Impact
It's possible for any user knowing the ID of a notification filter preference of another user, to enable/disable it or even delete it. The impact is that the target user might start loosing notifications on some pages because of this. This vulnerability is present in XWiki since 13.2-rc-1.
Patches
The vulnerability has been patched in XWiki 14.10.21, 15.5.5, 15.10.1, 16.0-rc-1. The patch consists in checking properly the rights of the user before performing any action on the filters.
Workarounds
It's possible to fix manually the vulnerability by editing the document XWiki.Notifications.Code.NotificationPreferenceService to apply the changes performed in this commit e8acc9d8e6af7dfbfe70716ded431642ae4a6dd4.
References
JIRA ticket: https://jira.xwiki.org/browse/XWIKI-20337 Commit: e8acc9d8e6af7dfbfe70716ded431642ae4a6dd4
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 @floerer
Impact When using default XWiki configuration, it's possible for an attacker to upload an SVG containing a script executed when executing the download action on the file.
Patches This problem has been patched so that the default configuration doesn't allow to display the SVG files in the browser.
Workarounds This issue can be fixed without the patch by setting properly the configuration to download or display files, see: https://www.xwiki.org/xwiki/bin/view/Documentation/AdminGuide/Attachments#HAttachmentdisplayordownload
References https://jira.xwiki.org/browse/XWIKI-18368
For more information If you have any questions or comments about this advisory: Open an issue in Jira Email us at security ML
Impact
It's possible to get access to notification filters of any user by using a URL such as <hostname>xwiki/bin/get/XWiki/Notifications/Code/NotificationFilterPreferenceLivetableResults?outputSyntax=plain&type=custom&user=<username>. 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.