CVE-2020-13401 Explained : Impact and Mitigation

An issue was discovered in Docker Engine before 19.03.11 where an attacker in a container with specific capabilities can manipulate IPv6 router advertisements, leading to potential security risks.

Understanding CVE-2020-13401

This CVE identifies a vulnerability in Docker Engine that could allow an attacker to spoof external IPv6 hosts, access sensitive data, or disrupt services.

What is CVE-2020-13401?

The vulnerability in Docker Engine prior to version 19.03.11 enables an attacker within a container with CAP_NET_RAW capability to create malicious IPv6 router advertisements.

The Impact of CVE-2020-13401

The exploitation of this vulnerability could result in various security risks, including spoofing external IPv6 hosts, unauthorized access to sensitive information, or causing a denial of service.

Technical Details of CVE-2020-13401

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

The issue in Docker Engine allows an attacker with specific container capabilities to craft IPv6 router advertisements, posing a threat to the network's integrity.

Affected Systems and Versions

Docker Engine versions before 19.03.11 are vulnerable to this exploit.

Exploitation Mechanism

By leveraging the CAP_NET_RAW capability within a container, an attacker can manipulate IPv6 router advertisements to carry out malicious activities.

Mitigation and Prevention

Protecting systems from CVE-2020-13401 requires immediate actions and long-term security measures.

Immediate Steps to Take

Upgrade Docker Engine to version 19.03.11 or newer to mitigate the vulnerability.
Restrict container capabilities to minimize the risk of exploitation.

Long-Term Security Practices

Regularly monitor and audit container activities to detect any suspicious behavior.
Implement network segmentation to isolate containers and limit their impact in case of a breach.

Patching and Updates

Stay informed about security advisories and promptly apply patches to address known vulnerabilities.