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Category:   Application (Generic)  >   Microsoft .NET Vendors:   Microsoft
Microsoft .NET Bugs Let Local Users Gain Elevated Privileges and Remote Users Deny Service
SecurityTracker Alert ID:  1033493
SecurityTracker URL:  http://securitytracker.com/id/1033493
CVE Reference:   CVE-2015-2504, CVE-2015-2526   (Links to External Site)
Date:  Sep 8 2015
Impact:   Denial of service via network, Root access via local system, User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2.0 SP2, 3.5, 3.5.1, 4.0, 4.5, 4.5.1, 4.5.2
Description:   Two vulnerabilities were reported in Microsoft .NET. A remote user can cause the target service to crash. A local user can gain elevated privileges on the target system.

A local user can run a specially crafted .NET Framework application to bypass Code Access Security (CAS) restrictions and gain elevated privileges on the target system [CVE-2015-2504]. This can also be exploited by a remote user via an XAML browser application (XBAP).

Yorick Koster of Securify B.V. reported this vulnerability.

A remote user can send specially crafted requests to the target ASP.NET server to cause performance degradation on the target server [CVE-2015-2526].

Roberto Suggi Liverani of NCIA (NATO Communications and Information Agency) reported this vulnerability.

Impact:   A remote user can cause the target service to crash.

A local user can obtain elevated privileges on the target system.

Solution:   The vendor has issued a fix.

A patch matrix is available in the vendor advisory.

The Microsoft advisory is available at:

https://technet.microsoft.com/library/security/ms15-101

Vendor URL:  technet.microsoft.com/library/security/ms15-101 (Links to External Site)
Cause:   Access control error, Resource error
Underlying OS:  Windows (2008), Windows (2012), Windows (7), Windows (8), Windows (10), Windows (Vista)
Underlying OS Comments:  Vista SP2, 2008 SP2, 7 SP1, 2008 R2 SP1, 8, 8.1, 2012, 2012 R2, RT, RT 8.1, 10

Message History:   None.


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