CVE-2024-22402

Improper handling of request URLs in Nextcloud Guests app allows guest users to bypass app allowlist

Severity Score

5.4

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Nextcloud guests app is a utility to create guest users which can only see files shared with them. In affected versions users were able to load the first page of apps they were actually not allowed to access. Depending on the selection of apps installed this may present a permissions bypass. It is recommended that the Guests app is upgraded to 2.4.1, 2.5.1 or 3.0.1. There are no known workarounds for this vulnerability.

La aplicación para invitados Nextcloud es una utilidad para crear usuarios invitados que solo pueden ver los archivos compartidos con ellos. En las versiones afectadas, los usuarios podían cargar la primera página de aplicaciones a las que en realidad no se les permitía acceder. Sin embargo, todas las llamadas API posteriores fallaron correctamente, por lo que en la mayoría de las aplicaciones no se filtró información adicional. Dependiendo de la selección de aplicaciones instaladas, esto puede presentar una omisión de permisos. Se recomienda actualizar la aplicación Invitados a 2.4.1, 2.5.1 o 3.0.1. No se conocen workarounds para esta vulnerabilidad.

*Credits: N/A

CVSS Scores

NISTv3.1 5.4

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2024-01-10 CVE Reserved
2024-01-18 CVE Published
2024-01-27 EPSS Updated
2024-08-01 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-281: Improper Preservation of Permissions

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://github.com/nextcloud/guests/pull/1082	2024-01-26

URL	Date	SRC
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-v3qw-7vgv-2fxj	2024-01-26

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Nextcloud Search vendor "Nextcloud"		Guests Search vendor "Nextcloud" for product "Guests"				< 2.4.1 Search vendor "Nextcloud" for product "Guests" and version " < 2.4.1"		-		Affected
Nextcloud Search vendor "Nextcloud"		Guests Search vendor "Nextcloud" for product "Guests"				2.5.0 Search vendor "Nextcloud" for product "Guests" and version "2.5.0"		-		Affected
Nextcloud Search vendor "Nextcloud"		Guests Search vendor "Nextcloud" for product "Guests"				3.0.0 Search vendor "Nextcloud" for product "Guests" and version "3.0.0"		-		Affected