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Category:   Application (Generic)  >   Microsoft Silverlight Vendors:   Microsoft
Microsoft Silverlight Flaws Let Remote Users Obtain Sensitive Information and Execute Arbitrary Code
SecurityTracker Alert ID:  1034321
SecurityTracker URL:  http://securitytracker.com/id/1034321
CVE Reference:   CVE-2015-6114, CVE-2015-6165, CVE-2015-6166   (Links to External Site)
Date:  Dec 8 2015
Impact:   Disclosure of system information, Disclosure of user information, Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 5
Description:   Several vulnerabilities were reported in Microsoft Silverlight. A remote user can cause arbitrary code to be executed on the target user's system. A remote user can obtain potentially sensitive information on the target system.

A remote user can create a specially crafted Silverlight application that, when loaded by the target user, will execute arbitrary code on the target user's system [CVE-2015-6166].

A remote user can create a specially crafted Silverlight application that, when loaded by the target user, will obtain potentially sensitive information on the target user's system [CVE-2015-6114, CVE-2015-6165].

Marcin 'Icewall' Noga of Cisco Talos reported one of these vulnerabilities.

Impact:   A remote user can create content that, when loaded by the target user, will execute arbitrary code on the target user's system.

A remote user can obtain potentially sensitive information on the target system.

Solution:   The vendor has issued a fix.

Microsoft Silverlight 5 (Mac):

https://www.microsoft.com/downloads/details.aspx?familyid=8240d856-93d9-4614-87af-3525ad021a56

Microsoft Silverlight 5 Developer Runtime (Mac):

https://www.microsoft.com/downloads/details.aspx?familyid=8240d856-93d9-4614-87af-3525ad021a56

Microsoft Silverlight 5 (Windows clients):

https://www.microsoft.com/downloads/details.aspx?familyid=8240d856-93d9-4614-87af-3525ad021a56

Microsoft Silverlight 5 Developer Runtime (Windows clients):

https://www.microsoft.com/downloads/details.aspx?familyid=8240d856-93d9-4614-87af-3525ad021a56

Microsoft Silverlight 5 (Windows servers):

https://www.microsoft.com/downloads/details.aspx?familyid=8240d856-93d9-4614-87af-3525ad021a56

Microsoft Silverlight 5 Developer Runtime (Windows servers):

https://www.microsoft.com/downloads/details.aspx?familyid=8240d856-93d9-4614-87af-3525ad021a56

The Microsoft advisory is available at:

https://technet.microsoft.com/library/security/ms15-129

Vendor URL:  technet.microsoft.com/library/security/ms15-129 (Links to External Site)
Cause:   Access control error
Underlying OS:  UNIX (macOS/OS X), Windows (Any)

Message History:   None.


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