Cluster Node Replication Vulnerability: Content-Length Header Timeout

CVE-2018-17194 · MEDIUM Severity

AV:N/AC:L/AU:N/C:N/I:N/A:P

When a client request to a cluster node was replicated to other nodes in the cluster for verification, the Content-Length was forwarded. On a DELETE request, the body was ignored, but if the initial request had a Content-Length value other than 0, the receiving nodes would wait for the body and eventually timeout. Mitigation: The fix to check DELETE requests and overwrite non-zero Content-Length header values was applied on the Apache NiFi 1.8.0 release. Users running a prior 1.x release should upgrade to the appropriate release.

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