Denial of service in Microsoft .NET Framework
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2009-1536 |
| CWE-ID | CWE-20 |
| Exploitation vector | Network |
| Public exploit | This vulnerability is being exploited in the wild. |
| Vulnerable software Subscribe |
Windows Operating systems & Components / Operating system Windows Server Operating systems & Components / Operating system Microsoft .NET Framework Server applications / Frameworks for developing and running applications |
| Vendor | Microsoft |
Security Bulletin
This security bulletin contains one high risk vulnerability.
1) Denial of service
EUVDB-ID: #VU2747
Risk: High
CVSSv3.1: 5.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L/E:F/RL:O/RC:C]
CVE-ID: CVE-2009-1536
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to cause DoS conditions on the target system.
The weakness exists due to incorrect managing of request scheduling by ASP.NET. By sending multiple HTTP requests, a remote attacker can trigger the Web server to crash.
Successful exploitation of the vulnerability results in denial of service on the vulnerable system.
Note: the vulnerability was being actively exploited.
Install update from vendor's website:
Windows Vista:
Microsoft .NET Framework 2.0 Service Pack 1 and Microsoft .NET Framework 3.5:
https://www.microsoft.com/downloads/details.aspx?familyid=d42444bb-5030-4b47-87fa-9df3a8c640ff
Microsoft .NET Framework 2.0 Service Pack 2 and Microsoft .NET Framework 3.5 Service Pack 1:
https://www.microsoft.com/downloads/details.aspx?familyid=310f3aa6-c264-45a2-b24a-3f178b41830e
Microsoft .NET Framework 2.0 Service Pack 1 and Microsoft .NET Framework 3.5:
https://www.microsoft.com/downloads/details.aspx?familyid=cbf40800-f3b3-43da-ace1-d942d3378ccd
Microsoft .NET Framework 2.0 Service Pack 2 and Microsoft .NET Framework 3.5 Service Pack 1:
https://www.microsoft.com/downloads/details.aspx?familyid=87c4a868-b3b5-467d-96a4-633532ab548f
Microsoft .NET Framework 2.0 Service Pack 1 and Microsoft .NET Framework 3.5:
https://www.microsoft.com/downloads/details.aspx?familyid=d42444bb-5030-4b47-87fa-9df3a8c640ff
Microsoft .NET Framework 2.0 Service Pack 2 and Microsoft .NET Framework 3.5 Service Pack 1:
https://www.microsoft.com/downloads/details.aspx?familyid=310f3aa6-c264-45a2-b24a-3f178b41830e
Microsoft .NET Framework 2.0 Service Pack 1 and Microsoft .NET Framework 3.5:
https://www.microsoft.com/downloads/details.aspx?familyid=cbf40800-f3b3-43da-ace1-d942d3378ccd
Microsoft .NET Framework 2.0 Service Pack 2 and Microsoft .NET Framework 3.5 Service Pack 1:
https://www.microsoft.com/downloads/details.aspx?familyid=87c4a868-b3b5-467d-96a4-633532ab548f
Windows Server 2008:
Microsoft .NET Framework 2.0 Service Pack 1 and Microsoft .NET Framework 3.5:
https://www.microsoft.com/downloads/details.aspx?familyid=cbf40800-f3b3-43da-ace1-d942d3378ccd
Microsoft .NET Framework 2.0 Service Pack 2 and Microsoft .NET Framework 3.5 Service Pack 1:
https://www.microsoft.com/downloads/details.aspx?familyid=87c4a868-b3b5-467d-96a4-633532ab548f
Microsoft .NET Framework 2.0 Service Pack 1 and Microsoft .NET Framework 3.5:
https://www.microsoft.com/downloads/details.aspx?familyid=cbf40800-f3b3-43da-ace1-d942d3378ccd
Microsoft .NET Framework 2.0 Service Pack 2 and Microsoft .NET Framework 3.5 Service Pack 1:
https://www.microsoft.com/downloads/details.aspx?familyid=87c4a868-b3b5-467d-96a4-633532ab548f
Windows: Vista
Windows Server: 2008
Microsoft .NET Framework: 2.0 - 3.5
External linkshttp://technet.microsoft.com/en-us/library/security/ms09-036.aspx
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.
