[xwiki-devs] Security concerns

Hi everyone, I have played some more with Xwiki over the week-end, and some security issues came up, namely: 1) User own profile: Any given user has the right to edit his own profile, so far so good when the given user is in normal mode and the edit defaults to the inline form. Now things get ugly when he switches to the advanced mode and suddenly can add/update/delete objects and rights. For example he can delete his Xwiki.users object and instantly completely break his account. He can mess up with permissions, like granting others permissions to his profile. I am using a custom authentication/sso mechanism and when I create the user on the fly, I among other things, store the userId from our system into the XWiki.users (added one Int property). Suddenly, the user can even change that value... He can also rename his profile, effectively renaming his username... which in a sandbox environment might not be too much of an issue, even if I find it a little weird that users can change their identity on their owns as often they want but when the wiki system in coupled with another system, it's just a disaster... 2) User in advanced mode Generally speaking, users in advanced mode seems to be able to do things that I didnt foresee with just the edit permission : - I could grant myself the delete permission on pretty much any page I have edit permission and therefore deleting the pages - I could add/update/delete pretty much any objects on any page I have edit permission including XWiki.XWikiRights instances which seems to cover the ACL specific to the page. I granted there myself programming rights, it does not seem to work however the ACL is saved just fine... Regarding the ACL, I strongly suggest that on the Access Rights page, when the permission is blank (delegating upstream), the given permission should be still visible (with a tooltip indicating from where the permission has been inherited), maybe in parenthesis just after the checkmark box. It is crucial that on any page/space/wiki, an admin is able to review the effective permissions of that given page/space/wiki. Otherwise, it makes reviewing permissions a nightmare really quickly. 3) HTML macro This is more a question on the best way to make sure the HTML macro will filter out specific stuff to prevent script injection ? From what I understand, the macro cannot be removed at the moment but I am not sure what is the best way to secure it. Regarding 1 & 2, hopefully I am overlooking something but I looked around and could not find any thing obvious. Using Xwiki Enterprise 5.1 Thanks in advance for your help ! -- Chris