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Thoughts on Exploiting a Remote WMI Query Vulnerability

On December 1, 2015, a really interesting vulnerability was disclosed in the Dell Foundation Services software. If installed, a SOAP service will listen on port 7779 and grant an attacker the ability to execute unauthenticated WMI queries. I can’t say I’ve ever encountered such a vulnerability class so this posed an interesting thought exercise into how an attacker might effectively exploit such a vulnerability beyond just using the queries to conduct host recon. Specifically, this vulnerability only allows an attacker to query WMI object instances within the default namespace – ROOT/CIMv2. This means that you cannot invoke WMI methods or perform event registration - i.e. this is not a remote code execution vulnerability.

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