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From "Uwe Schindler (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (SOLR-2631) PingRequestHandler can infinite loop if called with a qt that points to itsself
Date Sat, 02 Jul 2011 09:05:28 GMT

     [ https://issues.apache.org/jira/browse/SOLR-2631?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Uwe Schindler resolved SOLR-2631.
---------------------------------

    Resolution: Fixed

Committed trunk revision: 1142179
Merged 3.x revision: 1142180

Thanks Edoardo!

> PingRequestHandler can infinite loop if called with a qt that points to itsself
> -------------------------------------------------------------------------------
>
>                 Key: SOLR-2631
>                 URL: https://issues.apache.org/jira/browse/SOLR-2631
>             Project: Solr
>          Issue Type: Bug
>          Components: search, web gui
>    Affects Versions: 1.4, 3.1, 3.2, 3.3
>            Reporter: Uwe Schindler
>            Assignee: Uwe Schindler
>              Labels: security
>             Fix For: 3.4, 4.0
>
>         Attachments: SOLR-2631.patch
>
>
> We got a security report to private@lucene.apache.org, that Solr can infinite loop, use
100% CPU and stack overflow, if you execute the following HTTP request: 
> - http://localhost:8983/solr/select?qt=/admin/ping
> - http://localhost:8983/solr/admin/ping?qt=/admin/ping
> The qt paramter instructs PingRequestHandler to call the given request handler. This
leads to an infinite loop. This is not an security issue, but for an unprotected Solr server
with unprotected /solr/select path this makes it stop working.
> The fix is to prevent infinite loop by disallowing calling itsself.

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