XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Any user with view rights on commonly accessible documents including the menu macro can execute arbitrary Groovy, Python or Velocity code in XWiki leading to full access to the XWiki installation due to improper escaping of the macro content and parameters of the menu macro. The problem has been patched in XWiki 14.6RC1, 13.10.8 and 14.4.3. The patch (commit `2fc20891`) for the document `Menu.MenuMacro` can be manually applied or a XAR archive of a patched version can be imported. The menu macro was basically unchanged since XWiki 11.6 so on XWiki 11.6 or later the patch for version of 13.10.8 (commit `59ccca24a`) can most likely be applied, on XWiki version 14.0 and later the versions in XWiki 14.6 and 14.4.3 should be appropriate.
The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved.
| Link | Tags |
|---|---|
| https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-6w8h-26xx-cf8q | patch third party advisory exploit |
| https://github.com/xwiki/xwiki-platform/commit/2fc20891e6c6b0ca05ee07e315e7f435e8919f8d | third party advisory patch |
| https://github.com/xwiki/xwiki-platform/commit/59ccca24a8465a19f40c51d65fcc2c09c1edea16 | third party advisory patch |
| https://jira.xwiki.org/browse/XWIKI-19857 | patch exploit vendor advisory issue tracking |
| https://www.xwiki.org/xwiki/bin/view/Documentation/UserGuide/Features/Imports#HImportingXWikipages | vendor advisory |