Advisory Weakness Curation

XWiki Platform vulnerable to code injection from account/view through VFS Tree macro ### 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 `Macro.VFSTreeMacro`. This page is not installed by default. See https://jira.xwiki.org/browse/XWIKI-20260 for the reproduction steps. ### Patches The vulnerability has been patched in XWiki 15.0-rc-1, 14.10.2, 14.4.8, 13.10.11. ### Workarounds The issue can be fixed by applying this patch https://github.com/xwiki/xwiki-platform/commit/fad02328f5ec7ab7fe5b932ffb5bc5c1ba7a5b12 on `Macro.VFSTreeMacro`. ### References - https://jira.xwiki.org/browse/XWIKI-20260 - https://github.com/xwiki/xwiki-platform/commit/fad02328f5ec7ab7fe5b932ffb5bc5c1ba7a5b12 ### 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)

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. 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 `Macro.VFSTreeMacro`. This page is not installed by default.This vulnerability has been patched in XWiki 15.0-rc-1, 14.10.2, 14.4.8, 13.10.11. Users are advised to upgrade. There are no known workarounds for this vulnerability.