National Cyber Awareness System

Vulnerability Summary for CVE-2011-3414

Overview

The CaseInsensitiveHashProvider.getHashCode function in the HashTable implementation in the ASP.NET subsystem in Microsoft .NET Framework 1.1 SP1, 2.0 SP2, 3.5 SP1, 3.5.1, and 4.0 computes hash values for form parameters without restricting the ability to trigger hash collisions predictably, which allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted parameters, aka "Collisions in HashTable May Cause DoS Vulnerability."

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

References to Advisories, Solutions, and Tools

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US-CERT Technical Alert: TA11-347A

Name: TA11-347A

Hyperlink:http://www.us-cert.gov/cas/techalerts/TA11-347A.html

US-CERT Vulnerability Note: VU#903934

Name: VU#903934

Hyperlink:http://www.kb.cert.org/vuls/id/903934

External Source: MISC

Name: http://www.ocert.org/advisories/ocert-2011-003.html

Hyperlink:http://www.ocert.org/advisories/ocert-2011-003.html

External Source: MISC

Name: http://www.nruns.com/_downloads/advisory28122011.pdf

Hyperlink:http://www.nruns.com/_downloads/advisory28122011.pdf

External Source: MS

Name: MS11-100

Type: Advisory

Hyperlink:http://technet.microsoft.com/security/bulletin/MS11-100

External Source: OVAL

Name: oval:org.mitre.oval:def:14588

Hyperlink:http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:14588

External Source: BUGTRAQ

Name: 20111228 n.runs-SA-2011.004 - web programming languages and platforms - DoS through hash table

Hyperlink:http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html

References to Check Content

Identifier:oval:org.mitre.oval:def:14588

Check System:http://oval.mitre.org/XMLSchema/oval-definitions-5

Hyperlink:http://oval.mitre.org/repository/data/DownloadDefinition?id=oval:org.mitre.oval:def:14588