CVE-2021-20206
7.2 · HIGHOverview
CVE-2021-20206 is a high-severity vulnerability affecting linuxfoundation container_network_interface. It was published on March 26, 2021 and has a CVSS 3.1 base score of 7.2 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
An improper limitation of path name flaw was found in containernetworking/cni in versions before 0.8.1. When specifying the plugin to load in the 'type' field in the network configuration, it is possible to use special elements such as "../" separators to reference binaries elsewhere on the system. This flaw allows an attacker to execute other existing binaries other than the cni plugins/types, such as 'reboot'. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
Remediation
Check the references section for vendor advisories and patches from linuxfoundation. Update container_network_interface to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| linuxfoundation | container_network_interface | >= 0, < 0.8.1 | Affected |
Frequently Asked Questions
What is CVE-2021-20206?
CVE-2021-20206 is a high-severity vulnerability affecting linuxfoundation container_network_interface. It was published on March 26, 2021 and has a CVSS 3.1 base score of 7.2 (HIGH).
How severe is CVE-2021-20206?
This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-20206?
Check the references section for vendor advisories and patches from linuxfoundation. Update container_network_interface to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-20206?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-20206 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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