CVE-2023-28999

Severity CVSS v4.0:

Pending analysis

Type:

CWE-311 Missing Encryption of Sensitive Data

Publication date:

04/04/2023

Last modified:

07/11/2023

Description

Nextcloud is an open-source productivity platform. In Nextcloud Desktop client 3.0.0 until 3.8.0, Nextcloud Android app 3.13.0 until 3.25.0, and Nextcloud iOS app 3.0.5 until 4.8.0, a malicious server administrator can gain full access to an end-to-end encrypted folder. They can decrypt files, recover the folder structure and add new files. This issue is fixed in Nextcloud Desktop 3.8.0, Nextcloud Android 3.25.0, and Nextcloud iOS 4.8.0. No known workarounds are available.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:L CVSS v3.1 Severity and Metrics:

Base Score: 6.40 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:L

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): Low

Base Score 3.x

6.40

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:nextcloud:desktop::::::::	3.0.0 (including)	3.8.0 (excluding)
cpe:2.3:a:nextcloud:nextcloud:::::iphone_os:::*	3.0.5 (including)	4.8.0 (excluding)
cpe:2.3:a:nextcloud:nextcloud:::::android:::*	3.13.0 (including)	3.25.0 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2023-28999

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools