CVE-2022-41968 : Security Advisory and Response
Discover the impact of CVE-2022-41968 on Nextcloud Server. Learn about the unvalidated calendar name lengths, affected versions, and mitigation strategies to protect your systems.
Nextcloud Server's calendar name length not validated before writing to database.
Understanding CVE-2022-41968
The vulnerability in Nextcloud Server allows attackers to consume excessive resources by sending large amounts of data against the database due to unvalidated calendar name lengths.
What is CVE-2022-41968?
Nextcloud Server versions prior to 23.0.10 and 24.0.5 do not validate calendar name lengths before writing to the database, enabling attackers to impact system availability and performance.
The Impact of CVE-2022-41968
The vulnerability has a low base score of 3.5 with low severity, affecting confidentiality, integrity, and availability. Successful exploitation may lead to resource exhaustion and service disruption.
Technical Details of CVE-2022-41968
The vulnerability in Nextcloud Server arises from unvalidated calendar name lengths, impacting certain versions of the software.
Vulnerability Description
Prior to versions 23.0.10 and 24.0.5, Nextcloud Server does not properly validate calendar name lengths before writing to the database, potentially resulting in resource consumption attacks.
Affected Systems and Versions
- Vendor: Nextcloud
- Product: Security Advisories
- Affected Versions:
- < 23.0.10 (Affected)
= 24.0.0, < 24.0.5 (Affected)
Exploitation Mechanism
Attackers can exploit this vulnerability by sending excessive data inputs related to calendar names, impacting system resources and operations.
Mitigation and Prevention
Effective mitigation strategies can help organizations minimize the risk posed by CVE-2022-41968.
Immediate Steps to Take
- Update Nextcloud Server to versions 23.0.10 or 24.0.5 to apply necessary patches and protect systems from potential exploitation.
Long-Term Security Practices
- Implement secure coding practices to validate user inputs and prevent resource consumption vulnerabilities.
Patching and Updates
- Regularly monitor security advisories and apply updates promptly to address known vulnerabilities and enhance system security.