Otkriven je sigurnosni propust u paketu Microsoft Report Viewer kojeg udaljeni napadači mogu iskoristiti za umetanje skriptnog koda u svrhu otkrivanja osjetljivih informacija.
Paket:
Microsoft Report Viewer 2005, Microsoft Visual Studio 2005
Operacijski sustavi:
Microsoft Windows XP, Microsoft Windows Server 2003, Microsoft Windows Vista, Microsoft Windows Server 2008, Microsoft Windows 7
Kritičnost:
3.2
Problem:
neodgovarajuća provjera ulaznih podataka, XSS
Iskorištavanje:
udaljeno
Posljedica:
otkrivanje osjetljivih informacija, umetanje HTML i skriptnog koda
Rješenje:
programska zakrpa proizvođača
CVE:
CVE-2011-1976
Izvorni ID preporuke:
MS11-067
Izvor:
Microsoft
Problem:
Otkriveni propust je XSS tipa, a do njega dolazi zbog nepravilne provjere parametara izvora podataka.
Posljedica:
Navođenjem korisnika na otvaranje posebno oblikovane poveznice, udaljeni napadač može umetnuti skriptni kod koji mu omogućuje otkrivanje osjetljivih podataka.
Rješenje:
Microsoft je izdao nadogradnju koja otklanja opisani propust te se savjetuje njena primjena.
Microsoft Security Bulletin MS11-067 - Important
Vulnerability in Microsoft Report Viewer Could Allow Information Disclosure (2578230)
Published: August 09, 2011
Version: 1.0
General Information
Executive Summary
This security update resolves a privately reported vulnerability in Microsoft Report Viewer. The vulnerability could allow information disclosure if a user views a specially crafted Web page. In all cases, however, an attacker would have no way to force a user to visit the Web site. Instead, an attacker would have to persuade a user to visit the Web site, typically by getting them to click a link in an e-mail message or Instant Messenger message that takes the user to the vulnerable Web site.
This security update is rated Important for all supported editions of Microsoft Visual Studio 2005 and Microsoft Report Viewer 2005 Redistributable Package. For more information, see the subsection, Affected and Non-Affected Software, in this section.
The security update addresses the vulnerability by correcting the manner in which the Microsoft Report Viewer control validates parameters within a data source. 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 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, visit Microsoft Support Lifecycle.
Affected Software
Software Maximum Security Impact Aggregate Severity Rating Bulletins Replaced by this Update
Microsoft Visual Studio 2005 Service Pack 1
(KB2548826)
Information Disclosure
Important
MS09-062
Microsoft Report Viewer 2005 Service Pack 1 Redistributable Package
(KB2579115)
Information Disclosure
Important
MS09-062
Non-Affected Software
Software
Microsoft Visual Studio .NET 2003 Service Pack 1
Microsoft Visual Studio 2008 Service Pack 1
Microsoft Visual Studio 2010
Microsoft Visual Studio 2010 Service Pack 1
Microsoft Report Viewer 2008 Redistributable Package and Microsoft Report Viewer 2008 Redistributable Package Service Pack 1
Microsoft Report Viewer 2010 Redistributable Package
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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.
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 August bulletin summary. For more information, see Microsoft Exploitability Index.
Vulnerability Severity Rating and Maximum Security Impact by Affected Software
Affected Software Report Viewer Controls XSS Vulnerability - CVE-2011-1976 Aggregate Severity Rating
Microsoft Visual Studio 2005 Service Pack 1
Important
Information Disclosure
Important
Microsoft Report Viewer 2005 Service Pack 1 Redistributable Package
Important
Information Disclosure
Important
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Report Viewer Controls XSS Vulnerability - CVE-2011-1976
An information disclosure vulnerability exists in the way that the Microsoft Report Viewer control improperly validates parameters within a data source. An attacker who successfully exploited this vulnerability could inject a client-side script in the user's browser. The script could then be used to spoof content or disclose sensitive information. Note that this vulnerability would not allow an attacker to execute code outside of the browser or to elevate their user rights directly, but it could be used to produce information that could be used to try to further compromise the affected system.
To view this vulnerability as a standard entry in the Common Vulnerabilities and Exposures list, see CVE-2011-1976.
Mitigating Factors for Report Viewer Controls XSS Vulnerability - CVE-2011-1976
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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