Microsoft .NET Framework 1.1 SP1/2.0 SP2/3.5 SP1/3.5.1/4.0 ASP.NET Hash resource management

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Microsoft .NET Framework 1.1 SP1/2.0 SP2/3.5 SP1/3.5.1/4.0. The impacted element is an unknown function of the component ASP.NET Hash. The manipulation results in resource management. This vulnerability is identified as CVE-2011-3414. The attack can be executed remotely. Additionally, an exploit exists. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability was found in Microsoft .NET Framework 1.1 SP1/2.0 SP2/3.5 SP1/3.5.1/4.0 (Programming Language Software). It has been classified as critical. Affected is an unknown code block of the component ASP.NET Hash. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on availability. CVE summarizes:

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."

The weakness was released 12/28/2011 as MS11-100 as not defined posting (Bugtraq). The advisory is available at archives.neohapsis.com. The public release was coordinated with the vendor. This vulnerability is traded as CVE-2011-3414 since 09/09/2011. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are unknown but a private exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 57414 (MS11-100: Vulnerabilities in .NET Framework Could Allow Elevation of Privilege (2638420)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins. The commercial vulnerability scanner Qualys is able to test this issue with plugin 90764 (Microsoft ASP.NET Denial of Service Vulnerability (KB2659883 and MS11-100)).

Applying a patch is able to eliminate this problem. A possible mitigation has been published 1 days after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 11962.

The vulnerability is also documented in the databases at X-Force (71989), Tenable (57414), SecurityFocus (BID 51186†), OSVDB (78057†) and Secunia (SA47323†). Entries connected to this vulnerability are available at VDB-4510, VDB-4508, VDB-4509 and VDB-4507. If you want to get best quality of vulnerability data, you may have to visit VulDB.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 7.5
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Private
Status: Proof-of-Concept

EPSS Score: 🔍
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Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 57414
Nessus Name: MS11-100: Vulnerabilities in .NET Framework Could Allow Elevation of Privilege (2638420)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 902806
OpenVAS Name: Vulnerabilities in .NET Framework Could Allow Elevation of Privilege (2638420)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
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Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Suricata ID: 2014045
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TippingPoint: 🔍
ISS Proventia IPS: 🔍
PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

09/09/2011 🔍
12/28/2011 +110 days 🔍
12/28/2011 +0 days 🔍
12/29/2011 +1 days 🔍
12/29/2011 +0 days 🔍
12/29/2011 +0 days 🔍
12/29/2011 +0 days 🔍
12/30/2011 +1 days 🔍
01/21/2012 +21 days 🔍
01/26/2025 +4754 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS11-100
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2011-3414 (🔍)
GCVE (CVE): GCVE-0-2011-3414
GCVE (VulDB): GCVE-100-4506

OVAL: 🔍
IAVM: 🔍

CERT: 🔍
X-Force: 71989
SecurityFocus: 51186
Secunia: 47323 - Microsoft .NET Framework Multiple Vulnerabilities, Moderately Critical
OSVDB: 78057 - Microsoft .NET Framework ASP.NET Hash Collision Web Form Post Parsing Remote DoS
Vulnerability Center: 34151 - [MS11-100] Microsoft .NET Framework 1.x Through 4.0 ASP.NET Remote DoS Vulnerability, Low

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 01/21/2012 01:00
Updated: 01/26/2025 19:45
Changes: 01/21/2012 01:00 (51), 04/05/2017 15:09 (36), 03/20/2021 10:30 (7), 03/20/2021 10:36 (1), 01/26/2025 19:45 (18)
Complete: 🔍
Cache ID: 216:C6B:103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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