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https://issues.apache.org/jira/browse/SPARK-10857?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14935518#comment-14935518
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Josh Rosen commented on SPARK-10857:
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Spark 1.5.0+ requires Java 7+, so it should be fine to use Java 7 features.
> SQL injection bug in JdbcDialect.getTableExistsQuery()
> ------------------------------------------------------
>
> Key: SPARK-10857
> URL: https://issues.apache.org/jira/browse/SPARK-10857
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.5.0
> Reporter: Rick Hillegas
> Priority: Minor
>
> All of the implementations of this method involve constructing a query by
> concatenating boilerplate text with a user-supplied name. This looks like a
> SQL injection bug to me.
> A better solution would be to call java.sql.DatabaseMetaData.getTables() to
> implement this method, using the catalog and schema which are available from
> Connection.getCatalog() and Connection.getSchema(). This would not work on
> Java 6 because Connection.getSchema() was introduced in Java 7. However, the
> solution would work for more modern JVMs. Limiting the vulnerability to
> obsolete JVMs would at least be an improvement over the current situation.
> Java 6 has been end-of-lifed and is not an appropriate platform for users who
> are concerned about security.
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