CVE-2023-29513
xwiki-platform-web-templates allows users to be created even when registration is disabled without validation via template macro
Description
### Impact If a guest has view rights on any document, it's possible to create a new user using the `distribution/firstadminuser.wiki` in the wrong context. To reproduce: * On a wiki with view rights for guests but user registration disabled, open as guest <server>/xwiki/bin/view/Main?sheet=CKEditor.HTMLConverter&language=en&sourceSyntax=xwiki%2F2.1&stripHTMLEnvelope=true&fromHTML=false&toHTML=true&text=%7B%7Btemplate+name%3D%22distribution%2Ffirstadminuser.wiki%22+%2F%7D%7D where <server> is the URL of your XWiki installation. * Enter username and password of your choice. * Click "Register and login" ### Patches The vulnerability has been patched in XWiki 15.0-rc-1 and 14.10.1. ### Workarounds There is no known workaround other than upgrading. ### References https://jira.xwiki.org/browse/XWIKI-19852 https://jira.xwiki.org/browse/XWIKI-20400 ### 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.org)
How to fix CVE-2023-29513
To remediate CVE-2023-29513, upgrade the affected package to a fixed version below.
- —upgrade to 14.10.1 or later
Is CVE-2023-29513 being exploited?
Low — EPSS is 1.6%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 8.0-rc-1, < 14.10.1