Objavljena je revizija sigurnosnog upozorenja oznake MS11-052, prvotno objavljene 14. lipnja 2011., a vezanog uz propust u paketu Internet Explorer. Napadač ga može iskoristiti za udaljeno pokretanje proizvoljnog programskog koda.
| Paket: | Microsoft Internet Explorer 6.x, Microsoft Internet Explorer 7.x, Microsoft Internet Explorer 8.x |
| Operacijski sustavi: | Microsoft Windows XP, Microsoft Windows Server 2003, Microsoft Windows Vista, Microsoft Windows Server 2008, Microsoft Windows 7 |
| Kritičnost: | 6.9 |
| Problem: | neodgovarajuće rukovanje memorijom, pogreška u programskoj komponenti |
| Iskorištavanje: | udaljeno |
| Posljedica: | proizvoljno izvršavanje programskog koda |
| Rješenje: | programska zakrpa proizvođača |
| CVE: | CVE-2011-1266 |
| Izvorni ID preporuke: | MS11-052 |
| Izvor: | Microsoft |
| Problem: | |
| Propust je posljedica pogreške u Vector Markup Language (VML) implementaciji (vgx.dll) gdje se na nepravilan način rukuje pojedinim objektima. Revizija je objavljena zbog izmjena u informativnom dijelu preporuke. |
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| Posljedica: | |
| Napadaču propust omogućuje pokretanje proizvoljnog programskog koda. |
|
| Rješenje: | |
| Korisnicima se savjetuje nadogradnja. |
|
Izvorni tekst preporuke
Microsoft Security Bulletin MS11-052 - Critical
Vulnerability in Vector Markup Language Could Allow Remote Code Execution (2544521)
Published: June 14, 2011 | Updated: July 12, 2011
Version: 1.1
General Information
Executive Summary
This security update resolves a privately reported vulnerability in the Microsoft implementation of Vector Markup Language (VML). This security update is rated Critical for Internet Explorer 6, Internet Explorer 7, and Internet Explorer 8 on Windows clients; and Moderate for Internet Explorer 6, Internet Explorer 7, and Internet Explorer 8 on Windows servers. Internet Explorer 9 is not affected by the vulnerability. For more information, see the subsection, Affected and Non-Affected Software, in this section.
The vulnerability could allow remote code execution if a user viewed 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.
The security update addresses the vulnerability by modifying the way that Internet Explorer handles objects in memory. 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. 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
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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
None
Windows XP Professional x64 Edition Service Pack 2
Internet Explorer 6
Remote Code Execution
Critical
MS07-050
Windows Server 2003 Service Pack 2
Internet Explorer 6
Remote Code Execution
Moderate
MS07-050
Windows Server 2003 x64 Edition Service Pack 2
Internet Explorer 6
Remote Code Execution
Moderate
MS07-050
Windows Server 2003 with SP2 for Itanium-based Systems
Internet Explorer 6
Remote Code Execution
Moderate
MS07-050
Internet Explorer 7
Windows XP Service Pack 3
Internet Explorer 7
Remote Code Execution
Critical
MS07-050
Windows XP Professional x64 Edition Service Pack 2
Internet Explorer 7
Remote Code Execution
Critical
MS07-050
Windows Server 2003 Service Pack 2
Internet Explorer 7
Remote Code Execution
Moderate
MS07-050
Windows Server 2003 x64 Edition Service Pack 2
Internet Explorer 7
Remote Code Execution
Moderate
MS07-050
Windows Server 2003 with SP2 for Itanium-based Systems
Internet Explorer 7
Remote Code Execution
Moderate
MS07-050
Windows Vista Service Pack 1 and Windows Vista Service Pack 2
Internet Explorer 7
Remote Code Execution
Critical
None
Windows Vista x64 Edition Service Pack 1 and Windows Vista x64 Edition Service Pack 2
Internet Explorer 7
Remote Code Execution
Critical
None
Windows Server 2008 for 32-bit Systems and Windows Server 2008 for 32-bit Systems Service Pack 2
Internet Explorer 7**
Remote Code Execution
Moderate
None
Windows Server 2008 for x64-based Systems and Windows Server 2008 for x64-based Systems Service Pack 2
Internet Explorer 7**
Remote Code Execution
Moderate
None
