Microsoft VBScript CVE-2015-0032 Remote Code Execution Vulnerability

Description

Microsoft VBScript is prone to a remote code-execution vulnerability. An attacker can exploit this issue to execute arbitrary code in the context of the user running the affected application. Failed exploit attempts will likely result in denial-of-service conditions.

Technologies Affected

• Avaya CallPilot 4.0
• Avaya CallPilot 4.0.1
• Avaya CallPilot 5.0
• Avaya CallPilot 5.0.1
• Avaya CallPilot 5.1.0
• 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 - Client Registration Server 6.0
• Avaya Meeting Exchange - Client Registration Server 6.2
• 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 - Recording Server 6.0
• Avaya Meeting Exchange - Recording Server 6.2
• 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 - Streaming Server 6.0
• Avaya Meeting Exchange - Streaming Server 6.2
• 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 - Web Conferencing Server 6.0
• Avaya Meeting Exchange - Web Conferencing Server 6.2
• 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 Meeting Exchange - Webportal 6.0
• Avaya Meeting Exchange - Webportal 6.2
• Avaya Messaging Application Server 5.0
• Avaya Messaging Application Server 5.0.1
• Avaya Messaging Application Server 5.2
• Microsoft Internet Explorer 10
• Microsoft Internet Explorer 11
• Microsoft Internet Explorer 8
• Microsoft Internet Explorer 9
• Microsoft VBScript 5.6
• Microsoft VBScript 5.7
• Microsoft VBScript 5.8

Recommendations

Run all software as a nonprivileged user with minimal access rights.
To limit the potential damage that successful exploits may achieve, run all nonadministrative software as an unprivileged user.

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.

Do not follow links provided by unknown or untrusted sources.
Attackers can exploit this vulnerability by enticing a user to visit a malicious website. Do not follow links provided by sources of questionable integrity. Filtering HTML from emails may help remove a possible vector for transmitting malicious links to users.

Set web browser security to disable the execution of JavaScript.
Since exploiting this issue allows malicious script code to run in web clients, consider disabling support for script code and active content within the client browser. Note that this mitigation tactic might adversely affect websites that rely on the execution of browser-based script code.

Do not open email messages from unknown or untrusted individuals.
Attackers could exploit this vulnerability through HTML email messages. Do not accept any email from sources of questionable integrity.

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