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XWiki Platform CSRF remote code execution through scheduler job's document reference

Critical severity GitHub Reviewed Published Apr 10, 2024 in xwiki/xwiki-platform • Updated Apr 10, 2024

Package

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

Affected versions

>= 3.1, < 14.10.19
>= 15.0-rc-1, < 15.5.4
>= 15.6-rc-1, < 15.9

Patched versions

14.10.19
15.5.4
15.9

Description

Impact

By creating a document with a special crafted documented reference and an XWiki.SchedulerJobClass XObject, it is possible to execute arbitrary code on the server whenever an admin visits the scheduler page or the scheduler page is referenced, e.g., via an image in a comment on a page in the wiki.

To reproduce on an XWiki installation, click on this link to create a new document : <xwiki-host>/xwiki/bin/view/%22%3E%5D%5D%7B%7B%2Fhtml%7D%7D%7B%7Basync%20context%3D%22request/parameters%22%7D%7D%7B%7Bvelocity%7D%7D%23evaluate%28%24request/eval%29/.
Then, add to this document an object of type XWiki.SchedulerJobClass.
Finally, as an admin, go to <xwiki-host>/xwiki/bin/view/Scheduler/?eval=$services.logging.getLogger(%22attacker%22).error(%22Hello%20from%20URL%20Parameter!%20I%20got%20programming:%20$services.security.authorization.hasAccess(%27programming%27)%22).
If the logs contain ERROR attacker - Hello from URL Parameter! I got programming: true, the installation is vulnerable.

Patches

The vulnerability has been fixed on XWiki 14.10.19, 15.5.5, and 15.9.

Workarounds

Modify the Scheduler.WebHome page following this patch.

References

References

@surli surli published to xwiki/xwiki-platform Apr 10, 2024
Published to the GitHub Advisory Database Apr 10, 2024
Reviewed Apr 10, 2024
Published by the National Vulnerability Database Apr 10, 2024
Last updated Apr 10, 2024

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

EPSS score

0.045%
(17th percentile)

Weaknesses

CVE ID

CVE-2024-31986

GHSA ID

GHSA-37m4-hqxv-w26g

Source code

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