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From "A B (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (DERBY-2131) External DTD files are accessed without a privileged block when Derby parses XML values that reference such DTDs.
Date Fri, 01 Dec 2006 00:23:22 GMT
     [ http://issues.apache.org/jira/browse/DERBY-2131?page=all ]

A B resolved DERBY-2131.
------------------------

    Resolution: Fixed
    Derby Info:   (was: [Patch Available])

derbyall and suites.All both ran without errors and there were no objections to the posted
patch, so I committed d2131_v1.patch with svn 481117.

> External DTD files are accessed without a privileged block when Derby parses XML values
that reference such DTDs.
> -----------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-2131
>                 URL: http://issues.apache.org/jira/browse/DERBY-2131
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.2.1.6, 10.3.0.0, 10.2.2.0, 10.2.1.8
>            Reporter: A B
>         Assigned To: A B
>         Attachments: d2131_v1.patch
>
>
> The Derby XMLPARSE operator ultimately makes a call to an external JAXP parser (ex. Xerces
or Crimson) to parse an XML value.  If the XML value that is being parsed references an external
DTD, then the JAXP parser will need to read the DTD file to complete parsing.  However, the
current code in SqlXmlUtil.java does not use a privileged block when it calls out to the JAXP
parser.  As a result, when a user who is running with a security manager tries to insert a
document that references an external DTD, the call to XMLPARSE will fail with a security exception--even
if the JAXP parser has the required "read" permissions.

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