CVE-2022-29178 : Security Advisory and Response

Cilium, an open-source software responsible for providing and securing network connectivity and load balancing between application workloads, was found to have an incorrect default permissions vulnerability in versions 1.9.16, 1.10.11, and 1.11.15. This vulnerability could allow users with specific group permissions to access Cilium's API via Unix domain sockets, potentially compromising system integrity and availability on the host. A patch has been released in versions 1.9.16, 1.10.11, and 1.11.5 to address this issue. Here's everything you need to know about CVE-2022-29178.

Understanding CVE-2022-29178

This section delves into the details of the vulnerability, its impact, affected systems, exploitation mechanisms, and mitigation strategies.

What is CVE-2022-29178?

CVE-2022-29178 refers to the incorrect default permissions vulnerability in Cilium versions 1.9.16, 1.10.11, and 1.11.15. Users with group ID 1000 could potentially exploit this vulnerability to access the API via Unix domain sockets, leading to integrity and availability risks.

The Impact of CVE-2022-29178

With a CVSS base score of 8.8 (High), this vulnerability poses a significant risk. The attack complexity is low, requiring local access. It could result in high confidentiality, integrity, and availability impacts, with low privileges required for exploitation.

Technical Details of CVE-2022-29178

This section outlines the specific technical aspects of the vulnerability.

Vulnerability Description

The vulnerability arises from incorrect default permissions that allow users in the group ID 1000 to access Cilium's API through Unix domain sockets.

Affected Systems and Versions

Cilium versions prior to 1.9.16, 1.10.11, and 1.11.15 are affected by this vulnerability.

Exploitation Mechanism

Malicious users belonging to the group ID 1000 can exploit this vulnerability to compromise system integrity and availability.

Mitigation and Prevention

To protect your system from CVE-2022-29178, follow these mitigation and prevention strategies.

Immediate Steps to Take

Update Cilium to versions 1.9.16, 1.10.11, or 1.11.5 to patch the vulnerability. Alternatively, modify Cilium's DaemonSet with the specified command to secure the system.

Long-Term Security Practices

Implement strict access controls and regularly monitor and update Cilium to mitigate future vulnerabilities.

Patching and Updates

Stay informed about patches and updates released by Cilium to address security concerns effectively.