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XWiki Platform vulnerable to privilege escalation from view right on XWiki.Notifications.Code.LegacyNotificationAdministration

Critical severity GitHub Reviewed Published Apr 18, 2023 in xwiki/xwiki-platform • Updated Nov 4, 2023

Package

maven org.xwiki.platform:xwiki-platform-distribution-war (Maven)

Affected versions

>= 12.6.1, < 13.10.11
>= 14.0-rc-1, < 14.4.8
>= 14.5, < 14.6-rc-1

Patched versions

13.10.11
14.4.8
14.6-rc-1
maven org.xwiki.platform:xwiki-platform-legacy-events-hibernate-ui (Maven)
>= 14.6-rc-1, < 14.10.3
14.10.3

Description

Impact

Steps to reproduce:

Open /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 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 xwiki/xwiki-platform@8e7c7f9#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 xwiki/xwiki-platform@6d74e2e

References

https://jira.xwiki.org/browse/XWIKI-20287

For more information

If you have any questions or comments about this advisory:

References

@tmortagne tmortagne published to xwiki/xwiki-platform Apr 18, 2023
Published by the National Vulnerability Database Apr 19, 2023
Published to the GitHub Advisory Database Apr 20, 2023
Reviewed Apr 20, 2023
Last updated Nov 4, 2023

Severity

Critical

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS score

0.291%
(70th percentile)

Weaknesses

CVE ID

CVE-2023-29525

GHSA ID

GHSA-jgg7-w2rj-58cj

Source code

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