CVE-2023-29528 PoC — Cross-site Scripting in org.xwiki.commons:xwiki-commons-xml

Source

https://github.com/shoucheng3/xwiki__xwiki-commons_CVE-2023-29528_14-9-rc-1

Associated Vulnerability

Title: Cross-site Scripting in org.xwiki.commons:xwiki-commons-xml (CVE-2023-29528)
Description:XWiki Commons are technical libraries common to several other top level XWiki projects. The "restricted" mode of the HTML cleaner in XWiki, introduced in version 4.2-milestone-1 and massively improved in version 14.6-rc-1, allowed the injection of arbitrary HTML code and thus cross-site scripting via invalid HTML comments. As a consequence, any code relying on this "restricted" mode for security is vulnerable to JavaScript injection ("cross-site scripting"/XSS). When a privileged user with programming rights visits such a comment in XWiki, the malicious JavaScript code is executed in the context of the user session. This allows server-side code execution with programming rights, impacting the confidentiality, integrity and availability of the XWiki instance. This problem has been patched in XWiki 14.10, HTML comments are now removed in restricted mode and a check has been introduced that ensures that comments don't start with `>`. There are no known workarounds apart from upgrading to a version including the fix.

Readme

# XWiki Commons

[XWiki Commons](http://commons.xwiki.org/xwiki/bin/view/Main/) are technical libraries common to several other top level XWiki projects. 

These libraries can be used by projects outside of the XWiki ecosystem, are generic and not related to the wiki domain.

XWiki Platform, XWiki Commons and XWiki Rendering are part of the [XWiki.org](http://www.xwiki.org/) software forge. They are released together and share the same version.

## Documentation
* [Documentation](http://commons.xwiki.org/)
* [API](http://platform.xwiki.org/xwiki/bin/view/DevGuide/API)
* [Development Zone](http://dev.xwiki.org/xwiki/bin/view/Community/)

## Download
The XWiki Commons JARs are available in the [![Maven Central Repository](https://img.shields.io/maven-central/v/org.xwiki.commons/xwiki-commons.svg?maxAge=3600)](http://search.maven.org/#search|ga|1|g%3A%22org.xwiki.commons%22).

## Release Notes
Read our [Release Notes](http://www.xwiki.org/xwiki/bin/view/ReleaseNotes/).

## Tools
* [Continuous Integration](http://ci.xwiki.org/) setup launches a build for each commit
* [Issue Tracker](http://jira.xwiki.org/browse/XCOMMONS) if you want to report an issue
* [Development Flow](http://dev.xwiki.org/xwiki/bin/view/Community/DevelopmentPractices#HGeneralDevelopmentFlow) to see the full list of tools we use to build XWiki
* [![Revved up by Gradle Enterprise](https://img.shields.io/badge/Revved%20up%20by-Gradle%20Enterprise-06A0CE?logo=Gradle&labelColor=02303A)](https://ge.xwiki.org/scans)

## Community
We're always looking for contributors! 
You should read our [Get Involved Guide](http://dev.xwiki.org/xwiki/bin/view/Community/Contributing) or get in touch:
* [Blog](http://www.xwiki.org/xwiki/bin/view/Blog/)
* [Forum](https://dev.xwiki.org/xwiki/bin/view/Community/Discuss)
* [Chat](https://dev.xwiki.org/xwiki/bin/view/Community/Chat)

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