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24 lines
1.9 KiB
Markdown
24 lines
1.9 KiB
Markdown
# Improvements to Java analysis
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The following changes in version 1.23 affect Java analysis in all applications.
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## Changes to existing queries
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| **Query** | **Expected impact** | **Change** |
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|------------------------------|------------------------|-----------------------------------|
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| Dereferenced variable may be null (`java/dereferenced-value-may-be-null`) | Fewer false positives | Certain indirect null guards involving two auxiliary variables known to be equal can now be detected. |
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| Non-synchronized override of synchronized method (`java/non-sync-override`) | Fewer false positives | Results are now only reported if the immediately overridden method is synchronized. |
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| Query built from user-controlled sources (`java/sql-injection`) | More results | The query now identifies arguments to `Statement.executeLargeUpdate` and `Connection.prepareCall` as SQL expressions sinks. |
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| Query built from local-user-controlled sources (`java/sql-injection-local`) | More results | The query now identifies arguments to `Statement.executeLargeUpdate` and `Connection.prepareCall` as SQL expressions sinks. |
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| Query built without neutralizing special characters (`java/concatenated-sql-query`) | More results | The query now identifies arguments to `Statement.executeLargeUpdate` and `Connection.prepareCall` as SQL expressions sinks. |
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## Changes to QL libraries
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* The data-flow library has been extended with a new feature to aid debugging.
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Instead of specifying `isSink(Node n) { any() }` on a configuration to
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explore the possible flow from a source, it is recommended to use the new
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`Configuration::hasPartialFlow` predicate, as this gives a more complete
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picture of the partial flow paths from a given source. The feature is
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disabled by default and can be enabled for individual configurations by
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overriding `int explorationLimit()`.
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