GHSA-vxwr-wpjv-qjq7

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Source
https://github.com/advisories/GHSA-vxwr-wpjv-qjq7
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/04/GHSA-vxwr-wpjv-qjq7/GHSA-vxwr-wpjv-qjq7.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-vxwr-wpjv-qjq7
Aliases
Published
2024-04-10T17:11:45Z
Modified
2024-04-10T22:00:51Z
Severity
  • 9.9 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
Summary
XWiki Platform: Privilege escalation (PR) from user registration through PDFClass
Details

Impact

Remote code execution is possible via PDF export templates. To reproduce on an installation, register a new user account with username PDFClass if XWiki.PDFClass does not exist. On XWiki.PDFClass, use the class editor to add a "style" property of type "TextArea" and content type "Plain Text". Then, add an object of class PDFClass and set the "style" attribute to $services.logging.getLogger('PDFClass').error("I got programming: $services.security.authorization.hasAccess('programming')"). Finally, go to <host>/xwiki/bin/export/Main/WebHome?format=pdf&pdftemplate=XWiki.PDFClass. If the logs contain "ERROR PDFClass - I got programming: true", the instance is vulnerable.

Patches

This vulnerability has been patched in XWiki 14.10.20, 15.5.4 and 15.10-rc-1.

Workarounds

If PDF templates are not typically used on the instance, an administrator can create the document XWiki.PDFClass and block its edition, after making sure that it does not contain a style attribute. Otherwise, the instance needs to be updated.

References

  • https://jira.xwiki.org/browse/XWIKI-21337
  • https://github.com/xwiki/xwiki-platform/commit/d28e21a670c69880b951e415dd2ddd69d273eae9
References

Affected packages

Maven / org.xwiki.platform:xwiki-platform-oldcore

Package

Name
org.xwiki.platform:xwiki-platform-oldcore
View open source insights on deps.dev
Purl
pkg:maven/org.xwiki.platform/xwiki-platform-oldcore

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.0.1
Fixed
14.10.20

Maven / org.xwiki.platform:xwiki-platform-oldcore

Package

Name
org.xwiki.platform:xwiki-platform-oldcore
View open source insights on deps.dev
Purl
pkg:maven/org.xwiki.platform/xwiki-platform-oldcore

Affected ranges

Type
ECOSYSTEM
Events
Introduced
15.0-rc-1
Fixed
15.5.4

Maven / org.xwiki.platform:xwiki-platform-oldcore

Package

Name
org.xwiki.platform:xwiki-platform-oldcore
View open source insights on deps.dev
Purl
pkg:maven/org.xwiki.platform/xwiki-platform-oldcore

Affected ranges

Type
ECOSYSTEM
Events
Introduced
15.6-rc-1
Fixed
15.10-rc-1