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Posted to issues@nifi.apache.org by "David Handermann (Jira)" <ji...@apache.org> on 2021/02/25 22:39:00 UTC
[jira] [Reopened] (NIFI-1465) Upgrade encryption of sensitive
properties
[ https://issues.apache.org/jira/browse/NIFI-1465?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
David Handermann reopened NIFI-1465:
------------------------------------
> Upgrade encryption of sensitive properties
> ------------------------------------------
>
> Key: NIFI-1465
> URL: https://issues.apache.org/jira/browse/NIFI-1465
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework
> Affects Versions: 0.5.0
> Reporter: Andy LoPresto
> Assignee: David Handermann
> Priority: Major
> Labels: encryption, security
> Fix For: 1.14.0
>
> Original Estimate: 120h
> Remaining Estimate: 120h
>
> Currently, NiFi accepts a password and encryption algorithm in {{nifi.properties}} which are used to encrypt all sensitive processor properties throughout the application. The password defaults to empty and the algorithm defaults to {{PBEWITHMD5AND256BITAES-CBC-OPENSSL}}. This algorithm:
> * uses a digest function ({{MD5}}) which is not cryptographically secure [1][2][3][4]
> * uses a single iteration count [5][6]
> * limits password input to 16 characters on JVMs without the unlimited strength cryptographic jurisdiction policy files installed [NIFI-1255]
> all of which combine to make it extremely insecure. We should change the default algorithm to use a strong key derivation function (KDF) [7] which will properly derive a key to protect the sensitive properties.
> Because existing systems have already encrypted the properties using a key derived from the original settings, we should provide a translation/upgrade utility to seamlessly convert the stored values from the old password & algorithm combination to the new.
> [1] http://security.stackexchange.com/a/19908/16485
> [2] http://security.stackexchange.com/a/31846/16485
> [3] http://security.stackexchange.com/questions/52461/how-weak-is-md5-as-a-password-hashing-function
> [4] http://security.stackexchange.com/a/31410/16485
> [5] http://security.stackexchange.com/a/29139/16485
> [6] https://www.openssl.org/docs/manmaster/crypto/EVP_BytesToKey.html
> [7] https://cwiki.apache.org/confluence/display/NIFI/Key+Derivation+Function+Explanations
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