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XWiki Platform privilege escalation from script right to programming right through title displayer

Critical severity GitHub Reviewed Published Nov 7, 2023 in xwiki/xwiki-platform • Updated Nov 7, 2023

Package

maven org.xwiki.platform:xwiki-platform-display-api (Maven)

Affected versions

>= 3.2-milestone-3, < 14.10.7
>= 15.0, < 15.2-rc-1

Patched versions

14.10.7
15.2-rc-1

Description

Impact

In XWiki Platform, it's possible for a user to write a script in which any velocity content is executed with the right of any other document content author.

To reproduce:

As a user with script but not programming right, create a document with the following content:

{{velocity}}
#set($main = $xwiki.getDocument('AppWithinMinutes.DynamicMessageTool'))
$main.setTitle('$doc.getDocument().getContentAuthor()')
$main.getPlainTitle()
{{/velocity}}

Since this API require programming right and the user does not have it, the expected result is $doc.document.authors.contentAuthor (not executed script), unfortunately with the security vulnerability we get XWiki.superadmin which shows that the title was executed with the right of the unmodified document.

Patches

This has been patched in XWiki 14.10.7 and 15.2-RC-1.

Workarounds

There are no known workarounds for it.

References

For more information

If you have any questions or comments about this advisory:

References

@tmortagne tmortagne published to xwiki/xwiki-platform Nov 7, 2023
Published by the National Vulnerability Database Nov 7, 2023
Published to the GitHub Advisory Database Nov 7, 2023
Reviewed Nov 7, 2023
Last updated Nov 7, 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
High
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:H/UI:N/S:C/C:H/I:H/A:H

EPSS score

0.076%
(33rd percentile)

Weaknesses

CVE ID

CVE-2023-46244

GHSA ID

GHSA-rmxw-c48h-2vf5

Source code

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