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CVE-2024-22401— All users can reset the allowed apps list for Nextcloud Guest App users

Quick assessment

Affected
nextcloud security-advisories
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Nextcloud是德国Nextcloud公司的一套开源的自托管文件同步和共享的通信应用平台。 Nextcloud guests存在安全漏洞，该漏洞源于所有用户都可以为来宾用户重置应用列表。受影响的产品和版本：Nextcloud guests 2.4.0及更高版本，2.5.0及更高版本，3.0.0及更高版本。

CVSS 4.1 · Medium EPSS 0.46% · P38

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2024-22401

Vulnerability Information
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Vulnerability Title
All users can reset the allowed apps list for Nextcloud Guest App users
Source: CVE Program / CVE List V5
Vulnerability Description
Nextcloud guests app is a utility to create guest users which can only see files shared with them. In affected versions users could change the allowed list of apps, allowing them to use apps that were not intended to be used. 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
权限预留不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Nextcloud 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nextcloud是德国Nextcloud公司的一套开源的自托管文件同步和共享的通信应用平台。 Nextcloud guests存在安全漏洞，该漏洞源于所有用户都可以为来宾用户重置应用列表。受影响的产品和版本：Nextcloud guests 2.4.0及更高版本，2.5.0及更高版本，3.0.0及更高版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
nextcloud security-advisories >= 2.4.0, < 2.4.1 -

II. Public POCs for CVE-2024-22401

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III. Intelligence Information for CVE-2024-22401

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Patches & Fixes for CVE-2024-22401 (1)

Vendor Advisories for CVE-2024-22401 (1)

Other References for CVE-2024-22401 (1)

Same Patch Batch · nextcloud · 2024-01-18 · 7 CVEs total

CVE-2024-22212 9.7 CRITICAL Nextcloud global site selector authentication bypass
CVE-2024-22402 5.4 MEDIUM Improper handling of request URLs in Nextcloud Guests app allows guest users to bypass app
CVE-2024-22404 4.1 MEDIUM Permissions bypass in Nextcloud with the files zip app
CVE-2024-22400 3.1 LOW Open redirect in user_saml via RelayState parameter in Nextcloud User Saml
CVE-2024-22403 3.0 LOW OAuth2 authorization codes are valid indefinetly in Nextcloud server
CVE-2024-22213 Cross-site Scripting when sending HTML as a comment in the Nextcloud Deck app

IV. Related Vulnerabilities

Same product: security-advisories
Same vendor: nextcloud
Same weakness: CWE-281

V. Comments for CVE-2024-22401

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