CVE-2020-13597 : Vulnerability Insights and Analysis
Learn about CVE-2020-13597 affecting Calico and Calico Enterprise. Understand the impact, affected versions, and mitigation steps to prevent information disclosure and network traffic redirection.
Calico nodes IPv6 traffic redirection from route advertisement
Understanding CVE-2020-13597
This CVE involves vulnerabilities in Calico and Calico Enterprise that could lead to information disclosure due to IPv6 configuration issues.
What is CVE-2020-13597?
Clusters using Calico and Calico Enterprise may face information disclosure risks if IPv6 is enabled but unused. Attackers could redirect network traffic by compromising a pod with sufficient privileges.
The Impact of CVE-2020-13597
The vulnerability could allow attackers to redirect network traffic, potentially leading to data exposure and manipulation within affected systems.
Technical Details of CVE-2020-13597
This section provides detailed technical insights into the CVE.
Vulnerability Description
The vulnerability allows a compromised pod to reconfigure a node's IPv6 interface, redirecting network traffic due to default route advertisement acceptance.
Affected Systems and Versions
- Calico versions 3.14.0 and below
- Calico Enterprise versions 2.8.2 and below
Exploitation Mechanism
Attackers can exploit this vulnerability by compromising a pod with sufficient privileges to reconfigure the node's IPv6 interface, redirecting network traffic.
Mitigation and Prevention
Protect your systems from CVE-2020-13597 with the following steps:
Immediate Steps to Take
- Disable IPv6 if not in use
- Implement network segmentation to limit pod privileges
- Monitor network traffic for anomalies
Long-Term Security Practices
- Regularly update Calico and Calico Enterprise to patched versions
- Conduct security audits to identify and address vulnerabilities
Patching and Updates
- Apply vendor-released patches promptly
- Stay informed about security bulletins and updates from Tigera Inc.