October 12, 2004
An unspecified vulnerability exists in the Microsoft Internet Explorer Heartbeat MSN gaming ActiveX control (Hrtbeat.ocx).
- Avaya DefinityOne Media Servers
- Avaya IP600 Media Servers
- Avaya Modular Messaging (MSS) 1.1.0
- Avaya Modular Messaging (MSS) 2.0.0
- Avaya S3400 Message Application Server
- Avaya S8100 Media Servers
- Microsoft Internet Explorer 5.0.1
- Microsoft Internet Explorer 5.0.1 SP1
- Microsoft Internet Explorer 5.0.1 SP2
- Microsoft Internet Explorer 5.0.1 SP3
- Microsoft Internet Explorer 5.0.1 SP4
- Microsoft Internet Explorer 5.5
- Microsoft Internet Explorer 5.5 SP1
- Microsoft Internet Explorer 5.5 SP2
- Microsoft Internet Explorer 6.0
- Microsoft Internet Explorer 6.0 SP1
- Microsoft Internet Explorer 6.0 SP2 - do not use
Run all software as a nonprivileged user with minimal access rights.
Perform all non-administrative activities as an unprivileged user with minimal access rights. This will limit the impact of client-side vulnerabilities.
Do not follow links provided by unknown or untrusted sources.
Web users should be wary of visiting sites of questionable integrity or following links provided by unfamiliar or untrusted sources.
Set web browser security to disable the execution of script code or active content.
Disable support for client-side scripting and Active Content in the Web browser Internet Zone. This may limit exposure to this and other client-side vulnerabilities.
Microsoft has released a cumulative update for supported versions of Internet Explorer to address this and other vulnerabilities.
Avaya has released an advisory that acknowledges this vulnerability for Avaya products. Customers are advised to follow Microsoft.s guidance for applying patches. Please see the referenced Avaya advisory at the following location for further details:
Discovery is credited to John Heasman from Next Generation Security Software.
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