Windows Server 2008 for Itanium-based Systems and Windows Server 2008 for Itanium-based Systems Service Pack 2
Internet Explorer 7
Remote Code Execution
Moderate
None
Internet Explorer 8
Windows XP Service Pack 3
Internet Explorer 8
Remote Code Execution
Critical
None
Windows XP Professional x64 Edition Service Pack 2
Internet Explorer 8
Remote Code Execution
Critical
None
Windows Server 2003 Service Pack 2
Internet Explorer 8
Remote Code Execution
Moderate
None
Windows Server 2003 x64 Edition Service Pack 2
Internet Explorer 8
Remote Code Execution
Moderate
None
Windows Vista Service Pack 1 and Windows Vista Service Pack 2
Internet Explorer 8
Remote Code Execution
Critical
None
Windows Vista x64 Edition Service Pack 1 and Windows Vista x64 Edition Service Pack 2
Internet Explorer 8
Remote Code Execution
Critical
None
Windows Server 2008 for 32-bit Systems and Windows Server 2008 for 32-bit Systems Service Pack 2
Internet Explorer 8**
Remote Code Execution
Moderate
None
Windows Server 2008 for x64-based Systems and Windows Server 2008 for x64-based Systems Service Pack 2
Internet Explorer 8**
Remote Code Execution
Moderate
None
Windows 7 for 32-bit Systems and Windows 7 for 32-bit Systems Service Pack 1
Internet Explorer 8
Remote Code Execution
Critical
None
Windows 7 for x64-based Systems and Windows 7 for x64-based Systems Service Pack 1
Internet Explorer 8
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 8**
Remote Code Execution
Moderate
None
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
Moderate
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.
Non-Affected Software
Operating System Component
Windows Vista Service Pack 2
Internet Explorer 9
Windows Vista x64 Edition Service Pack 2
Internet Explorer 9
Windows Server 2008 for 32-bit Systems Service Pack 2
Internet Explorer 9
Windows Server 2008 for x64-based Systems Service Pack 2
Internet Explorer 9
Windows 7 for 32-bit Systems and Windows 7 for 32-bit Systems Service Pack 1
Internet Explorer 9
Windows 7 for x64-based Systems and Windows 7 for x64-based Systems Service Pack 1
Internet Explorer 9
Windows Server 2008 R2 for x64-based Systems and Windows Server 2008 R2 for x64-based Systems Service Pack 1
Internet Explorer 9
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Frequently Asked Questions (FAQ) Related to This Security Update
Why was this bulletin revised on July 12, 2011?
Microsoft revised this bulletin to announce a change to detection logic and to correct bulletin replacement information for some affected configurations.
For customers running Internet Explorer 6 for all supported x64-based editions of Windows XP and for all supported editions of Windows Server 2003, this is a change to detection logic and a correction to bulletin replacement information. There were no changes to the security update files. Customers who have already successfully updated their systems do not need to take any action.
For customers running Internet Explorer 7 for all supported editions of Windows XP and Windows Server 2003, this is a correction to bulletin replacement information only. There were no changes to detection logic or security update files. Customers who have already successfully updated their systems do not need to take any action.
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.
If I install this security update before upgrading to Internet Explorer 7, will I still need to apply this update after upgrading to Internet Explorer 7?
Yes. Customers who have installed the current VML security update on systems with Internet Explorer 6 and later install Internet Explorer 7, will be offered this update for Internet Explorer 7. The vgx.dll version installed with Windows Internet Explorer 7 is a major-version higher than vgx.dll included in Windows XP or Windows Server 2003. When Internet Explorer 7 is installed, it will replace vgx.dll updated by Internet Explorer 6 provided in this security update.
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.
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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.
