CVE-2023-39961 Text does not respect "Allow download" permissions

2023-08-1017:18:40

CWE-284

GitHub_M

www.cve.org

nextcloud

server

unauthorized download

shared images

text files

security issue

CVSS3

3.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

5.2

Confidence

High

EPSS

0.001

Percentile

35.0%

JSON

Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 24.0.4 and prior to versions 25.0.9, 26.0.4, and 27.0.1, when a folder with images or an image was shared without download permissions, the user could add the image inline into a text file and download it. Nextcloud Server versions 25.0.9, 26.0.4, and 27.0.1 and Nextcloud Enterprise Server versions 24.0.12.5, 25.0.9, 26.0.4, and 27.0.1 contain a patch for this issue. No known workarounds are available.

CNA Affected

[
  {
    "vendor": "nextcloud",
    "product": "security-advisories",
    "versions": [
      {
        "version": ">= 24.0.4, < 24.0.12.5",
        "status": "affected"
      },
      {
        "version": ">= 25.0.0, < 25.0.9",
        "status": "affected"
      },
      {
        "version": ">= 27.0.0, < 27.0.1",
        "status": "affected"
      },
      {
        "version": ">= 26.0.0, < 26.0.4",
        "status": "affected"
      }
    ]
  }
]