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RXSS via editor parameter - importinline template

Critical
tmortagne published GHSA-j9h5-vcgv-2jfm May 9, 2023

Package

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

Affected versions

2.2-milestone-1

Patched versions

15.0-rc-1, 14.4.8, 14.10.4

Description

Impact

It's possible to execute javascript with the right of any user by leading him to a special URL on the wiki targeting a page which contains an attachment.

To reproduce:

  • add an attachment to a page (for example, your user profile)
  • add ?xpage=importinline&editor=%22%3E%3Cimg%20src%20onerror=alert(document.domain)%3E to the page view URL as in https://myhost/xwiki/bin/view/XWiki/MyUser?xpage=importinline&editor=%22%3E%3Cimg%20src%20onerror=alert(document.domain)%3E

Patches

This has been patched in XWiki 15.0-rc-1, 14.10.4 and 14.4.8.

Workarounds

The easiest is to edit file <xwiki app>/templates/importinline.vm and apply the modification described on 28905f7

References

https://jira.xwiki.org/browse/XWIKI-20340
https://app.intigriti.com/company/submissions/e95a7ad5-7029-4627-abf0-3e3e3ea0b4ce/XWIKI-E93DFEYK

Attribution

This vulnerability has been reported on Intigriti by René de Sain @renniepak.

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
Required
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:R/S:C/C:H/I:H/A:H

CVE ID

CVE-2023-32071

Weaknesses