CVE-2023-25821 Nextcloud download permissions can be changed by resharer

2023-02-2423:39:51

CWE-284

GitHub_M

www.cve.org

nextcloud

improper access control

reshare permissions

security patch

5.7 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

0.001 Low

EPSS

Percentile

49.7%

JSON

Nextcloud is an Open Source private cloud software. Versions 24.0.4 and above, prior to 24.0.7, and 25.0.0 and above, prior to 25.0.1, contain Improper Access Control. Secure view for internal shares can be circumvented if reshare permissions are also given. This issue is patched in versions 24.0.7 and 25.0.1. No workaround is available.

CNA Affected

[
  {
    "vendor": "nextcloud",
    "product": "security-advisories",
    "versions": [
      {
        "version": ">= 24.0.4, < 24.0.7",
        "status": "affected"
      },
      {
        "version": ">= 25.0.0, < 25.0.1",
        "status": "affected"
      }
    ]
  }
]