CASSANDRA-21670 Remove Cassandra's requirement for the Java security manager - #5139
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Add a selectable bytecode sandbox for user-defined functions. Preserve Java Management Extensions subject propagation on newer runtimes. patch by Jeremiah Jordan; reviewed by <Reviewer Here> for CASSANDRA-##### Assisted-by: Codex:GPT-6
smiklosovic
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smiklosovic
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September 15, 2026 15:44
smiklosovic
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Sep 15, 2026
| # INFO level | ||
| # UDFs (user defined functions) are disabled by default. | ||
| # As of Cassandra 3.0 there is a sandbox in place that should prevent execution of evil code. | ||
| # Cassandra disables user-defined functions (UDFs) by default. |
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change this in cassandra_latest.yaml too
smiklosovic
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Sep 15, 2026
| For example, add `-Dcassandra.udf.security_mechanism=sandbox` to the JVM options to select the sandbox. | ||
| Use a JDK version that Cassandra supports. | ||
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| The bytecode sandbox rejects restricted calls when Cassandra creates a function. |
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This whole section feels like AI stuff. I can imagine the prompt "be concise as possible, no fluff" and this is the result :)
smiklosovic
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Sep 15, 2026
| * {@code securitymanager} requires it. | ||
| * With {@code securitymanager}, {@link #install()} fails on JDK 24 and later. | ||
| */ | ||
| public static boolean useSecurityManager() |
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should be isUsingSecurityManager
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Add a selectable bytecode sandbox for user-defined functions. Preserve Java Management Extensions subject propagation on newer runtimes.