[
https://issues.apache.org/struts/browse/WW-2030?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_41371
]
Lukasz Racon commented on WW-2030:
----------------------------------
Unfortunately beside being DOS it is indeed a remote exploit. You have an
access to whole stack and actually if you know OGNL well enough you can easily
do almost anything. Just tested reading a file from file system, it worked:(
> DOS (continuos memory eating on an infinte loop) on form fields
> ---------------------------------------------------------------
>
> Key: WW-2030
> URL: https://issues.apache.org/struts/browse/WW-2030
> Project: Struts 2
> Issue Type: Bug
> Components: Value Stack
> Affects Versions: 2.0.8
> Reporter: Andrea Vettori
> Priority: Critical
>
> On a form with
> <s:textfield name="xxx">
> if the user enters %{xxx} as the value then
> com/opensymphony/xwork2/util/TextParseUtil.translateVariables enters an
> infinite loop eating about 1GB of ram in one second on my server.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
