Multiple path traversal vulnerabilities exist in smbserver.py in Impacket before 0.9.23. An attacker that connects to a running smbserver instance can list and write to arbitrary files via ../ directory traversal. This could potentially be abused to achieve arbitrary code execution by replacing /etc/shadow or an SSH authorized key.
{
"severity": "CRITICAL",
"github_reviewed": true,
"cwe_ids": [
"CWE-22"
],
"nvd_published_at": "2021-05-05T11:15:00Z",
"github_reviewed_at": "2021-05-19T20:42:46Z"
}