Microsoft .NET Framework CVE-2013-3861 Remote Denial of Service Vulnerability

Description

Microsoft .NET Framework is prone to a remote denial-of-service vulnerability. An attacker can exploit this issue to cause an application to crash or become unresponsive, denying service to legitimate users.

Technologies Affected

• Avaya Aura Conferencing Standard
• Avaya CallPilot
• Avaya Communication Server 1000 Telephony Manager
• Avaya Meeting Exchange - Client Registration Server
• Avaya Meeting Exchange - Recording Server
• Avaya Meeting Exchange - Streaming Server
• Avaya Meeting Exchange - Web Conferencing Server
• Avaya Meeting Exchange - Webportal
• Avaya Messaging Application Server
• Microsoft .NET Framework 2.0 SP2
• Microsoft .NET Framework 3.5
• Microsoft .NET Framework 3.5 SP1
• Microsoft .NET Framework 3.5.1
• Microsoft .NET Framework 4.0
• Microsoft .NET Framework 4.5

Recommendations

Block external access at the network boundary, unless external parties require service.
If global access isn’t needed, filter access to the affected computer at the network boundary. Restricting access to only trusted computers and networks might greatly reduce the likelihood of successful exploits.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to monitor network traffic for signs of anomalous or suspicious activity. This may indicate exploit attempts or activity that results from successful exploits.

Updates are available. Please see the references or vendor advisory for more information.