10

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2024-55662

CVE-2024-55662: XWiki allows remote code execution through the extension sheet

Impact

On instances where Extension Repository Application is installed, any user can execute any code requiring programming rights on the server. In order to reproduce on an instance, as a normal user without script nor programming rights, go to your profile and add an object of type ExtensionCode.ExtensionClass. Set the description to {{async}}{{groovy}}println("Hello from Description"){{/groovy}}{{/async}} and press Save and View. If the description displays as Hello from Description without any error, then the instance is vulnerable.

Patches

This vulnerability has been fixed in XWiki 15.10.9 and 16.3.0.

Workarounds

Since Extension Repository Application is not mandatory, it can be safely disabled on instances that do not use it. It is also possible to manually apply this patch to the page ExtensionCode.ExtensionSheet, as well as this patch to the page ExtensionCode.ExtensionAuthorsDisplayer.

References

https://jira.xwiki.org/browse/XWIKI-21890
https://github.com/xwiki/xwiki-platform/commit/8659f17d500522bf33595e402391592a35a162e8

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

(GitHub Advisory)

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CVE-2024-55662

CVE-2024-55662:

10

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
org.xwiki.platform:xwiki-platform-repository-server-ui	maven	>= 3.3-milestone-1, < 15.10.9	15.10.9
org.xwiki.platform:xwiki-platform-repository-server-ui	maven	>= 16.0.0-rc-1, < 16.3.0	16.3.0

Technical Details

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Root Cause Analysis

The vulnerability stems from improper output escaping in XWiki's Velocity templates. The commit diff shows critical additions of $services.rendering.escape() calls to user-controlled fields like description, summary, and authors list. These fields were previously rendered without sanitization, enabling Groovy macro execution through the async context. The test case in ExtensionSheetPageTest.java verifies escaping prevents code execution, confirming these were the vulnerable points. The CWE-96 (Static Code Injection) classification aligns with unescaped template outputs executing stored payloads.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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10

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CVE-2024-55662: XWiki allows remote code execution through the extension sheet

Impact

Patches

Workarounds

References

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CVE-2024-55662:

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Technical Details

Technical Details

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Root Cause Analysis

Vulnerable functions

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Reasoning

Basic Information

Basic Information

CVE-2024-55662: XWiki allows remote code execution through the extension sheet

Impact

Patches

Workarounds

References

For more information

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Root Cause Analysis

Vulnerable functions

Technical Details

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10

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