CVE-2023-37909

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Starting in version 5.1-rc-1 and prior to versions 14.10.8 and 15.3-rc-1, any user who can edit their own user profile can execute arbitrary script macros including Groovy and Python macros that allow remote code execution including unrestricted read and write access to all wiki contents. This has been patched in XWiki 14.10.8 and 15.3-rc-1 by adding proper escaping. As a workaround, the patch can be manually applied to the document `Menu.UIExtensionSheet`; only three lines need to be changed.

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Starting in version 5.1-rc-1 and prior to versions 14.10.8 and 15.3-rc-1, any user who can edit their own user profile can execute arbitrary script macros including Groovy and Python macros that allow remote code execution including unrestricted read and write access to all wiki contents. This has been patched in XWiki 14.10.8 and 15.3-rc-1 by adding proper escaping. As a workaround, the patch can be manually applied to the document `Menu.UIExtensionSheet`; only three lines need to be changed.

### Impact Any user who can edit their own user profile can execute arbitrary script macros including Groovy and Python macros that allow remote code execution including unrestricted read and write access to all wiki contents. This can be reproduced with the following steps: 1. As an advanced user, use the object editor to add an object of type `UIExtensionClass` to your user profile. Set the value "Extension Point ID" to `{{/html}}{{async async=false cache=false}}{{groovy}}println("Hello from Groovy!"){{/groovy}}{{/async}}` 2. Open `<xwiki-host>/xwiki/bin/edit/XWiki/<username>?sheet=Menu.UIExtensionSheet` where `<xwiki-host>` is the URL of your XWiki installation and `<username>` is your user name. If the text `Hello from Groovy!" selected="selected">` is displayed in the output, the attack succeeded. ### Patches This has been patched in XWiki 14.10.8 and 15.3 RC1 by adding proper escaping. ### Workarounds The [patch](https://github.com/xwiki/xwiki-platform/commit/9e8f080094333dec63a8583229a3799208d773be#diff-47a5652d0c8e4601dac12bd9ab34b8bd688cb22a1b758ce7b774043658834662) can be manually applied to the document `Menu.UIExtensionSheet`, only three lines need to be changed. ### References * https://jira.xwiki.org/browse/XWIKI-20746 * https://github.com/xwiki/xwiki-platform/commit/9e8f080094333dec63a8583229a3799208d773be

### Impact Any user who can edit their own user profile can execute arbitrary script macros including Groovy and Python macros that allow remote code execution including unrestricted read and write access to all wiki contents. This can be reproduced with the following steps: 1. As an advanced user, use the object editor to add an object of type `UIExtensionClass` to your user profile. Set the value "Extension Point ID" to `{{/html}}{{async async=false cache=false}}{{groovy}}println("Hello from Groovy!"){{/groovy}}{{/async}}` 2. Open `<xwiki-host>/xwiki/bin/edit/XWiki/<username>?sheet=Menu.UIExtensionSheet` where `<xwiki-host>` is the URL of your XWiki installation and `<username>` is your user name. If the text `Hello from Groovy!" selected="selected">` is displayed in the output, the attack succeeded. ### Patches This has been patched in XWiki 14.10.8 and 15.3 RC1 by adding proper escaping. ### Workarounds The [patch](https://github.com/xwiki/xwiki-platform/commit/9e8f080094333dec63a8583229a3799208d773be#diff-47a5652d0c8e4601dac12bd9ab34b8bd688cb22a1b758ce7b774043658834662) can be manually applied to the document `Menu.UIExtensionSheet`, only three lines need to be changed. ### References * https://jira.xwiki.org/browse/XWIKI-20746 * https://github.com/xwiki/xwiki-platform/commit/9e8f080094333dec63a8583229a3799208d773be

XWiki Platform es una plataforma wiki genérica que ofrece servicios de ejecución para aplicaciones creadas sobre ella. A partir de la versión 5.1-rc-1 y antes de las versiones 14.10.8 y 15.3-rc-1, cualquier usuario que pueda editar su propio perfil de usuario puede ejecutar macros de script arbitrarias, incluidas macros Groovy y Python, que permiten la ejecución remota de código, incluida la lectura y visualización sin restricciones. acceso de escritura a todos los contenidos de la wiki. Esto se ha parcheado en XWiki 14.10.8 y 15.3-rc-1 agregando un escape adecuado. Como workaround, el parche se puede aplicar manualmente al documento `Menu.UIExtensionSheet`; sólo es necesario cambiar tres líneas.