How can an attacker exploit CVE-2022-41968?

An attacker can exploit CVE-2022-41968 by sending excessive amounts of data against the Nextcloud Server database.

What is the severity of CVE-2022-41968?

CVE-2022-41968 has a severity rating of 5.3 (medium).

Which versions of Nextcloud Server are affected by CVE-2022-41968?

Versions 23.0.0 to 23.0.10 and versions 24.0.0 to 24.0.5 of Nextcloud Server are affected by CVE-2022-41968.

How can I fix CVE-2022-41968?

To fix CVE-2022-41968, update Nextcloud Server to version 23.0.10 or 24.0.5, which contain patches for the vulnerability.

Vulnerability/
CVE-2022-41968

medium

5.3

CWE

1284 400

1/12/2022

3/8/2024

CVE-2022-41968: Nextcloud Server's calendar name length not validated before writing to database

Q: What is CVE-2022-41968?

CVE-2022-41968 is a vulnerability in Nextcloud Server where calendar name lengths are not validated before writing to a database, allowing an attacker to send unnecessary amounts of data against the database.

First published: Thu Dec 01 2022(Updated: )

Nextcloud Server is an open source personal cloud server. Prior to versions 23.0.10 and 24.0.5, calendar name lengths are not validated before writing to a database. As a result, an attacker can send unnecessary amounts of data against the database. Version 23.0.10 and 24.0.5 contain patches for the issue. No known workarounds are available.

Credit: security-advisories@github.com

Affected Software	Affected Version	How to fix
Nextcloud Nextcloud Server	>=23.0.0<23.0.10
Nextcloud Nextcloud Server	>=23.0.0<23.0.10
Nextcloud Nextcloud Server	>=24.0.0<24.0.5
Nextcloud Nextcloud Server	>=24.0.0<24.0.5

Remedy

https://github.com/nextcloud/server/pull/33139

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Reference Links

Frequently Asked Questions

What is CVE-2022-41968?
CVE-2022-41968 is a vulnerability in Nextcloud Server where calendar name lengths are not validated before writing to a database, allowing an attacker to send unnecessary amounts of data against the database.
How can an attacker exploit CVE-2022-41968?
An attacker can exploit CVE-2022-41968 by sending excessive amounts of data against the Nextcloud Server database.
What is the severity of CVE-2022-41968?
CVE-2022-41968 has a severity rating of 5.3 (medium).
Which versions of Nextcloud Server are affected by CVE-2022-41968?
Versions 23.0.0 to 23.0.10 and versions 24.0.0 to 24.0.5 of Nextcloud Server are affected by CVE-2022-41968.
How can I fix CVE-2022-41968?
To fix CVE-2022-41968, update Nextcloud Server to version 23.0.10 or 24.0.5, which contain patches for the vulnerability.

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