CVE-2023-48306 Nextcloud Server DNS pin middleware can be tricked into DNS rebinding allowing SSRF

2023-11-2122:20:28

CWE-918

GitHub_M

www.cve.org

nextcloud

server

dns pin

middleware

dns rebinding

ssrf

vulnerability

patch

enterprise.

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

AI Score

9.6

Confidence

High

EPSS

0.001

Percentile

29.9%

JSON

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.

CNA Affected

[
  {
    "vendor": "nextcloud",
    "product": "security-advisories",
    "versions": [
      {
        "version": ">= 22.0.0, < 22.2.10.16",
        "status": "affected"
      },
      {
        "version": ">= 23.0.0, < 23.0.12.11",
        "status": "affected"
      },
      {
        "version": ">= 24.0.0, < 24.0.12.7",
        "status": "affected"
      },
      {
        "version": ">= 25.0.0, < 25.0.11",
        "status": "affected"
      },
      {
        "version": ">= 26.0.0, < 26.0.6",
        "status": "affected"
      },
      {
        "version": ">= 27.0.0, < 27.1.0",
        "status": "affected"
      }
    ]
  }
]