sylus commented on issue #384:
URL: https://github.com/apache/solr-operator/issues/384#issuecomment-994173078
Although this was mentioned in the mailing list:
> Re: Log4j < 2.15.0 may still be vulnerable even if
-Dlog4j2.formatMsgNoLookups=true is set
The MDC Patterns used by solr are for the collection, shard, replica, core
and node names, and a potential trace id. All of those are restricted to
alphanumeric, no special characters like $ or { needed for the injection.
And trying to access a collection that didn’t exist Returns 404 without
logging.
Upgrading is always going to be more complete, but I think we’re still ok
for now, at least until the next iteration of this attack surfaces.
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