[jira] Updated: (WW-2030) User input is evaluated as an OGNL expression

["Antonio Petrelli (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/struts/browse/WW-2030?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Antonio Petrelli updated WW-2030:
---------------------------------

    Description: 
All user input, for example entered through a form, is evaluated as an OGNL expression.
This leads to a remote exploit of possible malicious code execution of any kind, such as server shutdown or information theft.

Moreover, it can lead to a DoS problem:
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.



  was:
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.



        Summary: User input is evaluated as an OGNL expression  (was: DOS (continuos memory eating on an infinte loop) on form fields)

Changed title and description to be clearer.

> User input is evaluated as an OGNL expression
> ---------------------------------------------
>
>                 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
>         Attachments: Struts.diff, Struts2.diff, translateVariable.txt, translateVariable2.txt, xwork.diff, xwork2.diff
>
>
> All user input, for example entered through a form, is evaluated as an OGNL expression.
> This leads to a remote exploit of possible malicious code execution of any kind, such as server shutdown or information theft.
> Moreover, it can lead to a DoS problem:
> 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.

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