CVE-2022-24897 PoC — Arbitrary filesystem write access from Velocity

Source

https://github.com/shoucheng3/xwiki__xwiki-commons_CVE-2022-24897_12-6-6

Associated Vulnerability

Title: Arbitrary filesystem write access from Velocity (CVE-2022-24897)
Description:APIs to evaluate content with Velocity is a package for APIs to evaluate content with Velocity. Starting with version 2.3 and prior to 12.6.7, 12.10.3, and 13.0, the velocity scripts are not properly sandboxed against using the Java File API to perform read or write operations on the filesystem. Writing an attacking script in Velocity requires the Script rights in XWiki so not all users can use it, and it also requires finding an XWiki API which returns a File. The problem has been patched in versions 12.6.7, 12.10.3, and 13.0. There is no easy workaround for fixing this vulnerability other than upgrading and being careful when giving Script rights.

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

## 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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