GHSA-pg4m-3gp6-hw4w org.xwiki.platform:xwiki-platform-notifications-ui leaks data of notification filters of users

• Maven org.xwiki.platform:xwiki-platform-notifications-ui: >= 13.2-rc-1, < 14.10.21 → fixed in 14.10.21 • Maven org.xwiki.platform:xwiki-platform-notifications-ui: >= 15.0-rc-1, < 15.5.5 → fixed in 15.5.5 • Maven org.xwiki.platform:xwiki-platform-notifications-ui: >= 15.6-rc-1, < 15.10.1 → fixed in 15.10.1

Impact It's possible to get access to notification filters of any user by using a URL such as `xwiki/bin/get/XWiki/Notifications/Code/NotificationFilterPreferenceLivetableResults?outputSyntax=plain&type=custom&user=`. This vulnerability impacts all versions of XWiki since 13.2-rc-1. The filters do not provide much information (they mainly contain references which are public data in XWiki), though some info could be used in combination with other vulnerabilities. Patches The vulnerability has been patched in XWiki 14.10.21, 15.5.5, 15.10.1, 16.0RC1. The patch consists in checking the rights of the user when sending the data. Workarounds It's possible to workaround the vulnerability by applying manually the patch: it's possible for an administrator to edit directly the document `XWiki.Notifications.Code.NotificationFilterPreferenceLivetableResults` to apply the same changes as in the patch. See c8c6545f9bde6f5aade994aa5b5903a67b5c2582. References • Jira ticket: https://jira.xwiki.org/browse/XWIKI-20336 • Commit: c8c6545f9bde6f5aade994aa5b5903a67b5c2582 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 Attribution This vulnerability has been reported on Intigriti by Mete.