// For flags

CVE-2020-12803

XForms submissions could overwrite local files

Severity Score

6.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

ODF documents can contain forms to be filled out by the user. Similar to HTML forms, the contained form data can be submitted to a URI, for example, to an external web server. To create submittable forms, ODF implements the XForms W3C standard, which allows data to be submitted without the need for macros or other active scripting Prior to version 6.4.4 LibreOffice allowed forms to be submitted to any URI, including file: URIs, enabling form submissions to overwrite local files. User-interaction is required to submit the form, but to avoid the possibility of malicious documents engineered to maximize the possibility of inadvertent user submission this feature has now been limited to http[s] URIs, removing the possibility to overwrite local files. This issue affects: The Document Foundation LibreOffice versions prior to 6.4.4.

Los documentos ODF pueden contener formularios para ser completados por parte del usuario. De manera similar a los formularios HTML, los datos del formulario contenido pueden ser enviados hacia un URI, por ejemplo, hacia un servidor web externo. Para crear formularios enviables, ODF implementa el estándar XForms W3C, que permite el envío de datos sin la necesidad de macros u otro scripting activo. LibreOffice versiones anteriores a 6.4.4 permitió que formularios sean enviados hacia cualquier URI, incluyendo los URI file:, permitiendo envíos de formularios para sobrescribir archivos locales. Una interacción del usuario es requerida para enviar el formulario, pero para evitar la posibilidad de documentos maliciosos diseñados para maximizar la posibilidad de envío involuntario del usuario, esta característica ahora se ha limitado a los URI http[s], eliminando la posibilidad de sobrescribir archivos locales. Este problema afecta: Document Foundation LibreOffice versiones anteriores a 6.4.4

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-05-12 CVE Reserved
  • 2020-06-08 CVE Published
  • 2024-04-12 EPSS Updated
  • 2024-09-16 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
  • CWE-284: Improper Access Control
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Libreoffice
Search vendor "Libreoffice"
 Libreoffice
Search vendor "Libreoffice" for product "Libreoffice"
 < 6.4.4
Search vendor "Libreoffice" for product "Libreoffice" and version " < 6.4.4"
-
Affected
Opensuse
Search vendor "Opensuse"
 Leap
Search vendor "Opensuse" for product "Leap"
 15.1
Search vendor "Opensuse" for product "Leap" and version "15.1"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
 Fedora
Search vendor "Fedoraproject" for product "Fedora"
 31
Search vendor "Fedoraproject" for product "Fedora" and version "31"
-
Affected