Signature Detail

HTTP: Microsoft Internet Explorer IESHIMS.DLL Insecure Library Loading

This signature detects attempts to exploit a known remote code execution vulnerability in Microsoft Internet Explorer. It is due to a design weakness in loading Dynamically Linked Libraries. Remote attackers can exploit this by enticing target users to download a malicious "IESHIMS.DLL" file. A successful attack can result in loading the attacker-controlled library and execution of arbitrary code with the privileges of the logged-in user. If a user is logged-on with administrative user rights, an attacker can take complete control of the affected system.

Extended Description

Microsoft Internet Explorer is prone to 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 that contains a specially crafted Dynamic Link Library (DLL) file.

Affected Products

• Avaya Aura Conferencing 6.0 SP1 Standard
• 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 - 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 Internet Explorer 8

References

• BugTraq: 46159
• CVE: CVE-2011-0038