U radu operacijskih sustava Microsoft Windows (64-bitnih inačica) otkrivena je sigurnosna ranjivost koja udaljenim napadačima omogućuje pokretanje proizvoljnog programskog koda i povećanje ovlasti na ranjivom sustavu.
Paket:
Microsoft Windows 7, Microsoft Windows Server 2003, Microsoft Windows Server 2008, Microsoft Windows Vista, Microsoft Windows XP
Operacijski sustavi:
Microsoft Windows XP, Microsoft Windows Server 2003, Microsoft Windows Vista, Microsoft Windows Server 2008, Microsoft Windows 7
Kritičnost:
6.9
Problem:
cjelobrojno prepisivanje, pogreška u programskoj komponenti
Iskorištavanje:
udaljeno
Posljedica:
proizvoljno izvršavanje programskog koda
Rješenje:
programska zakrpa proizvođača
CVE:
CVE-2012-2523
Izvorni ID preporuke:
MS12-056
Izvor:
Microsoft
Problem:
Ranjivost se javlja zbog načina na koji JScript i VBScript mehanizmi određuju veličinu objekta u memoriji kod operacije kopiranja.
Posljedica:
Napadač ju može iskoristiti za pokretanje proizvoljnog programskog koda i povećanje privilegija.
Microsoft Security Bulletin MS12-056 - Important
Vulnerability in JScript and VBScript Engines Could Allow Remote Code Execution (2706045)
Published: Tuesday, August 14, 2012
Version: 1.0
General Information
Executive Summary
This security update resolves a privately reported vulnerability in the JScript and VBScript scripting engines on 64-bit versions of Microsoft Windows. The vulnerability could allow remote code execution if a user visited a specially crafted website. An attacker would have no way to force users to visit the website. Instead, an attacker would have to convince users to visit the website, typically by getting them to click a link in an email message or Instant Messenger message that takes users to the attacker's website.
This security update is rated Important for JScript 5.8 and VBScript 5.8 on 64-bit Windows clients. This security update is also rated Low for JScript 5.8 and VBScript 5.8 on 64-bit Windows servers. For more information, see the subsection, Affected and Non-Affected Software, in this section.
The security update addresses the vulnerability by modifying the way that JScript and VBScript handle 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. Most 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 at the earliest opportunity 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, see Microsoft Support Lifecycle.
Affected Software
Operating System Component Maximum Security Impact Aggregate Severity Rating Updates Replaced
Windows XP Professional x64 Edition Service Pack 2 JScript 5.8 and VBScript 5.8
(KB2706045) Remote Code Execution Important KB2510531 in MS11-031 replaced by KB2706045
Windows Server 2003 x64 Edition Service Pack 2 JScript 5.8 and VBScript 5.8
(KB2706045) Remote Code Execution Low KB2510531 in MS11-031 replaced by KB2706045
Windows Vista x64 Edition Service Pack 2 JScript 5.8 and VBScript 5.8
(KB2706045) Remote Code Execution Important KB2510531 in MS11-031 replaced by KB2706045
Windows Server 2008 for x64-based Systems Service Pack 2 JScript 5.8 and VBScript 5.8
(KB2706045) Remote Code Execution Low KB2510531 in MS11-031 replaced by KB2706045
Windows 7 for x64-based Systems JScript 5.8 and VBScript 5.8
(KB2706045) Remote Code Execution Important KB2510531 in MS11-031 replaced by KB2706045
Windows 7 for x64-based Systems Service Pack 1 JScript 5.8 and VBScript 5.8
(KB2706045) Remote Code Execution Important KB2510531 in MS11-031 replaced by KB2706045
Windows Server 2008 R2 for x64-based Systems JScript 5.8 and VBScript 5.8
(KB2706045) Remote Code Execution Low KB2510531 in MS11-031 replaced by KB2706045
Windows Server 2008 R2 for x64-based Systems Service Pack 1 JScript 5.8 and VBScript 5.8
(KB2706045) Remote Code Execution Low KB2510531 in MS11-031 replaced by KB2706045
Windows Server 2008 R2 for Itanium-based Systems JScript 5.8 and VBScript 5.8
(KB2706045) Remote Code Execution Low KB2510531 in MS11-031 replaced by KB2706045
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1 JScript 5.8 and VBScript 5.8
(KB2706045) Remote Code Execution Low KB2510531 in MS11-031 replaced by KB2706045
Non-Affected Software
Operating System Component
Windows XP Service Pack 3 JScript 5.7 and VBScript 5.7
Jscript 5.8 and VBScript 5.8
Windows XP Professional x64 Edition Service Pack 2 JScript 5.6 and VBScript 5.6
JScript 5.7 and VBScript 5.7
Windows Server 2003 Service Pack 2 JScript 5.6 and VBScript 5.6
JScript 5.7 and VBScript 5.7
JScript 5.8 and VBScript 5.8
Windows Server 2003 x64 Edition Service Pack 2 JScript 5.6 and VBScript 5.6
Jscript 5.7 and VBScript 5.7
Windows Server 2003 with SP2 for Itanium-based Systems JScript 5.6 and VBScript 5.6
Jscript 5.7 and VBScript 5.7
Windows Vista Service Pack 2 JScript 5.7 and VBScript 5.7
Jscript 5.8 and VBScript 5.8
Windows Vista x64 Edition Service Pack 2 JScript 5.7 and VBScript 5.7
Windows Server 2008 for 32-bit Systems Service Pack 2 JScript 5.7 and VBScript 5.7
JScript 5.8 and VBScript 5.8
Windows Server 2008 for x64-based Systems Service Pack 2 JScript 5.7 and VBScript 5.7
Windows Server 2008 for Itanium-based Systems Service Pack 2 JScript 5.7 and VBScript 5.7
Windows 7 for 32-bit Systems JScript 5.8 and VBScript 5.8
Windows 7 for 32-bit Systems Service Pack 1 JScript 5.8 and VBScript 5.8
Server Core Installation Option
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) Not applicable
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) Not applicable
Windows Server 2008 R2 for x64-based Systems (Server Core installation) Not applicable
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) Not applicable
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Frequently Asked Questions (FAQ) Related to This Security Update
Vulnerability Information
Severity Ratings and Vulnerability Identifiers
JavaScript Integer Overflow Remote Code Execution Vulnerability - CVE-2012-2523
Update Information
Detection and Deployment Tools and Guidance
Security Update Deployment
Other Information
Acknowledgments
Microsoft thanks the following for working with us to help protect customers:
Cris Neckar of Google's Chrome Security Team for reporting the JavaScript Integer Overflow Remote Code Execution Vulnerability (CVE-2012-2523)
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Microsoft Active Protections Program (MAPP)
To improve security protections for customers, Microsoft provides vulnerability information to major security software providers in advance of each monthly security update release. Security software providers can then use this vulnerability information to provide updated protections to customers via their security software or devices, such as antivirus, network-based intrusion detection systems, or host-based intrusion prevention systems. To determine whether active protections are available from security software providers, please go to the active protections websites provided by program partners, listed in Microsoft Active Protections Program (MAPP) Partners.
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Support
How to obtain help and support for this security update
Help installing updates: Support for Microsoft Update
Security solutions for IT professionals: TechNet Security Troubleshooting and Support
Help protect your computer that is running Windows from viruses and malware: Virus Solution and Security Center
Local support according to your country: International Support
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Disclaimer
The information provided in the Microsoft Knowledge Base is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
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Revisions
V1.0 (August 14, 2012): Bulletin published.
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