rating[1]
Moderate
Remote Code Execution
Moderate
Remote Code Execution
Low
Information Disclosure
Moderate
Remote Code Execution
Moderate
Remote Code Execution
Internet Explorer 9
Internet Explorer 9 for Windows Vista Service Pack 2
Not applicable
Critical
Remote Code Execution
Not applicable
Not applicable
Not applicable
Not applicable
Internet Explorer 9 for Windows Vista x64 Edition Service Pack 2
Not applicable
Critical
Remote Code Execution
Not applicable
Not applicable
Not applicable
Not applicable
Internet Explorer 9 for Windows Server 2008 for 32-bit Systems Service Pack 2**
Not applicable
Moderate
Remote Code Execution
Not applicable
Not applicable
Not applicable
Not applicable
Internet Explorer 9 for Windows Server 2008 for x64-based Systems Service Pack 2**
Not applicable
Moderate
Remote Code Execution
Not applicable
Not applicable
Not applicable
Not applicable
Internet Explorer 9 for Windows 7 for 32-bit Systems and Windows 7 for 32-bit Systems Service Pack 1
Not applicable
Critical
Remote Code Execution
Not applicable
Not applicable
Not applicable
Not applicable
Internet Explorer 9 for Windows 7 for x64-based Systems and Windows 7 for x64-based Systems Service Pack 1
Not applicable
Critical
Remote Code Execution
Not applicable
Not applicable
Not applicable
Not applicable
Internet Explorer 9 for Windows Server 2008 R2 for x64-based Systems and Windows Server 2008 R2 for x64-based Systems Service Pack 1**
Not applicable
Moderate
Remote Code Execution
Not applicable
Not applicable
Not applicable
Not applicable
[1]Severity ratings do not apply to this update for the specified software because the known attack vectors for the vulnerability discussed in this bulletin are blocked in a default configuration. However, because the vulnerable code exists, Microsoft recommends that customers of this software apply this security update.
**Server Core installation not affected. The vulnerabilities addressed by this update do not affect supported editions of Windows Server 2008 or Windows Server 2008 R2 as indicated, when installed using the Server Core installation option. For more information on this installation option, see the TechNet articles, Managing a Server Core Installation and Servicing a Server Core Installation. Note that the Server Core installation option does not apply to certain editions of Windows Server 2008 and Windows Server 2008 R2; see Compare Server Core Installation Options.
Table 2
Vulnerability Severity Rating and Maximum Security Impact by Affected Software
Affected Software DOM Modification Memory Corruption Vulnerability - CVE-2011-1256 Drag and Drop Information Disclosure Vulnerability - CVE-2011-1258 Layout Memory Corruption Vulnerability - CVE-2011-1260 Selection Object Memory Corruption Vulnerability - CVE-2011-1261 HTTP Redirect Memory Corruption Vulnerability - CVE-2011-1262 Aggregate Severity Rating
Internet Explorer 6
Internet Explorer 6 for Windows XP Service Pack 3
Important
Remote Code Execution
Moderate
Information Disclosure
Not applicable
Critical
Remote Code Execution
Not applicable
Critical
Internet Explorer 6 for Windows XP Professional x64 Edition Service Pack 2
Important
Remote Code Execution
Moderate
Information Disclosure
Not applicable
Critical
Remote Code Execution
Not applicable
Critical
Internet Explorer 6 for Windows Server 2003 Service Pack 2
Low
Remote Code Execution
No severity rating[1]
Not applicable
Moderate
Remote Code Execution
Not applicable
Moderate
Internet Explorer 6 for Windows Server 2003 x64 Edition Service Pack 2
Low
Remote Code Execution
No severity rating[1]
Not applicable
Moderate
Remote Code Execution
Not applicable
Moderate
Internet Explorer 6 for Windows Server 2003 with SP2 for Itanium-based Systems
Low
Remote Code Execution
No severity rating[1]
Not applicable
Moderate
Remote Code Execution
Not applicable
Moderate
Internet Explorer 7
Internet Explorer 7 for Windows XP Service Pack 3
Important
Remote Code Execution
Moderate
Information Disclosure
Not applicable
Critical
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 7 for Windows XP Professional x64 Edition Service Pack 2
Important
Remote Code Execution
Moderate
Information Disclosure
Not applicable
Critical
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 7 for Windows Server 2003 Service Pack 2
Low
Remote Code Execution
No severity rating[1]
Not applicable
Moderate
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 7 for Windows Server 2003 x64 Edition Service Pack 2
Low
Remote Code Execution
No severity rating[1]
Not applicable
Moderate
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 7 for Windows Server 2003 with SP2 for Itanium-based Systems
Low
Remote Code Execution
No severity rating[1]
Not applicable
Moderate
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 7 in Windows Vista Service Pack 1 and Windows Vista Service Pack 2
Important
Remote Code Execution
Moderate
Information Disclosure
Not applicable
Critical
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 7 in Windows Vista x64 Edition Service Pack 1 and Windows Vista x64 Edition Service Pack 2
Important
Remote Code Execution
Moderate
Information Disclosure
Not applicable
Critical
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 7 in Windows Server 2008 for 32-bit Systems and Windows Server 2008 for 32-bit Systems Service Pack 2**
Low
Remote Code Execution
No severity rating[1]
Not applicable
Moderate
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 7 in Windows Server 2008 for x64-based Systems and Windows Server 2008 for x64-based Systems Service Pack 2**
Low
Remote Code Execution
No severity rating[1]
Not applicable
Moderate
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 7 in Windows Server 2008 for Itanium-based Systems and Windows Server 2008 for Itanium-based Systems Service Pack 2
Low
Remote Code Execution
No severity rating[1]
Not applicable
Moderate
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 8
