CVE-2023-27479
org.xwiki.platform:xwiki-platform-panels-ui vulnerable to Eval Injection
Description
### Impact 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 of: ``` order=100 label={{/html}} {{async async="true" cached="false" context="doc.reference"}}{{groovy}}println("Hello " + "from groovy!"){{/groovy}}{{/async}} icon=icon:pencil target=XWiki.username ``` 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. ### Patches The vulnerability has been patched in XWiki 13.10.11, 14.4.7 and 14.10-rc-1 ### Workarounds The issue can be fixed by editing the `PanelsCode.ApplicationsPanelConfigurationSheet` wiki page and making the same modifications as shown in the [patch](https://github.com/xwiki/xwiki-platform/commit/6de5442f3c91c3634a66c7b458d5b142e1c2a2dc) for this issue. ### References * https://github.com/xwiki/xwiki-platform/commit/6de5442f3c91c3634a66c7b458d5b142e1c2a2dc * https://jira.xwiki.org/browse/XWIKI-20294 ### For more information If you have any questions or comments about this advisory: * Open an issue in [Jira XWiki.org](https://jira.xwiki.org/) * Email us at [Security Mailing List](mailto:security@xwiki.org)
How to fix CVE-2023-27479
To remediate CVE-2023-27479, upgrade the affected package to a fixed version below.
- —upgrade to 13.10.11 or later
Is CVE-2023-27479 being exploited?
Moderate — EPSS is 14.9%. Track this CVE but it's not at the top of the prioritisation list.