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https://issues.apache.org/jira/browse/NIFI-4821?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pierre Villard resolved NIFI-4821.
----------------------------------
    Resolution: Fixed

> Upgrade to Apache POI 3.16 or newer
> -----------------------------------
>
>                 Key: NIFI-4821
>                 URL: https://issues.apache.org/jira/browse/NIFI-4821
>             Project: Apache NiFi
>          Issue Type: Improvement
>          Components: Extensions
>            Reporter: Joseph Witt
>            Assignee: Joseph Witt
>            Priority: Major
>             Fix For: 1.6.0
>
>
> CVE-2017-12626 was announced today with the text:
>  
> Title: CVE-2017-12626 – Denial of Service Vulnerabilities in Apache POI < 3.17
> Severity: Important
> Vendor: The Apache Software Foundation
> Versions affected: versions prior to version 3.17
> Description:   
>     Apache POI versions prior to release 3.17 are vulnerable to Denial of 
> Service Attacks:
>     * Infinite Loops while parsing specially crafted WMF, EMF, MSG and macros
>           (POI bugs 61338 [0] and 61294 [1])
>     * Out of Memory Exceptions while parsing specially crafted DOC, PPT and 
> XLS 
>           (POI bugs 52372 [2] and 61295 [3])
> Mitigation:  Users with applications which accept content from external or 
> untrusted sources are advised to upgrade to Apache POI 3.17 or newer.
> -Tim Allison
> on behalf of the Apache POI PMC
>  
> [0] [https://bz.apache.org/bugzilla/show_bug.cgi?id=61338]
> [1] [https://bz.apache.org/bugzilla/show_bug.cgi?id=61294]
> [2] [https://bz.apache.org/bugzilla/show_bug.cgi?id=52372]
> [3] [https://bz.apache.org/bugzilla/show_bug.cgi?id=61295]



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