Internet Explorer 8 for Windows XP Service Pack 3
Important
Remote Code Execution
Moderate
Information Disclosure
Critical
Remote Code Execution
Critical
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 8 for Windows XP Professional x64 Edition Service Pack 2
Important
Remote Code Execution
Moderate
Information Disclosure
Critical
Remote Code Execution
Moderate
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 8 for Windows Server 2003 Service Pack 2
Low
Remote Code Execution
No severity rating[1]
Critical
Remote Code Execution
Moderate
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 8 for Windows Server 2003 x64 Edition Service Pack 2
Low
Remote Code Execution
No severity rating[1]
Critical
Remote Code Execution
Moderate
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 8 in Vista Service Pack 1 and Windows Vista Service Pack 2
Important
Remote Code Execution
Moderate
Information Disclosure
Critical
Remote Code Execution
Critical
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 8 in Windows Vista x64 Edition Service Pack 1 and Windows Vista x64 Edition Service Pack 2
Important
Remote Code Execution
Moderate
Information Disclosure
Critical
Remote Code Execution
Critical
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 8 in Windows Server 2008 for 32-bit Systems and Windows Server 2008 for 32-bit Systems Service Pack 2**
Low
Remote Code Execution
No severity rating[1]
Critical
Remote Code Execution
Moderate
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 8 in Windows Server 2008 for x64-based Systems and Windows Server 2008 for x64-based Systems Service Pack 2**
Low
Remote Code Execution
No severity rating[1]
Critical
Remote Code Execution
Moderate
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 8 in Windows 7 for 32-bit Systems and Windows 7 for 32-bit Systems Service Pack 1
Important
Remote Code Execution
Moderate
Information Disclosure
Critical
Remote Code Execution
Moderate
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 8 in Windows 7 for x64-based Systems and Windows 7 for x64-based Systems Service Pack 1
Important
Remote Code Execution
Moderate
Information Disclosure
Critical
Remote Code Execution
Critical
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 8 in Windows Server 2008 R2 for x64-based Systems and Windows Server 2008 R2 for x64-based Systems Service Pack 1**
Low
Remote Code Execution
No severity rating[1]
Critical
Remote Code Execution
Critical
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 8 in Windows Server 2008 R2 for Itanium-based Systems and Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
Low
Remote Code Execution
No severity rating[1]
Critical
Remote Code Execution
Moderate
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 9
Internet Explorer 9 for Windows Vista Service Pack 2
Not applicable
Not applicable
Critical
Remote Code Execution
Critical
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 9 for Windows Vista x64 Edition Service Pack 2
Not applicable
Not applicable
Critical
Remote Code Execution
Critical
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 9 for Windows Server 2008 for 32-bit Systems Service Pack 2**
Not applicable
Not applicable
Critical
Remote Code Execution
Moderate
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 9 for Windows Server 2008 for x64-based Systems Service Pack 2**
Not applicable
Not applicable
Critical
Remote Code Execution
Moderate
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 9 for Windows 7 for 32-bit Systems and Windows 7 for 32-bit Systems Service Pack 1
Not applicable
Not applicable
Critical
Remote Code Execution
Critical
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 9 for Windows 7 for x64-based Systems and Windows 7 for x64-based Systems Service Pack 1
Not applicable
Not applicable
Critical
Remote Code Execution
Critical
Remote Code Execution
Critical
Remote Code Execution
Critical
Internet Explorer 9 for Windows Server 2008 R2 for x64-based Systems and Windows Server 2008 R2 for x64-based Systems Service Pack 1**
Not applicable
Not applicable
Critical
Remote Code Execution
Moderate
Remote Code Execution
Critical
Remote Code Execution
Critical
[1]Severity ratings do not apply to this update for the specified software because the known attack vectors for the vulnerability discussed in this bulletin are blocked in a default configuration. However, because the vulnerable code exists, Microsoft recommends that customers of this software apply this security update.
**Server Core installation not affected. The vulnerabilities addressed by this update do not affect supported editions of Windows Server 2008 or Windows Server 2008 R2 as indicated, when installed using the Server Core installation option. For more information on this installation option, see the TechNet articles, Managing a Server Core Installation and Servicing a Server Core Installation. Note that the Server Core installation option does not apply to certain editions of Windows Server 2008 and Windows Server 2008 R2; see Compare Server Core Installation Options.
Top of sectionTop of section
MIME Sniffing Information Disclosure Vulnerability - CVE-2011-1246
An information disclosure vulnerability exists in Internet Explorer that could allow an attacker to force the browser to perform unexpected actions when a user downloads Web content, allowing an attacker to view content from a different domain or Internet Explorer zone other than the domain or zone of the attacker's Web page.
To view this vulnerability as a standard entry in the Common Vulnerabilities and Exposures list, see CVE-2011-1246.
Mitigating Factors for MIME Sniffing Information Disclosure Vulnerability - CVE-2011-1246
Mitigation refers to a setting, common configuration, or general best-practice, existing in a default state, that could reduce the severity of exploitation of a vulnerability. The following mitigating factors may be helpful in your situation:
â 
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