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.
github.com/containernetworking/cni/pkg/invoke
{ "nvd_published_at": "2021-03-26T22:15:00Z", "cwe_ids": [ "CWE-20", "CWE-22" ], "severity": "HIGH", "github_reviewed": true, "github_reviewed_at": "2021-05-18T21:07:06Z" }