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List:       struts-dev
Subject:    [jira] [Resolved] (WW-4451) OgnlRuntime not threadsafe
From:       "Jasper Rosenberg (JIRA)" <jira () apache ! org>
Date:       2015-03-20 15:08:38
Message-ID: JIRA.12769337.1421941134000.157220.1426864118877 () Atlassian ! JIRA
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     [ https://issues.apache.org/jira/browse/WW-4451?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel \
]

Jasper Rosenberg resolved WW-4451.
----------------------------------
    Resolution: Fixed

Moved to 2.5

> OgnlRuntime not threadsafe
> --------------------------
> 
> Key: WW-4451
> URL: https://issues.apache.org/jira/browse/WW-4451
> Project: Struts 2
> Issue Type: Bug
> Components: Value Stack
> Affects Versions: 2.3.20
> Reporter: Jasper Rosenberg
> Assignee: Lukasz Lenart
> Priority: Critical
> Fix For: 2.5
> 
> 
> Access to _methodAccessCache and _methodPermCache is not thread-safe.  Ognl 4.0 \
> actually addresses this by using a ConcurrentHashMap.  Twice in the last couple of \
> years we have had a server die shortly after startup because of this issue.   \
> Simplest fix is to just replace the uses of IntHashMap with \
> ConcurrentHashMap<Integer, Boolean> (assuming ognl doesn't have to support java 4) \
> Alternatively, you could probably get away with the same solution used to protect \
> uses of cacheSetMethod (though it isn't strictly correct since someone could still \
> be calling get on cacheSetMethod in parallel to a put and get the wrong result).



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