CVE-2022-24769 : Exploit Details and Defense Strategies
Learn about CVE-2022-24769, a vulnerability in Moby (Docker Engine) prior to version 20.10.14 allowing unauthorized users to gain elevated file capabilities within containers. Find out the impact, technical details, and mitigation steps.
A vulnerability in Moby (Docker Engine) prior to version 20.10.14 allowed containers to start with non-empty inheritable Linux process capabilities, potentially enabling unauthorized users and processes to elevate file capabilities. Here's what you need to know about CVE-2022-24769.
Understanding CVE-2022-20657
This section will explain the nature of the vulnerability and its impact.
What is CVE-2022-20657?
CVE-2022-24769 involves an issue where containers in Moby were incorrectly started with non-empty inheritable Linux process capabilities, allowing unauthorized users to gain elevated file capabilities within the container.
The Impact of CVE-2022-20657
The vulnerability affected containers using Linux users and groups for privilege separation, potentially allowing unauthorized users and processes to access inheritable file capabilities. The bug did not impact the container security sandbox, as the inheritable set did not exceed the bounding set.
Technical Details of CVE-2022-20657
This section will provide more technical insights into the vulnerability.
Vulnerability Description
Containers started with inheritable file capabilities in Moby prior to version 20.10.14 allowed unauthorized users and processes to gain unnecessary capabilities, posing a security risk.
Affected Systems and Versions
The vulnerability impacted Moby versions < 20.10.14, affecting containers that utilized Linux users and groups for security isolation.
Exploitation Mechanism
Unauthorized users and processes could exploit this issue by gaining unnecessary file capabilities within the container, potentially elevating their privileges.
Mitigation and Prevention
Learn how to mitigate and prevent the exploitation of CVE-2022-20657.
Immediate Steps to Take
To address this vulnerability, update Moby (Docker Engine) to version 20.10.14 or higher. Running containers should be stopped, deleted, and recreated to reset inheritable capabilities.
Long-Term Security Practices
Implement security best practices such as regularly updating container software and monitoring for unusual container behavior.
Patching and Updates
Stay informed about security advisories and updates for Moby to ensure your containers remain secure.