#VU84544 Security features bypass in Nextcloud Calendar - CVE-2023-48308

Vulnerability identifier: #VU84544

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-48308

CWE-ID: CWE-254

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Nextcloud Calendar
Web applications / Modules and components for CMS

Vendor: Nextcloud

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to uncleared debug information. A remote user can gain access to stacktrace and internal paths of the server when generating an exception while editing a calendar appointment.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Nextcloud Calendar: 3.0.0

---

External links
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-fv3c-qvjr-5rv8

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.