Description

XWiki Change Request is an XWiki application allowing to request changes on a wiki without publishing directly the changes. Change request allows to edit any page by default, and the changes are then exported in an XML file that anyone can download. So it's possible for an attacker to obtain password hash of users by performing an edit on the user profiles and then downloading the XML file that has been created. This is also true for any document that might contain password field and that a user can view.
This vulnerability impacts all version of Change Request, but the impact depends on the rights that has been set on the wiki since it requires for the user to have the Change request right (allowed by default) and view rights on the page to target. This issue cannot be easily exploited in an automated way. The patch consists in denying to users the right of editing pages that contains a password field with change request. It means that already existing change request for those pages won't be removed by the patch, administrators needs to take care of it. The patch is provided in Change Request 1.10, administrators should upgrade immediately. It's possible to workaround the vulnerability by denying manually the Change request right on some spaces, such as XWiki space which will include any user profile by default.

Classification

CVE ID: CVE-2023-49280

CVSS Base Severity: HIGH

CVSS Base Score: 7.7

Affected Products

Vendor: xwiki-contrib

Product: application-changerequest

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.12% (probability of being exploited)

EPSS Percentile: 47.47% (scored less or equal to compared to others)

EPSS Date: 2025-02-03 (when was this score calculated)

References

https://github.com/xwiki-contrib/application-changerequest/security/advisories/GHSA-2fr7-cc7p-p45q
https://github.com/xwiki-contrib/application-changerequest/commit/ff0f5368ea04f0e4aa7b33821c707dc68a8c5ca8
https://jira.xwiki.org/browse/CRAPP-302

Timeline