CVE-2022-39211 Explained : Impact and Mitigation
Learn about CVE-2022-39211 affecting Nextcloud Server, a Server-Side Request Forgery (SSRF) vulnerability leading to potential filter bypass. Upgrade to secure versions for protection.
Nextcloud server is an open source personal cloud platform that has been affected by a Server-Side Request Forgery (SSRF) vulnerability that allows locally running web services to be requested erroneously. Upgrading to specific versions is recommended to address this issue.
Understanding CVE-2022-39211
This CVE details a Server-Side Request Forgery (SSRF) vulnerability in Nextcloud Server that can potentially lead to a filter bypass.
What is CVE-2022-39211?
CVE-2022-39211 is a vulnerability in Nextcloud Server that allows locally running web services to be found and requested erroneously due to a potential filter bypass. This can be exploited by an attacker to perform SSRF attacks.
The Impact of CVE-2022-39211
The impact of this vulnerability is considered low, with a CVSS base score of 3. It requires low privileges and user interaction to exploit, affecting the confidentiality of the information.
Technical Details of CVE-2022-39211
This section provides specific technical details related to the vulnerability.
Vulnerability Description
The vulnerability in affected versions of Nextcloud Server allows SSRF attacks, potentially leading to a filter bypass.
Affected Systems and Versions
Versions prior to 23.0.8 and between 24.0.0 and 24.0.4 of Nextcloud Server are affected by this vulnerability.
Exploitation Mechanism
The vulnerability can be exploited by attackers to make requests to local web services erroneously, potentially leading to unauthorized access.
Mitigation and Prevention
To address CVE-2022-39211 and mitigate its impact, it is essential to take immediate steps and implement long-term security practices.
Immediate Steps to Take
It is recommended to upgrade Nextcloud Server to versions 23.0.8 or 24.0.4, and Nextcloud Enterprise Server to versions 22.2.10.4, 23.0.8, or 24.0.4 to prevent exploitation of this vulnerability.
Long-Term Security Practices
Implement network security measures, restrict access to critical systems, and regularly update and patch software to prevent similar vulnerabilities.
Patching and Updates
Stay informed about security advisories related to Nextcloud Server and promptly apply patches and updates to stay protected.