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Privilege escalation (PR)/RCE from account through class sheet

Critical severity GitHub Reviewed Published May 9, 2023 in xwiki/xwiki-platform • Updated Nov 12, 2023

Package

maven org.xwiki.platform:xwiki-platform-test-ui (Maven)

Affected versions

>= 3.3-milestone-3, < 14.10.4

Patched versions

14.10.4

Description

Impact

It's possible for a user to execute anything with the right of the author of the XWiki.ClassSheet document.

Steps to Reproduce:

  1. Edit your user profile with the object editor and add an object of type DocumentSheetBinding with value Default Class Sheet
  2. Edit your user profile with the wiki editor and add the syntax {{async}}{{groovy}}println("Hello " + "from groovy!"){{/groovy}}{{/async}}
  3. Click "Save & View"

Expected result:

An error is displayed as the user doesn't have the right to execute the Groovy macro.

Actual result:

The text "Hello from groovy!" is displayed at the top of the document.

Patches

This has been patched in XWiki 15.0-rc-1 and 14.10.4.

Workarounds

There are no known workarounds for it.

References

https://jira.xwiki.org/browse/XWIKI-20566
xwiki/xwiki-platform@de72760

For more information

If you have any questions or comments about this advisory:

References

@tmortagne tmortagne published to xwiki/xwiki-platform May 9, 2023
Published by the National Vulnerability Database May 9, 2023
Published to the GitHub Advisory Database May 11, 2023
Reviewed May 11, 2023
Last updated Nov 12, 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

0.213%
(59th percentile)

Weaknesses

CVE ID

CVE-2023-32069

GHSA ID

GHSA-36fm-j33w-c25f

Source code

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