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https://issues.apache.org/jira/browse/XALANJ-2489?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12689503#action_12689503
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Bradley Wagner commented on XALANJ-2489:
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I'm wondering if it's possible to simply turn off specific extension types such
as Java Extensions. I would, for example, like to keep JavaScript Extensions
but totally turn off Java extensions.
Also, would love to see how you patched Xalan to use a custom SecurityManager
if this is something you got working.
> Limit the classes available as extensions
> -----------------------------------------
>
> Key: XALANJ-2489
> URL: https://issues.apache.org/jira/browse/XALANJ-2489
> Project: XalanJ2
> Issue Type: Improvement
> Security Level: No security risk; visible to anyone(Ordinary problems in
> Xalan projects. Anybody can view the issue.)
> Components: Xalan-extensions
> Environment: xalan-java
> Reporter: Johan Zxcer
> Priority: Minor
>
> It would be very useful to be able to limit the set of java classes that are
> available to Xalan for extension functions. This is important when using
> Xalan within a larger application with non-secure style-sheet definitions, as
> a malevolent user could create a style-sheet to access any class within the
> larger application. Currently the only ways to use Xalan securely within a
> larger application is to entirely turn extension functions off, or to
> sequester Xalan to a separate process/thread with a tightened security policy.
> It appears the best way to do this would be to use the Java Security
> Framework, as it is already used to determine what classes can be accessed;
> it is simply not exposed in the API. Allowing either the SecurityManager or
> ClassLoader to be specified for a Transformer (or factory), to be used to in
> place of the global ones, would probably be the best solution.
> Mailing-list thread:
> http://marc.info/?l=xalan-j-users&m=123595553514572&w=2
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