CVE-2023-29525: Privilege escalation from view right on XWiki.Notifications.Code.LegacyNotificationAdministration in xwiki-platform
Impact
Steps to reproduce:
Open <xwiki-host>/xwiki/bin/view/XWiki/Notifications/Code/LegacyNotificationAdministration?since=%7B%7B%2Fhtml%7D%7D+%7B%7Basync+async%3D%22true%22+cached%3D%22false%22+context%3D%22doc.reference%22%7D%7D%7B%7Bgroovy%7D%7Dprintln%28%22Hello+%22+%2B+%22from+groovy%21%22%29%7B%7B%2Fgroovy%7D%7D%7B%7B%2Fasync%7D%7D, where <xwiki-host> is the URL of your XWiki installation.
This demonstrates an XWiki syntax injection attack via the since-parameter, allowing privilege escalation from view to programming rights.
Patches
The vulnerability has been patched in XWiki 15.0-rc-1, 14.10.3, 14.4.8 and 14.10.3.
Workarounds
For versions >= 14.6-rc-1 the workaround is to modify the page XWiki.Notifications.Code.LegacyNotificationAdministration to add the missing escaping, as described on https://github.com/xwiki/xwiki-platform/commit/8e7c7f90f2ddaf067cb5b83b181af41513028754#diff-4e13f4ee4a42938bf1201b7ee71ca32edeacba22559daf0bcb89d534e0225949R70
For versions < 14.6-rc-1 the workaround is to modify the file <xwikiwebapp>/templates/distribution/eventmigration.wiki to add the missing escaping, as described on https://github.com/xwiki/xwiki-platform/commit/6d74e2e4aa03d19f0be385ab63ae9e0f0e90a766
References
https://jira.xwiki.org/browse/XWIKI-20287
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
Other sources
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Affected versions of xwiki are subject to code injection in the since parameter of the /xwiki/bin/view/XWiki/Notifications/Code/LegacyNotificationAdministration endpoint. This provides an XWiki syntax injection attack via the since-parameter, allowing privilege escalation from view to programming rights and subsequent code execution privilege. The vulnerability has been patched in XWiki 15.0-rc-1, 14.10.3, 14.4.8 and 14.10.3. Users are advised to upgrade. Users unable to upgrade may modify the page XWiki.Notifications.Code.LegacyNotificationAdministration to add the missing escaping. For versions < 14.6-rc-1 a workaround is to modify the file <xwikiwebapp>/templates/distribution/eventmigration.wiki to add the missing escaping.
Affected Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2023-29525.
What is the severity of CVE-2023-29525?
The severity of CVE-2023-29525 is critical, with a severity value of 8.8.
What software versions are affected by CVE-2023-29525?
Versions up to and excluding 14.4.8 of XWiki and versions between 14.5 and 14.10.3 of XWiki are affected by CVE-2023-29525.
How does CVE-2023-29525 impact XWiki?
CVE-2023-29525 allows code injection in the 'since' parameter of the '/xwiki/bin/view/XWiki/Notifications/Code/LegacyNotificationAdministration' endpoint in XWiki.
How can I fix CVE-2023-29525?
To fix CVE-2023-29525, update XWiki to a version that is not affected by the vulnerability.