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Vulnerability Details : CVE-2011-3414

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."
Publish Date : 2011-12-29 Last Update Date : 2013-01-29
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- CVSS Scores & Vulnerability Types

CVSS Score
7.8
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 399

- Related OVAL Definitions

Title Definition Id Class Family
Collisions in HashTable May Cause DoS Vulnerability oval:org.mitre.oval:def:14588 windows
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2011-3414

# Product Type Vendor Product Version Update Edition Language
1 OS Microsoft Windows 7 - SP1 X64 Version Details Vulnerabilities
2 OS Microsoft Windows 7 - - X32 Version Details Vulnerabilities
3 OS Microsoft Windows 7 - SP1 X32 Version Details Vulnerabilities
4 OS Microsoft Windows 7 - - X64 Version Details Vulnerabilities
5 OS Microsoft Windows Server 2003 SP2 Version Details Vulnerabilities
6 OS Microsoft Windows Server 2003 SP2 X64 Version Details Vulnerabilities
7 OS Microsoft Windows Server 2003 SP2 Itanium Version Details Vulnerabilities
8 OS Microsoft Windows Server 2008 - SP2 X32 Version Details Vulnerabilities
9 OS Microsoft Windows Server 2008 - SP2 X64 Version Details Vulnerabilities
10 OS Microsoft Windows Server 2008 R2 X64 Version Details Vulnerabilities
11 OS Microsoft Windows Server 2008 SP2 Itanium Version Details Vulnerabilities
12 OS Microsoft Windows Server 2008 R2 SP1 X64 Version Details Vulnerabilities
13 OS Microsoft Windows Server 2008 R2 Itanium Version Details Vulnerabilities
14 OS Microsoft Windows Server 2008 R2 SP1 Itanium Version Details Vulnerabilities
15 OS Microsoft Windows Vista - SP2 Version Details Vulnerabilities
16 OS Microsoft Windows Vista SP2 X64 Version Details Vulnerabilities
17 OS Microsoft Windows Xp SP2 Professional X64 Version Details Vulnerabilities
18 OS Microsoft Windows Xp SP3 Unknown English Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Microsoft Windows 7 4
Microsoft Windows Server 2003 3
Microsoft Windows Server 2008 7
Microsoft Windows Vista 2
Microsoft Windows Xp 2

- References For CVE-2011-3414

http://www.kb.cert.org/vuls/id/903934
CERT-VN VU#903934
http://www.ocert.org/advisories/ocert-2011-003.html
http://www.nruns.com/_downloads/advisory28122011.pdf
http://technet.microsoft.com/en-us/security/bulletin/ms11-100
Microsoft Security Bulletin MS11-100 MS11-100 - Critical : Vulnerabilities in .NET Framework Could Allow Elevation of Privilege (2638420) - Version: 1.6 Severity Rating: Critical Revision Note: V1.6 (July 10, 2012): Microsoft revised this bulletin to communicate a minor detection change for KB2657424 for Microsoft .NET Framework 3.5 Service Pack 1 to correct an offering issue. There were no changes to the security update files. Customers who have already successfully updated their systems do not need to take any action. Summary: This security update resolves one publicly disclosed vulnerability and three privately reported vulnerabilities in Microsoft .NET Framework. The most severe of these vulnerabilities could allow elevation of privilege if an unauthenticated attacker sends a specially crafted web request to the target site. An attacker who successfully exploited this vulnerability could take any action in the context of an existing account on the ASP.NET site, including executing arbitrary commands. In order to exploit this vulnerability, an attacker must be able to register an account on theRelease Date:2012-07-10
http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html
BUGTRAQ 20111228 n.runs-SA-2011.004 - web programming languages and platforms - DoS through hash table
http://www.us-cert.gov/cas/techalerts/TA11-347A.html
CERT TA11-347A

- Metasploit Modules Related To CVE-2011-3414

There are not any metasploit modules related to this vulnerability (Please visit www.metasploit.com for more information)


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