CVE-2024-22212— Nextcloud global site selector authentication bypass
Quick assessment
Affected
nextcloud security-advisories
Exploitation
Public or AI PoC available; prioritize validation
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 Global Site Selector存在访问控制错误漏洞，该漏洞源于密码验证方法中存在安全漏洞，允许攻击者以其他用户身份进行身份验证。受影响的产品和版本：Nextcloud Global Site Selector 1.1.0及更高版本， 2.0.0及更高版本， 2.1.0及更高版本，2.2.0及更高版本，2.3.0及更高版本，2.4.0及更高版本。
Possible ATT&CK Techniques 1 AI
T1078 · Valid Accounts
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I. Basic Information for CVE-2024-22212
Vulnerability Information
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Vulnerability Title
Nextcloud global site selector authentication bypass
Source: CVE Program / CVE List V5
Vulnerability Description
Nextcloud Global Site Selector is a tool which allows you to run multiple small Nextcloud instances and redirect users to the right server. A problem in the password verification method allows an attacker to authenticate as another user. It is recommended that the Nextcloud Global Site Selector is upgraded to version 1.4.1, 2.1.2, 2.3.4 or 2.4.5. There are no known workarounds for this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Nextcloud 访问控制错误漏洞
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 Global Site Selector存在访问控制错误漏洞，该漏洞源于密码验证方法中存在安全漏洞，允许攻击者以其他用户身份进行身份验证。受影响的产品和版本：Nextcloud Global Site Selector 1.1.0及更高版本， 2.0.0及更高版本， 2.1.0及更高版本，2.2.0及更高版本，2.3.0及更高版本，2.4.0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)
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Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| nextcloud | security-advisories | >= 1.1.0, < 1.4.1 | - |
|
II. Public POCs for CVE-2024-22212
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
Qwen3.6-35B-A3B
· 11187 chars
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III. Intelligence Information for CVE-2024-22212
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Patches & Fixes for CVE-2024-22212 (1)
Vendor Advisories for CVE-2024-22212 (1)
Other References for CVE-2024-22212 (1)
-
https://hackerone.com/reports/2248689 x_refsource_MISC
Same Patch Batch · nextcloud · 2024-01-18 · 7 CVEs total
| CVE-2024-22402 | 5.4 MEDIUM | Improper handling of request URLs in Nextcloud Guests app allows guest users to bypass app |
| CVE-2024-22401 | 4.1 MEDIUM | All users can reset the allowed apps list for Nextcloud Guest App users |
| 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 |
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V. Comments for CVE-2024-22212
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