Finding Confluence servers with Rumble
The U.S. Cyber Command recently reported “mass exploitation” of a code execution vulnerability in Atlassian’s popular Confluence software (CVE-2021-26084). This vulnerability has a CVSS Base score of 9.8 (considered “critical”), requires no authentication for exploitation, and affects many on-prem versions of the product (Atlassian says that Confluence Cloud customers are not affected). Public reports of exploitation are surfacing, including a Confluence instance of the Jenkins project compromised for cryptomining purposes.
Atlassian has provided fixed versions that on-prem Confluence admins should upgrade to as soon as possible, as well as mitigations for those who cannot upgrade immediately. As an aside, there have been some interesting events around the leaking of a private exploit PoC during disclosure with a vulnerable party.
From the Services Inventory, use the following pre-built query to locate systems in your network that are running Confluence:
_asset.protocol:http AND has:http.head.xConfluenceRequestTime
Don’t have Rumble and need help finding your Confluence servers? Start your Rumble trial today.
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