CVE-2022-39330 : What You Need to Know

Nextcloud Server versions prior to 23.0.10 and 24.0.6, and Nextcloud Enterprise Server versions prior to 22.2.10, 23.0.10, and 24.0.6 are vulnerable to database resource exhaustion for logged-in users. This vulnerability can slow down the system by generating excessive database and CPU load.

Understanding CVE-2022-39330

This CVE affects Nextcloud Server and Nextcloud Enterprise Server, allowing attackers to impact system performance through resource exhaustion.

What is CVE-2022-39330?

CVE-2022-39330 relates to a security issue in Nextcloud Server where a logged-in attacker can deliberately overload the system, causing performance degradation.

The Impact of CVE-2022-39330

The vulnerability allows an authenticated attacker to consume high amounts of database and CPU resources, leading to system slowdowns and potential denial of service.

Technical Details of CVE-2022-39330

This section outlines the specifics of the vulnerability, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability in Nextcloud Server versions prior to 23.0.10 and 24.0.6, and Nextcloud Enterprise Server versions prior to 22.2.10, 23.0.10, and 24.0.6 allows a logged-in attacker to impact system performance by consuming excessive resources.

Affected Systems and Versions

Nextcloud Server versions < 23.0.10 and < 24.0.6, and Nextcloud Enterprise Server versions < 22.2.10, 23.0.10, and 24.0.6 are affected by this vulnerability.

Exploitation Mechanism

By exploiting this vulnerability, an authenticated attacker can generate a high amount of database and CPU load, leading to performance degradation.

Mitigation and Prevention

To mitigate the risks associated with CVE-2022-39330, immediate steps and long-term security practices are recommended.

Immediate Steps to Take

Disable the Circles app as a workaround to prevent attackers from exploiting this vulnerability and reduce the risk of resource exhaustion.

Long-Term Security Practices

Keep systems updated with the latest patches and security updates to address known vulnerabilities and protect against potential threats.

Patching and Updates

Ensure that Nextcloud Server is updated to versions 23.0.10 and 24.0.6, and Nextcloud Enterprise Server to versions 22.2.10, 23.0.10, and 24.0.6 to apply the necessary patches.