Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2023-28643

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
30/03/2023
Last modified:
06/04/2023

Description

Nextcloud server is an open source home cloud implementation. In affected versions when a recipient receives 2 shares with the same name, while a memory cache is configured, the second share will replace the first one instead of being renamed to `{name} (2)`. It is recommended that the Nextcloud Server is upgraded to 25.0.3 or 24.0.9. Users unable to upgrade should avoid sharing 2 folders with the same name to the same user.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 8.80 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
8.80
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:* 24.0.0 (including) 24.0.9 (excluding)
cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:* 24.0.0 (including) 24.0.9 (excluding)
cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:* 25.0.0 (including) 25.0.3 (excluding)
cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:* 25.0.0 (including) 25.0.3 (excluding)

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


References to Advisories, Solutions, and Tools