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https://issues.apache.org/jira/browse/OFBIZ-11306?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17031966#comment-17031966
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Jacques Le Roux commented on OFBIZ-11306:
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bq. What if someone clears the cache through the webtools?
I'm still reviewing, as James wrote that I'll let him have the last words. In
dev and demo mode the CSRF defense should not be used, so not a concern there.
If in production for a reason you need to clear all caches, it's a problem. We
could use another LinkedHashMap of the same type than the UtilCache with
another removeEldestEntry method.
This said you can certainly clear all caches by hand. But, as long as you know
which cache/s you need tp clear, that would be a mistake and is not
recommended. If ever someone does that then, among other possible issues, all
the tokens will be lost and users in the middle of a request will have to get
another one by clicking on a link asking them to do so, not a good user
experience...The best way to clear cache/s is to clear only the cache/s that
you really need to clear.
> POC for CSRF Token
> ------------------
>
> Key: OFBIZ-11306
> URL: https://issues.apache.org/jira/browse/OFBIZ-11306
> Project: OFBiz
> Issue Type: Improvement
> Components: ALL APPLICATIONS
> Affects Versions: Upcoming Branch
> Reporter: James Yong
> Assignee: Jacques Le Roux
> Priority: Minor
> Labels: CSRF
> Fix For: Upcoming Branch
>
> Attachments: CsrfTokenAjaxTransform.java, CsrfTokenTransform.java,
> CsrfUtil.java, OFBIZ-11306-v2.patch, OFBIZ-11306.patch, OFBIZ-11306.patch,
> OFBIZ-11306.patch, OFBIZ-11306.patch, OFBIZ-11306.patch, OFBIZ-11306.patch,
> OFBIZ-11306.patch, OFBIZ-11306.patch, OFBIZ-11306.patch, OFBIZ-11306.patch,
> OFBIZ-11306.patch, OFBIZ-11306.patch, OFBIZ-11306.patch, OFBIZ-11306.patch,
> OFBIZ-11306_Plugins.patch, OFBIZ-11306_Plugins.patch,
> OFBIZ-11306_Plugins.patch, OFBIZ-11306_Plugins.patch,
> OFBIZ-11306_Plugins.patch
>
>
> CRSF tokens are generated using SecureRandom class (maybe later a JWT with a
> "time out").
> They are stored in the user sessions (for AJAX calls and unauthenticated HTTP
> calls) or OFBiz UtilCache (for authenticated HTTP calls), and verified during
> POST request.
> # In *controllers* a new csrf-token attribute is added to the security tag to
> exempt or force CSRF token check.
> # In *Widget Forms* a hidden token field is auto-generated.
> # In *FTL form* a CSRF token is passed through <@ofbizUrl> to automatise the
> change. Using <@ofbizUrl> macro to generate the CSRF token means there is no
> need to manually add the CSRF token field to each form in the ftl files. It
> will save time for users doing custom implementation and maintenance. While
> there is CSRF token in the form URL, the token is invalidated during form
> submission. So it's uniqueand harmless even though the CSRF token of the form
> submission is shown in the browser address bar.
> # For *Ajax calls* an ajaxPrefilter function (observer on DOM ready) is added
> through OfbizUtil.js (itself called at start in decorators and such)
> # The html metadata is storing the csrf token used by JQuery AJAX. This token
> will not change to another value after it is consumed
> # Csrf tokens for the user are removed from the UtilCache when the user logs
> out or session invalidated.
> The general rule are as follows:
> * RequestMap configured with 'get' method will be exempted from CSRF token
> check.
> * RequestMap configured with 'post' or 'all' method will be subjected to CSRF
> token check. (Note there are discussions that RequestMap with ‘all’ method
> should also not be subjected to CSRF token check. This will be done after
> ensuring a separate uri is used when posting changes.)
> * "main" request URIs are exempted from CSRF token check.
> * Setting csrf-token to false or true on the Request Map will override the
> general rules above.
> To implement:
> * -Allow token map size to be configurable in properties.- OK that's done
> locally
> To Discuss:
> * Invalidate authenticated user session when CSRF token check fails.
> * Configure the general rules in a Service method (which will be run inside
> the constructor of RequestMap class) when determining the final
> securityCsrfToken value.
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