Vulnerability Severity Rating and Maximum Security Impact by Affected Software
Affected Software VML Memory Corruption Vulnerability - CVE-2011-1266 Aggregate Severity Rating
Internet Explorer 6
Internet Explorer 6 for Windows XP Service Pack 3
Critical
Remote Code Execution
Critical
Internet Explorer 6 for Windows XP Professional x64 Edition Service Pack 2
Critical
Remote Code Execution
Critical
Internet Explorer 6 for Windows Server 2003 Service Pack 2
Moderate
Remote Code Execution
Moderate
Internet Explorer 6 for Windows Server 2003 x64 Edition Service Pack 2
Moderate
Remote Code Execution
Moderate
Internet Explorer 6 for Windows Server 2003 with SP2 for Itanium-based Systems
Moderate
Remote Code Execution
Moderate
Internet Explorer 7
Internet Explorer 7 for Windows XP Service Pack 3
Critical
Remote Code Execution
Critical
Internet Explorer 7 for Windows XP Professional x64 Edition Service Pack 2
Critical
Remote Code Execution
Critical
Internet Explorer 7 for Windows Server 2003 Service Pack 2
Moderate
Remote Code Execution
Moderate
Internet Explorer 7 for Windows Server 2003 x64 Edition Service Pack 2
Moderate
Remote Code Execution
Moderate
Internet Explorer 7 for Windows Server 2003 with SP2 for Itanium-based Systems
Moderate
Remote Code Execution
Moderate
Internet Explorer 7 in Windows Vista Service Pack 1 and Windows Vista Service Pack 2
Critical
Remote Code Execution
Critical
Internet Explorer 7 in Windows Vista x64 Edition Service Pack 1 and Windows Vista x64 Edition Service Pack 2
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**
Moderate
Remote Code Execution
Moderate
Internet Explorer 7 in Windows Server 2008 for x64-based Systems and Windows Server 2008 for x64-based Systems Service Pack 2**
Moderate
Remote Code Execution
Moderate
Internet Explorer 7 in Windows Server 2008 for Itanium-based Systems and Windows Server 2008 for Itanium-based Systems Service Pack 2
Moderate
Remote Code Execution
Moderate
Internet Explorer 8
Internet Explorer 8 for Windows XP Service Pack 3
Critical
Remote Code Execution
Critical
Internet Explorer 8 for Windows XP Professional x64 Edition Service Pack 2
Critical
Remote Code Execution
Critical
Internet Explorer 8 for Windows Server 2003 Service Pack 2
Moderate
Remote Code Execution
Moderate
Internet Explorer 8 for Windows Server 2003 x64 Edition Service Pack 2
Moderate
Remote Code Execution
Moderate
Internet Explorer 8 in Vista Service Pack 1 and Windows Vista Service Pack 2
Critical
Remote Code Execution
Critical
Internet Explorer 8 in Windows Vista x64 Edition Service Pack 1 and Windows Vista x64 Edition Service Pack 2
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**
Moderate
Remote Code Execution
Moderate
Internet Explorer 8 in Windows Server 2008 for x64-based Systems and Windows Server 2008 for x64-based Systems Service Pack 2**
Moderate
Remote Code Execution
Moderate
Internet Explorer 8 in Windows 7 for 32-bit Systems and Windows 7 for 32-bit Systems Service Pack 1
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
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**
Moderate
Remote Code Execution
Moderate
Internet Explorer 8 in Windows Server 2008 R2 for Itanium-based Systems and Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
Moderate
Remote Code Execution
Moderate
**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.
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VML Memory Corruption Vulnerability - CVE-2011-1266
A remote code execution vulnerability exists in the way that Internet Explorer accesses an object that has not been correctly initialized or has been deleted. An attacker could exploit the vulnerability by constructing a specially crafted Web page. When a user views the Web page, the vulnerability could allow remote code execution. An attacker who successfully exploited this vulnerability could gain the same user rights as the logged-on user.
To view this vulnerability as a standard entry in the Common Vulnerabilities and Exposures list, see CVE-2011-1266.
Mitigating Factors for VML Memory Corruption Vulnerability - CVE-2011-1266
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:
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