CVE-2021-39223

File path disclosure of shared files in Richdocuments application

Severity Score

5.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Nextcloud is an open-source, self-hosted productivity platform. The Nextcloud Richdocuments application prior to versions 3.8.6 and 4.2.3 returned verbatim exception messages to the user. This could result in a full path disclosure on shared files. (e.g. an attacker could see that the file `shared.txt` is located within `/files/$username/Myfolder/Mysubfolder/shared.txt`). It is recommended that the Richdocuments application is upgraded to 3.8.6 or 4.2.3. As a workaround, disable the Richdocuments application in the app settings.

Nextcloud es una plataforma de productividad de código abierto y auto-alojada. La aplicación Nextcloud Richdocuments versiones anteriores a 3.8.6 y 4.2.3, devolvía mensajes de excepción literales al usuario. Esto podría resultar en una revelación de la ruta completa en los archivos compartidos. (por ejemplo, un atacante podría ver que el archivo "shared.txt" se encuentra dentro de "files/$username/Myfolder/Mysubfolder/shared.txt"). Es recomendado actualizar la aplicación Richdocuments a la versión 3.8.6 o 4.2.3. Como solución, deshabilite la aplicación Richdocuments en la configuración de la aplicación

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-08-16 CVE Reserved
2021-10-25 CVE Published
2024-07-10 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

CAPEC

References (2)

URL	Tag	Source
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-rjcc-4cgj-6v93	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://github.com/nextcloud/richdocuments/pull/1760	2021-10-29

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Nextcloud Search vendor "Nextcloud"		Richdocuments Search vendor "Nextcloud" for product "Richdocuments"				< 3.8.6 Search vendor "Nextcloud" for product "Richdocuments" and version " < 3.8.6"		-		Affected
Nextcloud Search vendor "Nextcloud"		Richdocuments Search vendor "Nextcloud" for product "Richdocuments"				>= 4.0.0 < 4.2.3 Search vendor "Nextcloud" for product "Richdocuments" and version " >= 4.0.0 < 4.2.3"		-		Affected