CVE-2022-36109 : Exploit Details and Defense Strategies
Discover the impact of CVE-2022-36109 found in Moby (Docker Engine), allowing attackers to bypass restrictions, potentially accessing sensitive data or executing code within containers. Learn about mitigation steps and version updates.
A vulnerability has been discovered in Moby (Docker Engine) relating to supplementary group permissions. Attackers with direct access to a container may exploit this bug to bypass primary group restrictions, potentially leading to unauthorized access to sensitive data or code execution.
Understanding CVE-2022-36109
This section provides insights into the nature and impact of the vulnerability.
What is CVE-2022-36109?
The bug in Moby (Docker Engine) allows attackers to manipulate supplementary group access, enabling them to bypass primary group restrictions, which could result in unauthorized access to sensitive information or the ability to execute code within the container.
The Impact of CVE-2022-36109
The vulnerability poses a medium threat with a CVSS base score of 6.3. It has low impacts on confidentiality, integrity, and availability, requiring low privileges and no user interaction for exploitation. The attack complexity is low, targeting the network with unchanged scope.
Technical Details of CVE-2022-36109
Explore the specifics of the vulnerability in this section.
Vulnerability Description
The bug arises from the improper setup of supplementary groups in Moby (Docker Engine), allowing attackers to exploit this misconfiguration.
Affected Systems and Versions
Moby versions prior to 20.10.18 are susceptible to this vulnerability, requiring users to update to version 20.10.18 or later to mitigate the risk.
Exploitation Mechanism
The exploit is based on manipulating the supplementary group access within the container to bypass primary group restrictions.
Mitigation and Prevention
Discover key steps to address and prevent the CVE-2022-36109 vulnerability.
Immediate Steps to Take
Users are advised to stop and restart running containers to apply the necessary permissions fix. For those unable to upgrade, a workaround involves altering Dockerfile instructions to ensure proper supplementary group setup.
Long-Term Security Practices
Implement robust container security measures, regularly update software versions, and follow best practices for securing containerized environments.
Patching and Updates
Ensure timely updates to Moby (Docker Engine) version 20.10.18 or higher to eliminate the vulnerability and enhance overall system security.