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Security Advisories: GSA_kwCzR0hTQS1tanc5LTNmOWYtanEyd84AAy55

XWiki Platform vulnerable to code injection from view right on XWiki.ClassSheet

Impact

Any user with view rights can execute arbitrary script macros including Groovy and Python macros that allow remote code execution including unrestricted read and write access to all wiki contents. The attack works by opening a non-existing page with a name crafted to contain a dangerous payload.

For instance: Open <xwiki-host>/xwiki/bin/view/%22%2F%7D%7D%7B%7B%2Fhtml%7D%7D%20%7B%7Basync%20async%3D%22true%22%20cached%3D%22false%22%20context%3D%22doc.reference%22%7D%7D%7B%7Bgroovy%7D%7Dprintln(%22Hello%20%22%20%2B%20%22from%20groovy!%22)%7B%7B%2Fgroovy%7D%7D%7B%7B%2Fasync%7D%7D?sheet=XWiki.ClassSheet&xpage=view, where <xwiki-host> is the URL of your XWiki installation.

Patches

This has been patched in XWiki 14.4.8, 14.10.3 and 15.0RC1.

Workarounds

The fix is only impacting Velocity templates and page contents, so applying this patch is enough to fix the issue.

References

For more information

If you have any questions or comments about this advisory:

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Permalink: https://github.com/advisories/GHSA-mjw9-3f9f-jq2w
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1tanc5LTNmOWYtanEyd84AAy55
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: about 1 year ago
Updated: 6 months ago

CVSS Score: 8.8
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Identifiers: GHSA-mjw9-3f9f-jq2w, CVE-2023-29522
References:

Repository: https://github.com/xwiki/xwiki-platform
Blast Radius: 1.0

Affected Packages

maven:org.xwiki.platform:xwiki-platform-xclass-ui

Affected Version Ranges: >= 14.5, < 14.10.3, >= 7.0-rc-1, < 14.4.8
Fixed in: 14.10.3, 14.4.8