#VU2747 Denial of service in Microsoft products - CVE-2009-1536

Vulnerability identifier: #VU2747

Vulnerability risk: High

CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:A/U:Amber

CVE-ID: CVE-2009-1536

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
Windows
Windows Server
Microsoft .NET Framework

Software vendor:
Microsoft

The 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

• https://technet.microsoft.com/en-us/library/security/ms09-036.aspx