Microsoft ASP.NET Hash Table Collision Bug Lets Remote Users Deny Service
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SecurityTracker Alert ID: 1026469 |
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SecurityTracker URL: http://securitytracker.com/id/1026469
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CVE Reference:
CVE-2011-3414
(Links to External Site)
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Updated: Dec 29 2011
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Original Entry Date: Dec 28 2011
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Impact:
Denial of service via network
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): 1.0 SP3, 1.1 SP1, 2.0 SP2, 3.5 SP1, 4
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Description:
A vulnerability was reported in Microsoft ASP.NET. A remote user can cause denial of service conditions.
A remote user can send specially crafted posts to cause significant performance degradation on the target server.
The vulnerability occurs due to the way that ASP.NET processes values in an ASP.NET form post that causes a hash collision.
The original advisory is available at:
http://www.nruns.com/_downloads/advisory28122011.pdf
Alexander Klink of n.runs AG and Julian Walde of Technische Universitat Darmstadt reported this vulnerability. Scott A. Crosby and Dan S. Wallach of Rice University reported the theoretical attack.
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Impact:
A remote user can cause performance to degrade on the target server.
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Solution:
The vendor has issued a fix.
A patch matrix is available in the vendor's advisory.
The vendor's advisory is available at:
http://technet.microsoft.com/en-us/security/bulletin/ms11-100
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Vendor URL: technet.microsoft.com/en-us/security/advisory/2659883 (Links to External Site)
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Cause:
Randomization error
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Underlying OS:
Windows (2003), Windows (2008), Windows (7), Windows (Vista), Windows (XP)
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Message History:
None.
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Source Message Contents
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Date: Wed, 28 Dec 2011 20:00:28 +0000
Subject: Microsoft ASP.Net
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http://technet.microsoft.com/en-us/security/advisory/2659883
CVE-2011-3414
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