9.1

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3.1

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CVE-2024-43400

CVE-2024-43400: XWiki Platform allows XSS through XClass name in string properties

Impact

Is it possible for a user without Script or Programming rights to craft a URL pointing to a page with arbitrary JavaScript. This requires social engineer to trick a user to follow the URL.

Reproduction steps

As a user without script or programming right, create a (non-terminal) document named " + alert(1) + " (the quotes need to be part of the name).
Edit the class.
Add a string property named "test".
Edit using the object editor and add an object of the created class
Get an admin to open <xwiki-server>/xwiki/bin/view/%22%20%2B%20alert(1)%20%2B%20%22/?viewer=display&type=object&property=%22%20%2B%20alert(1)%20%2B%20%22.WebHome.test&mode=edit where <xwiki-server> is the URL of your XWiki installation.

Patches

This has been patched in XWiki 14.10.21, 15.5.5, 15.10.6 and 16.0.0.

Workarounds

We're not aware of any workaround except upgrading.

References

https://jira.xwiki.org/browse/XWIKI-21810
https://github.com/xwiki/xwiki-platform/commit/27eca8423fc1ad177518077a733076821268509c

(GitHub Advisory)

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CVE-2024-43400

CVE-2024-43400:

9.1

CVSS Score

3.1

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
org.xwiki.platform:xwiki-platform-oldcore	maven	>= 1.1.2, < 14.10.21	14.10.21
org.xwiki.platform:xwiki-platform-oldcore	maven	>= 15.0-rc-1, < 15.5.5	15.5.5
org.xwiki.platform:xwiki-platform-oldcore	maven	>= 15.6-rc-1, < 15.10.6	15.10.6
org.xwiki.platform:xwiki-platform-oldcore	maven	= 16.0.0-rc-1	16.0.0

Technical Details

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Root Cause Analysis

The vulnerability stems from improper escaping in the suggest URL generation within StringClass. The original implementation in displayEdit() directly concatenated user-controlled class names into JavaScript code without proper escaping (CWE-79). The attack uses a malicious class name containing JavaScript payload, which gets embedded in the 'onfocus' handler. The commit patching this (27eca84) introduces URL parameter escaping via EscapeTool and JavaScript escaping via StringEscapeUtils, confirming the vulnerability was in the pre-patch displayEdit handling of these values.

Vulnerable functions

Only Mi**o us*rs **n s** t*is s**tion

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WAF Protection Rules

WAF Rule

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Reasoning

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9.1

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Basic Information

Basic Information

Concerned about an active attack path?

CVE-2024-43400: XWiki Platform allows XSS through XClass name in string properties

Impact

Reproduction steps

Patches

Workarounds

References

CVE-2024-43400:

9.1

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Technical Details

Technical Details

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Root Cause Analysis

Vulnerable functions

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Reasoning

Technical Details

Basic Information

Basic Information

CVE-2024-43400: XWiki Platform allows XSS through XClass name in string properties

Impact

Reproduction steps

Patches

Workarounds

References

9.1

9.1

Vulnerability IntelligenceMiggo AI

Root Cause Analysis

Vulnerable functions

Vulnerability Intelligence
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