Zero-day vulnerability in Microsoft .NET Framework

Denial of service

Vulnerability details

Advisory: SB2009081102 - Denial of service in Microsoft .NET Framework

Vulnerable component: Microsoft .NET Framework

CVE-ID: CVE-2009-1536

CVSSv3 score: 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

CWE-ID: CWE-20 - Improper input validation


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.