The Microsoft Speech API ActiveListen and ActiveVoice ActiveX controls contain multiple buffer overflows, which can allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.
Microsoft Speech API is a software package that provides text-to-speech and speech recognition capabilities. The Microsoft Speech API includes ActiveX controls called ActiveListen and ActiveVoice, which are provided by Xlisten.dll and XVoice.dll, respectively. These ActiveX controls contain multiple buffer overflow vulnerabilities.
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 by Microsoft Security Bulletin MS07-033. This update sets the kill bit for the vulnerable controls. Please also consider the following workarounds
Disable the Speech API ActiveX controls in Internet Explorer
This vulnerability was reported by Will Dormann of CERT/CC.
This document was written by Will Dormann.
|Date First Published:||2007-06-12|
|Date Last Updated:||2009-04-13 17:14 UTC|