// For flags

CVE-2023-37913

org.xwiki.platform:xwiki-platform-office-importer vulnerable to arbitrary server side file writing from account through office converter

Severity Score

8.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Starting in version 3.5-milestone-1 and prior to versions 14.10.8 and 15.3-rc-1, triggering the office converter with a specially crafted file name allows writing the attachment's content to an attacker-controlled location on the server as long as the Java process has write access to that location. In particular in the combination with attachment moving, a feature introduced in XWiki 14.0, this is easy to reproduce but it also possible to reproduce in versions as old as XWiki 3.5 by uploading the attachment through the REST API which doesn't remove `/` or `\` from the filename. As the mime type of the attachment doesn't matter for the exploitation, this could e.g., be used to replace the `jar`-file of an extension which would allow executing arbitrary Java code and thus impact the confidentiality, integrity and availability of the XWiki installation. This vulnerability has been patched in XWiki 14.10.8 and 15.3RC1. There are no known workarounds apart from disabling the office converter.

XWiki Platform es una plataforma wiki genérica que ofrece servicios de ejecución para aplicaciones creadas sobre ella. A partir de la versión 3.5-milestone-1 y antes de las versiones 14.10.8 y 15.3-rc-1, activar el convertidor de Office con un nombre de archivo especialmente manipulado permite escribir el contenido del archivo adjunto en una ubicación controlada por el atacante en el servidor siempre que el proceso Java tiene acceso de escritura a esa ubicación. En particular, en la combinación con el movimiento de archivos adjuntos, una característica introducida en XWiki 14.0, esto es fácil de reproducir pero también es posible reproducir en versiones tan antiguas como XWiki 3.5 cargando el archivo adjunto a través de la API REST que no elimina `/` o `\` del nombre del archivo. Como el tipo mime del archivo adjunto no importa para la explotación, esto podría usarse, por ejemplo, para reemplazar el archivo `jar` por una extensión que permitiría ejecutar código Java arbitrario y, por lo tanto, afectaría la confidencialidad, integridad y disponibilidad de la instalación de XWiki. Esta vulnerabilidad ha sido parcheada en XWiki 14.10.8 y 15.3RC1. No se conocen workarounds aparte de desactivar el convertidor de Office.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
Poc
Automatable
No
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2023-07-10 CVE Reserved
  • 2023-10-25 CVE Published
  • 2024-09-12 CVE Updated
  • 2024-09-12 First Exploit
  • 2024-09-24 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
  • CWE-23: Relative Path Traversal
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Xwiki
Search vendor "Xwiki"
Xwiki
Search vendor "Xwiki" for product "Xwiki"
>= 3.5 < 14.10.8
Search vendor "Xwiki" for product "Xwiki" and version " >= 3.5 < 14.10.8"
-
Affected
Xwiki
Search vendor "Xwiki"
Xwiki
Search vendor "Xwiki" for product "Xwiki"
>= 15.0 < 15.3
Search vendor "Xwiki" for product "Xwiki" and version " >= 15.0 < 15.3"
-
Affected