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Date: Mon, 10 Feb 2020 13:49:30 -0800
From: Andy LoPresto <>
Subject: CVE-2020-1942: Apache NiFi 0.0.1 to 1.11.0 information disclosure in logs

The <> page has been updated with 1 vulnerability discovered in previous NiFi versions which has been resolved in release 1.11.1. The severity of this issue was determined to be ‘important'. Questions about this vulnerability can be directed to <>.

CVE-2020-1942: Apache NiFi information disclosure in logs

Severity: Important

Versions Affected: Apache NiFi 0.0.1 - 1.11.0

Description: The flow fingerprint factory generated flow fingerprints which included sensitive property descriptor values. In the event a node attempted to join a cluster and the cluster flow was not inheritable, the flow fingerprint of both the cluster and local flow was printed, potentially containing sensitive values in plaintext.

Mitigation: Implemented Argon2 secure hashing to provide a deterministic loggable value which does not reveal the sensitive value. Users running any previous NiFi release should upgrade to the latest release.

Released: February 4, 2020

If you identify new security issues within the NiFi 1.11.1 release, please forward your report to <> and do not disclose the issue publicly. The security vulnerability reporting and disclosure process can be found here: <>.

Andy LoPresto
PGP Fingerprint: 70EC B3E5 98A6 5A3F D3C4  BACE 3C6E F65B 2F7D EF69

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