CVE-2023-27479: Improper Neutralization of Directives in Dynamically Evaluated Code in org.xwiki.platform:xwiki-platform-panels-ui
First published: Tue Mar 07 2023(Updated: )
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. In affected versions any user with view rights can execute arbitrary Groovy, Python or Velocity code in XWiki leading to full access to the XWiki installation. The root cause is improper escaping of UIX parameters. A proof of concept exploit is to log in, add an `XWiki.UIExtensionClass` xobject to the user profile page, with an Extension Parameters content containing `label={{/html}} {{async async="true" cached="false" context="doc.reference"}}{{groovy}}println("Hello " + "from groovy!"){{/groovy}}{{/async}}`. Then, navigating to `PanelsCode.ApplicationsPanelConfigurationSheet` (i.e., `<xwiki-host>/xwiki/bin/view/PanelsCode/ApplicationsPanelConfigurationSheet` where `<xwiki-host>` is the URL of your XWiki installation) should not execute the Groovy script. If it does, you will see `Hello from groovy!` displayed on the screen. This vulnerability has been patched in XWiki 13.10.11, 14.4.7 and 14.10-rc-1. Users are advised to upgrade. For users unable to upgrade the issue can be fixed by editing the `PanelsCode.ApplicationsPanelConfigurationSheet` wiki page and making the same modifications as shown in commit `6de5442f3c`.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Xwiki Xwiki | >6.3<13.10.11 | |
| Xwiki Xwiki | >=14.0<14.4.7 | |
| Xwiki Xwiki | >=14.5<14.10 | |
| Xwiki Xwiki | =6.3 | |
| Xwiki Xwiki | =6.3-milestone1 | |
| Xwiki Xwiki | =6.3-milestone2 |
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Reference Links
Frequently Asked Questions
What is CVE-2023-27479?
CVE-2023-27479 is a vulnerability in XWiki Platform that allows any user with view rights to execute arbitrary Groovy, Python, or Velocity code, leading to full access to the XWiki installation.
How does CVE-2023-27479 affect XWiki?
CVE-2023-27479 affects XWiki versions 6.3 through 14.10, allowing unauthorized execution of code by users with view rights.
What is the severity of CVE-2023-27479?
CVE-2023-27479 has a severity rating of critical.
How can I fix CVE-2023-27479?
To fix CVE-2023-27479, upgrade XWiki to a version that is not affected by the vulnerability.
Where can I find more information about CVE-2023-27479?
You can find more information about CVE-2023-27479 on the XWiki GitHub repository and the XWiki JIRA page.
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- vendor/xwiki
- canonical/xwiki xwiki
- version/xwiki xwiki/14.0
- version/xwiki xwiki/14.5
- version/xwiki xwiki/6.3
- version/xwiki xwiki/6.3-milestone1
- version/xwiki xwiki/6.3-milestone2