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https://issues.apache.org/jira/browse/NIFI-6178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16812718#comment-16812718
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Jeff Storck commented on NIFI-6178:
-----------------------------------
The changes for this PR have been cherry-picked from [PR
3404|https://github.com/apache/nifi/pull/3404] into [PR
3416|https://github.com/apache/nifi/pull/3416].
> Certificates generated for "localhost" need to have IP as a SAN in Java 11
> --------------------------------------------------------------------------
>
> Key: NIFI-6178
> URL: https://issues.apache.org/jira/browse/NIFI-6178
> Project: Apache NiFi
> Issue Type: Bug
> Components: Security, Tools and Build
> Affects Versions: 1.9.1
> Reporter: Jeff Storck
> Assignee: Jeff Storck
> Priority: Blocker
> Labels: Java11
> Time Spent: 20m
> Remaining Estimate: 0h
>
> While running tests in {{nifi-standard-processors}} with JDK 11, several
> tests failed with the following error after enabling
> {{javax.net.debug=ssl,handshake}}:
> {code:java}
> javax.net.ssl|ERROR|1B|ListenHTTP (07d9bfd1-56c3-46f1-b4a7-570eaf13c7cc) Web
> Server-27|2019-04-02 17:44:57.177 EDT|TransportContext.java:313|Fatal
> (CERTIFICATE_UNKNOWN): No subject alternative names matching IP address
> 127.0.0.1 found (
> "throwable" : {
> java.security.cert.CertificateException: No subject alternative names
> matching IP address 127.0.0.1 found
> {code}
> It appears that when using a cert for {{localhost}} the hostname is resolved
> to 127.0.0.1, after which the existing SANs in the cert are checked for a
> matching IP SAN.
> The TLS Toolkit currently generates certs with SANs assumed to be domain
> names
> ([TlsHelper.java:305|https://github.com/apache/nifi/blob/master/nifi-toolkit/nifi-toolkit-tls/src/main/java/org/apache/nifi/toolkit/tls/util/TlsHelper.java#L305],
> uses GeneralName.dNSName explicitly). Adding the IP as a SAN with the TLS
> Toolkit currently adds it as a DNS SAN, which does not resolve the issue.
> Support must be added to allow IPs to be added as SANs.
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