CVE-2023-45150 MEDIUM

CVE-2023-45150: Inviting excessive long email addresses to a calendar event makes the Nextcloud server unresponsive

Vendor Nextcloud

Product security-advisories

Weakness CWE-400

Published October 16, 2023

Last update September 16, 2024

View on NVD All CVEs

CVSS base score

4.3/10

Attack vector Network

Attack complexity Low

Privileges required Low

User interaction None

Confidentiality None

Integrity None

CVSS vector

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

What the vulnerability does

01Description

Nextcloud calendar is a calendar app for the Nextcloud server platform. Due to missing precondition checks the server was trying to validate strings of any length as email addresses even when megabytes of data were provided, eventually making the server busy and unresponsive. It is recommended that the Nextcloud Calendar app is upgraded to 4.4.4. The only workaround for users unable to upgrade is to disable the calendar app.

Key dates

02Disclosure timeline

October 16, 2023 CVE published

September 16, 2024 Record updated

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2023-45150 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/400.html