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https://issues.apache.org/jira/browse/CASSANDRA-18778?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17757653#comment-17757653
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Andy Tolbert commented on CASSANDRA-18778:
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My understanding of [CASSANDRA-18124] was that it was oriented towards allowing
{{keystore_password}} to be nullable for the
{{PEMBasedSslContextFactory}}-based implementation to allow null/empty
passwords, which it previously didn't. A side effect of this change was also
that the default {{FileBasedSslContextFactory}} was changed to additionally
validate the password to ensure it was non-null/empty[1]. This validation did
not previously exist, and since {{KeyStore}} does allow empty passwords, this
could be a regression for someone upgrading from 4.0 to 4.1.2+ where empty
password PKCS12 keystores were used. It's probably not a common use case, but
was something I encountered myself during testing.
[1]:
https://github.com/apache/cassandra/commit/bd49f6ff265c8bfa64bf140328ae6736dc4a87bd#diff-559a53285872c51f496ae3319425977f741ae2f3a359c2da674403294e17297e
> Empty keystore_password no longer allowed on encryption_options
> ---------------------------------------------------------------
>
> Key: CASSANDRA-18778
> URL: https://issues.apache.org/jira/browse/CASSANDRA-18778
> Project: Cassandra
> Issue Type: Bug
> Components: Local/Config
> Reporter: Andy Tolbert
> Assignee: Andy Tolbert
> Priority: Normal
> Fix For: 4.1.x, 5.0.x
>
>
> After CASSANDRA-18124 (introduced in 4.1.2 and 5.0) it is no longer possible
> to set an empty {{keystore_password}} under {{client_encryption_options}} or
> {{server_encryption_options}} using the default implementation
> {{{}DefaultSslContextFactory{}}}.
> While keytool does not allow generating keystores with empty passwords, it
> does support reading them. It is not uncommon to use PKCS12 certificates
> generated by other tools (eg. openssl) that do not enforce passwords.
> The fix for this should be pretty straightforward, which should involve
> changing
> [FileBasedSslContextFactory.validatePassword|https://github.com/apache/cassandra/blob/cassandra-4.1.2/src/java/org/apache/cassandra/security/FileBasedSslContextFactory.java#L128-L135]
> to only disallow null passwords (which would be consistent with previous
> versions). I will create pull requests against the relevant branches shortly.
> {noformat}
> Exception (org.apache.cassandra.exceptions.ConfigurationException)
> encountered during startup: Failed to initialize SSL
> org.apache.cassandra.exceptions.ConfigurationException: Failed to initialize
> SSL
> at
> org.apache.cassandra.config.DatabaseDescriptor.applySslContext(DatabaseDescriptor.java:1155)
> at
> org.apache.cassandra.config.DatabaseDescriptor.applyAll(DatabaseDescriptor.java:390)
> at
> org.apache.cassandra.config.DatabaseDescriptor.daemonInitialization(DatabaseDescriptor.java:204)
> at
> org.apache.cassandra.config.DatabaseDescriptor.daemonInitialization(DatabaseDescriptor.java:188)
> at
> org.apache.cassandra.service.CassandraDaemon.applyConfig(CassandraDaemon.java:804)
> at
> org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:747)
> at
> org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:875)
> Caused by: java.io.IOException: Failed to create SSL context using Native
> transport
> at
> org.apache.cassandra.security.SSLFactory.validateSslContext(SSLFactory.java:405)
> at
> org.apache.cassandra.config.DatabaseDescriptor.applySslContext(DatabaseDescriptor.java:1150)
> ... 6 more
> Caused by: java.lang.IllegalArgumentException: 'keystore_password' must be
> specified
> at
> org.apache.cassandra.security.FileBasedSslContextFactory.validatePassword(FileBasedSslContextFactory.java:133)
> at
> org.apache.cassandra.security.FileBasedSslContextFactory.buildKeyManagerFactory(FileBasedSslContextFactory.java:151)
> at
> org.apache.cassandra.security.AbstractSslContextFactory.createNettySslContext(AbstractSslContextFactory.java:181)
> at
> org.apache.cassandra.security.SSLFactory.createNettySslContext(SSLFactory.java:168)
> at
> org.apache.cassandra.security.SSLFactory.validateSslContext(SSLFactory.java:355)
> ... 7 more
> {noformat}
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