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From "Tim Allison (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (TIKA-2731) Unecessary call to System.getProperties() in XMLReaderUtils
Date Fri, 21 Sep 2018 14:57:00 GMT

     [ https://issues.apache.org/jira/browse/TIKA-2731?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tim Allison reassigned TIKA-2731:
---------------------------------

    Assignee: Tim Allison

> Unecessary call to System.getProperties() in XMLReaderUtils
> -----------------------------------------------------------
>
>                 Key: TIKA-2731
>                 URL: https://issues.apache.org/jira/browse/TIKA-2731
>             Project: Tika
>          Issue Type: Improvement
>          Components: core
>    Affects Versions: 1.19
>            Reporter: Ioannis Kakavas
>            Assignee: Tim Allison
>            Priority: Major
>             Fix For: 1.20
>
>
> As part of the changes introduced in [1.19 |https://github.com/apache/tika/commit/4e67928412ad56333d400f3728ecdb59d07d9d63]
determineMaxEntityExpansions needs to read the jdk.xml.entityExpansionLimit System Property
in order to overwrite the default value of 20, if it is set. 
> This is however by reading all System Properties with System.getProperties() and attempting
to find the relevant key in the properties Object. The issue with this approach is that getProperties()
requires 
> {noformat}java.util.PropertyPermission "*", "read,write"{noformat}
> which is overly permissive.
> A more sane approach, following the least privilege design principal would be to use
System.getProperty() for the specific property that only requires 
> {noformat}java.util.PropertyPermission "jdk.xml.entityExpansionLimit", "read"{noformat}
>  



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