All versions of macaddress are vulnerable to command injection. For this vulnerability to be exploited an attacker needs to control the iface argument to the one method.
Update to version 0.2.9 or later.
{
"nvd_published_at": null,
"cwe_ids": [
"CWE-78"
],
"severity": "CRITICAL",
"github_reviewed": true,
"github_reviewed_at": "2020-06-16T21:49:44Z"
}