I'm kind of astounded that no official message - even just of acknowledgement - has been sent by Solarwinds to customers. Also, what rumors are you referring to? I haven't even seen an official list of affected products/versions. The article seems to indicate that something was piggybacked on update requests during a certain timeframe. Without more info, it's hard to do anything more refined than shut down the platform or remove all write privilege to service accounts.
Just logged a ticket with support. They indicate patches for 2019 and 2020 are coming 12/14 and 12/15 respectively. No other remediation steps available other than getting an updated .dll file from the Developers early. The updated .dll will be in the forthcoming patches.
Per Support:
Called Solarwinds support and the staff member answering the Tech Support line pretty much what is said here - two versions of the Orion Platform are impacted by the hack - 2019.4 and 2020.2. Earlier versions are not impacted. They also stated fixes are due out very soon - believe it was two or three at most.
Here is some more detailed information around the hack from fireeye site.
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