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https://issues.apache.org/jira/browse/DERBY-6648?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14110590#comment-14110590
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Knut Anders Hatlen commented on DERBY-6648:
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Won't the doPrivileged() call in checkDerbyInternalsPrivilege() prevent the
check from having any effect? As long as derby.jar has been granted the
"usederbyinternals" privilege, I'm still able to run
ContextService.getContextOrNull() from unprivileged application code, it seems.
> Application code should not be able to call ContextService.getContextOrNull()
> -----------------------------------------------------------------------------
>
> Key: DERBY-6648
> URL: https://issues.apache.org/jira/browse/DERBY-6648
> Project: Derby
> Issue Type: Bug
> Components: Services
> Affects Versions: 10.11.1.1
> Reporter: Rick Hillegas
> Attachments: derby-6648-01-aa-oneActionList.diff
>
>
> By calling ContextService.getContextOrNull() (and its relatives), application
> code can get its hands on all sorts of internal Derby contexts, factories,
> and managers. This allows application code to bypass SQL authorization checks
> and perform sensitive or data-corrupting actions.
> For instance, right now an application can use this method to get its hands
> on the language connection context. From the lcc, the application can get its
> hands on the data dictionary and the execution transaction. Armed with those
> objects, the application can bypass authorization checks and create schema
> objects, users, and permissions.
> Only Derby code should be able to call this powerful method.
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