Microsoft NET Framework 2.x/3.x input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft NET Framework 2.x/3.x. It has been classified as critical. Impacted is an unknown function. This manipulation causes input validation. The identification of this vulnerability is CVE-2009-1536. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Microsoft NET Framework 2.x/3.x and classified as critical. Affected by this vulnerability is an unknown code block. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect availability. The summary by CVE is:

ASP.NET in Microsoft .NET Framework 2.0 SP1 and SP2 and 3.5 Gold and SP1, when ASP 2.0 is used in integrated mode on IIS 7.0, does not properly manage request scheduling, which allows remote attackers to cause a denial of service (daemon outage) via a series of crafted HTTP requests, aka "Remote Unauthenticated Denial of Service in ASP.NET Vulnerability."

The weakness was shared 08/11/2009 by Alexander Pfandt (DiGiT) with Digitaria as MS09-036 as confirmed bulletin (Technet). The advisory is shared at microsoft.com. This vulnerability is known as CVE-2009-1536 since 05/05/2009. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

It is declared as attacked. The vulnerability scanner Nessus provides a plugin with the ID 40555 (MS09-036: Vulnerability in ASP.NET in Microsoft Windows Could Allow Denial of Service (970957)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 90520 (Microsoft Windows ASP.NET Denial of Service Vulnerability (MS09-036)).

Upgrading eliminates this vulnerability. Applying the patch MS09-036 is able to eliminate this problem. The bugfix is ready for download at microsoft.com. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 8382.

The vulnerability is also documented in the databases at X-Force (52114), Zero-Day.cz (385), Tenable (40555), SecurityFocus (BID 35985†) and OSVDB (56905†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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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: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Attacked

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 40555
Nessus Name: MS09-036: Vulnerability in ASP.NET in Microsoft Windows Could Allow Denial of Service (970957)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 801482
OpenVAS Name: Microsoft Windows ASP.NET Denial of Service Vulnerability(970957)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Zero-Day.cz: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: MS09-036
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

ISS Proventia IPS: 🔍
PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

05/05/2009 🔍
08/11/2009 +98 days 🔍
08/11/2009 +0 days 🔍
08/11/2009 +0 days 🔍
08/11/2009 +0 days 🔍
08/11/2009 +0 days 🔍
08/11/2009 +0 days 🔍
08/11/2009 +0 days 🔍
08/12/2009 +0 days 🔍
08/12/2009 +0 days 🔍
08/18/2009 +6 days 🔍
04/13/2025 +5717 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS09-036
Researcher: Alexander Pfandt (DiGiT)
Organization: Digitaria
Status: Confirmed

CVE: CVE-2009-1536 (🔍)
GCVE (CVE): GCVE-0-2009-1536
GCVE (VulDB): GCVE-100-4009

OVAL: 🔍
IAVM: 🔍

X-Force: 52114
SecurityFocus: 35985 - Microsoft ASP.NET Request Scheduling Denial Of Service Vulnerability
Secunia: 36127 - Microsoft .NET Framework Denial of Service Vulnerability, Moderately Critical
OSVDB: 56905 - Microsoft .NET Framework Request Scheduling Crafted HTTP Request Remote DoS
SecurityTracker: 1022715 - Microsoft ASP.NET Request Scheduling Flaw Lets Remote Users Deny Service
Vulnerability Center: 23188 - [MS09-036] Microsoft .NET Framework Remote DoS Vulnerability via Multiple HTTP Requests, High
Vupen: ADV-2009-2231

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

Entryinfo

Created: 08/18/2009 18:12
Updated: 04/13/2025 21:50
Changes: 08/18/2009 18:12 (91), 02/13/2017 10:06 (13), 03/17/2021 12:13 (3), 07/19/2024 02:41 (23), 04/13/2025 21:50 (2)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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