Microsoft .NET Framework CVE-2012-2519 DLL Loading Arbitrary Code Execution Vulnerability

Description

Microsoft .NET Framework is prone to a vulnerability that lets attackers execute arbitrary code. An attacker can exploit this issue by enticing a legitimate user to use the vulnerable application to open a file from a network share location which contains a specially crafted Dynamic Link Library (DLL) file. Attackers can exploit this issue remotely by placing the files in a remotely accessible SMB or WebDAV share location. Successful exploits will compromise the application in the context of the currently logged-in user.

Technologies Affected

• Avaya CallPilot 4.0
• Avaya CallPilot 4.0.1
• Avaya CallPilot 5.0
• Avaya CallPilot 5.0.1
• Avaya Communication Server 1000 Telephony Manager 3.0
• Avaya Communication Server 1000 Telephony Manager 3.0.1
• Avaya Communication Server 1000 Telephony Manager 4.0
• Avaya Communication Server 1000 Telephony Manager 4.0.1
• Avaya Conferencing Standard Edition 6.0
• Avaya Conferencing Standard Edition 6.0 SP1
• Avaya Conferencing Standard Edition 6.0.1
• Avaya Meeting Exchange - Client Registration Server 5.0
• Avaya Meeting Exchange - Client Registration Server 5.0.1
• Avaya Meeting Exchange - Client Registration Server 5.2
• Avaya Meeting Exchange - Client Registration Server 5.2.1
• Avaya Meeting Exchange - Recording Server 5.0
• Avaya Meeting Exchange - Recording Server 5.0.1
• Avaya Meeting Exchange - Recording Server 5.2
• Avaya Meeting Exchange - Recording Server 5.2.1
• Avaya Meeting Exchange - Streaming Server 5.0
• Avaya Meeting Exchange - Streaming Server 5.0
• Avaya Meeting Exchange - Streaming Server 5.0.1
• Avaya Meeting Exchange - Streaming Server 5.2
• Avaya Meeting Exchange - Streaming Server 5.2.1
• Avaya Meeting Exchange - Web Conferencing Server 5.0
• Avaya Meeting Exchange - Web Conferencing Server 5.0.1
• Avaya Meeting Exchange - Web Conferencing Server 5.2
• Avaya Meeting Exchange - Web Conferencing Server 5.2.1
• Avaya Meeting Exchange - Webportal 5.0
• Avaya Meeting Exchange - Webportal 5.0.1
• Avaya Meeting Exchange - Webportal 5.2
• Avaya Meeting Exchange - Webportal 5.2.1
• Avaya Messaging Application Server 5.0
• Avaya Messaging Application Server 5.0.1
• Avaya Messaging Application Server 5.2
• Avaya Messaging Application Server 5.2.1
• Microsoft .NET Framework 1.0
• Microsoft .NET Framework 1.0 SP1
• Microsoft .NET Framework 1.0 SP2
• Microsoft .NET Framework 1.0 SP3
• Microsoft .NET Framework 1.1
• Microsoft .NET Framework 1.1 SP1
• Microsoft .NET Framework 2.0
• Microsoft .NET Framework 2.0 BETA
• Microsoft .NET Framework 2.0 SP2
• Microsoft .NET Framework 3.5
• Microsoft .NET Framework 3.5.1
• Microsoft .NET Framework 4.0

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.

Run all software as a nonprivileged user with minimal access rights.
To reduce the impact of latent vulnerabilities, always run nonadministrative software as an unprivileged user with minimal access rights.

Do not follow links provided by unknown or untrusted sources.
To reduce the likelihood of successful attacks, never follow links provided by unknown or untrusted individuals.

The vendor has released an advisory and updates. Please see the references for details.