CVE-2023-48306— Nextcloud Server DNS pin middleware can be tricked into DNS rebinding allowing SSRF
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I. Basic Information for CVE-2023-48306
Vulnerability Information
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Vulnerability Title
Nextcloud Server DNS pin middleware can be tricked into DNS rebinding allowing SSRF
Source: NVD (National Vulnerability Database)
Vulnerability Description
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.11, 26.0.6, and 27.1.0 of Nextcloud Server and starting in version 22.0.0 and prior to versions 22.2.10.16, 23.0.12.11, 24.0.12.7, 25.0.11, 26.0.6, and 27.1.0 of Nextcloud Enterprise Server, the DNS pin middleware was vulnerable to DNS rebinding allowing an attacker to perform SSRF as a final result. Nextcloud Server 25.0.11, 26.0.6, and 27.1.0 and Nextcloud Enterprise Server 22.2.10.16, 23.0.12.11, 24.0.12.7, 25.0.11, 26.0.6, and 27.1.0 contain patches for this issue. No known workarounds are available.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
服务端请求伪造(SSRF)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Nextcloud 代码问题漏洞
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 Server 25.0.11之前、26.0.6之前 和 27.1.0 之前版本以及 Nextcloud Enterprise Server 22.2.10.16之前、23.0.12.11之前、24.0.12.7之前、25.0.11之前、26.0.6 之前和 27.1.0之前版本存在代码问题漏洞，该漏洞源于DNS pin 中间件容易受到 DNS 重新绑定的影响，攻击者利用该漏洞可以执行服务端请
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 | >= 22.0.0, < 22.2.10.16 | - |
II. Public POCs for CVE-2023-48306
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|---|
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- https://hackerone.com/reports/2115212x_refsource_MISC
- https://github.com/nextcloud/server/pull/40234x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2023-48306
Same Patch Batch · nextcloud · 2023-11-21 · 8 CVEs total
| CVE-2023-48239 | 8.5 HIGH | Nextcloud Server users can make external storage mount points inaccessible for other users |
| CVE-2023-48304 | 4.3 MEDIUM | Nextcloud Server vulnerable to attacker enabling/disabling birthday calendar for any user |
| CVE-2023-48305 | 4.2 MEDIUM | Nextcloud Server user_ldap app logs user passwords in the log file on level debug |
| CVE-2023-48307 | 3.5 LOW | Nextcloud Mail app vulnerable to Server-Side Request Forgery |
| CVE-2023-48302 | 3.5 LOW | Nextcloud Server vulnerable to Self XSS when pasting HTML into Text app with Ctrl+Shift+V |
| CVE-2023-48301 | 3.5 LOW | Nextcloud Server HTML injection in search UI when selecting a circle with HTML in the disp |
| CVE-2023-48303 | 2.4 LOW | Nextcloud Server admins can change authentication details of user configured external stor |
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