The Macrovision / InstallShield Update Service Web Agent ActiveX control contains buffer overflows, which could allow an attacker to execute arbitrary code on a vulnerable system.
The InstallShield Update Service, now known as Macrovision FLEXnet Connect, contains an ActiveX control called Update Service Agent. This ActiveX control is a component that is included with some Macrovision and InstallShield Windows software installers and is provided by the file isusweb.dll. The Update Service Agent ActiveX control contains buffer overflow vulnerabilities in the Download() and DownloadAndExecute() methods.
By convincing a user to view a specially crafted HTML document (e.g., a web page or an HTML email message or attachment), an attacker may be able to execute arbitrary code with the privileges of the user. The attacker could also cause Internet Explorer (or the program using the WebBrowser control) to crash.
Apply an update
This issue is addressed in the FLEXnet Connect 6.0 Security Patch, which is available in the Acresso support document Q113020. This update addresses the buffer overflows and removes the "Safe for Scripting" setting of the vulnerable control, which prevents the control from being scripted by Internet Explorer. Because the vulnerable control may be provided to end-users who do not have the FLEXnet Connect SDK installed, please consider the following workarounds:
This vulnerability was reported by Dan Plakosh of the Software Engineering Institute.
This document was written by Will Dormann.
|Date First Published:||2007-02-22|
|Date Last Updated:||2009-04-13 17:18 UTC|