Package Instance

XWiki Platform Improper Authorization check for inactive users
### Impact

Some resources are missing a check for inactive (not yet activated or disabled) users in XWiki, including the REST service: so a disabled user can enable themselves using a REST call. On the same way some resources handler created by extensions are not protected by default: so an inactive users could perform actions for such extensions.

This issue exists since at least version 1.1 of XWiki for instance configured with the email activation required for new users. Now it's more critical for newer versions (>= 11.3RC1) since we provided the capability to disable user without deleting them, and we encouraged using that feature.

### Patches

This issue has been patched in XWiki 14.3RC1 and XWiki 13.10.5. 

### Workarounds

There is no workaround for this other than upgrading XWiki. 

### References

 * https://jira.xwiki.org/browse/XWIKI-19559

### For more information
If you have any questions or comments about this advisory:
* Open an issue in [Jira XWiki.org](https://jira.xwiki.org)
* Email us at [security mailing-list](mailto:security@xwiki.com)

XWiki Platform Old Core vulnerable to Authentication Bypass Using the Login Action
### Impact
All rights checks that would normally prevent a user from viewing a document on a wiki can be bypassed using the login action and directly specified templates. This exposes title, content and comments of any document and properties of objects (class and property name must be known, though). This is also exploitable on [private wikis](https://www.xwiki.org/xwiki/bin/view/Documentation/AdminGuide/Access%20Rights/#HPrivateWiki).

### Patches
This has been patched in versions 14.2 and 13.10.4 by properly checking view rights before loading documents and disallowing non-default templates in the login, registration and skin action.

### Workarounds
It would be possible to protect all templates individually by adding code to check access rights first, but due to the number of templates and the fact that some of them need to be used without view rights, this seems impractical.

### References
* https://jira.xwiki.org/browse/XWIKI-19549
* https://jira.xwiki.org/browse/XWIKI-18602

### For more information
If you have any questions or comments about this advisory:
* Open an issue in [Jira XWiki.org](https://jira.xwiki.org/)
* Email us at [security mailing-list](mailto:security@xwiki.com)

XWiki Platform vulnerable to privilege escalation via properties with wiki syntax that are executed with wrong author
XWiki Platform is a generic wiki platform. Starting in version 13.10, it's possible to use the right of an existing document content author to execute a text area property. This has been patched in XWiki 14.10, 14.4.7, and 13.10.11. There are no known workarounds.