Critical: samba security update (Amazon Linux 2)

Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2020-1472: A flaw was found in the Microsoft Windows Netlogon Remote Protocol (MS-NRPC), where it reuses a known, static, zero-value initialization vector (IV) in AES-CFB8 mode. This flaw allows an unauthenticated attacker to impersonate a domain-joined computer, including a domain controller, and possibly obtain domain administrator privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. 1879822: CVE-2020-1472 samba: Netlogon elevation of privilege vulnerability (Zerologon) CVE-2020-14323: A null pointer dereference flaw was found in Samba's winbind service. This flaw allows a local user to crash the winbind service, causing a denial of service. The highest threat from this vulnerability is to system availability. 1891685: CVE-2020-14323 samba: Unprivileged user can crash winbind CVE-2020-14318: A flaw was found in the way samba handled file and directory permissions. An authenticated user could use this flaw to gain access to certain file and directory information which otherwise would be unavailable to the attacker. 1892631: CVE-2020-14318 samba: Missing handle permissions check in SMB1/2/3 ChangeNotify