GHSA-gpq5-7p34-vqx5 XWiki Platform's async and display macro allow displaying and interacting with any document in restricted mode

• Maven org.xwiki.platform:xwiki-platform-oldcore: >= 10.11.1, < 13.10.11 → fixed in 13.10.11 • Maven org.xwiki.platform:xwiki-platform-oldcore: >= 14.0-rc-1, < 14.4.8 → fixed in 14.4.8 • Maven org.xwiki.platform:xwiki-platform-oldcore: >= 14.5, < 14.10.3 → fixed in 14.10.3 • Maven org.xwiki.platform:xwiki-platform-rendering-async-macro: >= 10.11.1, < 13.10.11 → fixed in 13.10.11 • Maven org.xwiki.platform:xwiki-platform-rendering-async-macro: >= 14.0-rc-1, < 14.4.8 → fixed in 14.4.8 • Maven org.xwiki.platform:xwiki-platform-rendering-async-macro: >= 14.5, < 14.10.3 → fixed in 14.10.3

Impact It's possible to display any page you cannot access through the combination of the async and display macro. Steps to reproduce: 1. Enable comments for guests by giving guests comment rights 2. As a guest, create a comment with content ```{{async}}{{display reference="Menu.WebHome" /}}{{/async}}``` 3. Open the comments viewer from the menu (appends ?viewer=comments to the URL) -> the `Menu.WebHome` is displayed while the expectation would be to have an error that the current user is not allowed to see it Patches The vulnerability has been patched in XWiki 15.0-rc-1, 14.10.3, 14.4.8, and 13.10.11. Workarounds There is no known workaround. References https://jira.xwiki.org/browse/XWIKI-20394 https://jira.xwiki.org/browse/XRENDERING-694 For more information If you have any questions or comments about this advisory: • Open an issue in Jira XWiki.org • Email us at Security Mailing List