CVE-2023-48304: Nextcloud Server provides data storage for Nextcloud, an open source cloud platform

Medium severity · published Nov 21, 2023

CVE-2023-48304

Nextcloud Server provides data storage for Nextcloud, an open source cloud platform

4.3

CVSS

0.6%

EPSS

On KEV

Description

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, an attacker could enable and disable the birthday calendar for any user on the same server. 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.

CVSS vector

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

Attack vector

Network

Complexity

Low

Privileges

Low

User interaction

None

Confidentiality

None

Integrity

Low

Availability

None

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)0.6% · higher than 49% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Nextcloud Server · Nextcloud

22.0.0 through 22.2.10.16; 23.0.0 before 23.0.12.11; 24.0.0 before 24.0.12.7; 25.0.0 before 25.0.11; 25.0.0 before 25.0.11; 26.0.0 before 26.0.6; +3 more · source: NVD

Affected product

Nextcloud Server

Nextcloud

All Nextcloud Server CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2023-48304

CVE.org

https://www.cve.org/CVERecord?id=CVE-2023-48304

Vendor Advisory

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8jwv-c8c8-9fr3

Issue Tracking

https://github.com/nextcloud/server/pull/40292

Exploit

https://hackerone.com/reports/2112973