Signature Detail

HTTP: Microsoft Silverlight Double Free

This signature detects attempts to exploit a known vulnerability against Microsoft Silverlight. A string in XAML containing a certain number of special Hebrew characters could cause a double-free when the string is being rendered. A successful attack can lead to arbitrary code execution.

Extended Description

Microsoft Silverlight is prone to a remote code-execution vulnerability. An attacker can exploit this issue to execute arbitrary code with the privileges of the currently logged-in user. Failed exploit attempts will likely result in a denial-of-service condition.

Affected Products

• Avaya Aura Conferencing 6.0 Standard
• Avaya CallPilot 4.0
• Avaya CallPilot 5.0
• Avaya Communication Server 1000 Telephony Manager 3.0
• Avaya Communication Server 1000 Telephony Manager 4.0
• Avaya Meeting Exchange 5.0
• Avaya Meeting Exchange 5.0.0.0.52
• Avaya Meeting Exchange 5.0 SP1
• Avaya Meeting Exchange 5.0 SP2
• Avaya Meeting Exchange 5.1
• Avaya Meeting Exchange 5.1 SP1
• Avaya Meeting Exchange 5.2
• Avaya Meeting Exchange 5.2 SP1
• Avaya Meeting Exchange 5.2 SP2
• Avaya Meeting Exchange - Client Registration Server
• Avaya Meeting Exchange - Enterprise Edition
• Avaya Meeting Exchange - Recording Server
• Avaya Meeting Exchange - Streaming Server
• Avaya Meeting Exchange - Web Conferencing Server
• Avaya Meeting Exchange - Webportal
• Avaya Messaging Application Server 5
• Avaya Messaging Application Server 5.2
• Microsoft Silverlight 4.0

References

• BugTraq: 53360
• CVE: CVE-2012-0176