Critical: samba

Issue Overview:

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. (CVE-2020-14318)

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. (CVE-2020-14323)

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. (CVE-2020-1472)

Affected Packages:

samba

Issue Correction:
Run yum update samba to update your system.

New Packages:

i686:  
    samba-client-4.10.16-9.56.amzn1.i686  
    samba-libs-4.10.16-9.56.amzn1.i686  
    samba-common-libs-4.10.16-9.56.amzn1.i686  
    ctdb-4.10.16-9.56.amzn1.i686  
    libwbclient-4.10.16-9.56.amzn1.i686  
    samba-client-libs-4.10.16-9.56.amzn1.i686  
    samba-debuginfo-4.10.16-9.56.amzn1.i686  
    libsmbclient-devel-4.10.16-9.56.amzn1.i686  
    samba-winbind-modules-4.10.16-9.56.amzn1.i686  
    samba-python-test-4.10.16-9.56.amzn1.i686  
    samba-krb5-printing-4.10.16-9.56.amzn1.i686  
    samba-devel-4.10.16-9.56.amzn1.i686  
    libsmbclient-4.10.16-9.56.amzn1.i686  
    samba-python-4.10.16-9.56.amzn1.i686  
    samba-4.10.16-9.56.amzn1.i686  
    samba-winbind-4.10.16-9.56.amzn1.i686  
    samba-test-libs-4.10.16-9.56.amzn1.i686  
    samba-common-tools-4.10.16-9.56.amzn1.i686  
    libwbclient-devel-4.10.16-9.56.amzn1.i686  
    samba-winbind-clients-4.10.16-9.56.amzn1.i686  
    ctdb-tests-4.10.16-9.56.amzn1.i686  
    samba-winbind-krb5-locator-4.10.16-9.56.amzn1.i686  
    samba-test-4.10.16-9.56.amzn1.i686  
  
noarch:  
    samba-pidl-4.10.16-9.56.amzn1.noarch  
    samba-common-4.10.16-9.56.amzn1.noarch  
  
src:  
    samba-4.10.16-9.56.amzn1.src  
  
x86_64:  
    samba-winbind-modules-4.10.16-9.56.amzn1.x86_64  
    libwbclient-devel-4.10.16-9.56.amzn1.x86_64  
    samba-4.10.16-9.56.amzn1.x86_64  
    samba-client-4.10.16-9.56.amzn1.x86_64  
    samba-common-tools-4.10.16-9.56.amzn1.x86_64  
    samba-client-libs-4.10.16-9.56.amzn1.x86_64  
    libwbclient-4.10.16-9.56.amzn1.x86_64  
    samba-test-4.10.16-9.56.amzn1.x86_64  
    samba-python-4.10.16-9.56.amzn1.x86_64  
    ctdb-4.10.16-9.56.amzn1.x86_64  
    samba-winbind-clients-4.10.16-9.56.amzn1.x86_64  
    samba-devel-4.10.16-9.56.amzn1.x86_64  
    libsmbclient-4.10.16-9.56.amzn1.x86_64  
    samba-krb5-printing-4.10.16-9.56.amzn1.x86_64  
    samba-libs-4.10.16-9.56.amzn1.x86_64  
    samba-winbind-4.10.16-9.56.amzn1.x86_64  
    samba-test-libs-4.10.16-9.56.amzn1.x86_64  
    samba-winbind-krb5-locator-4.10.16-9.56.amzn1.x86_64  
    libsmbclient-devel-4.10.16-9.56.amzn1.x86_64  
    samba-python-test-4.10.16-9.56.amzn1.x86_64  
    samba-debuginfo-4.10.16-9.56.amzn1.x86_64  
    samba-common-libs-4.10.16-9.56.amzn1.x86_64  
    ctdb-tests-4.10.16-9.56.amzn1.x86_64  

Additional References

Red Hat: CVE-2020-14318, CVE-2020-14323, CVE-2020-1472

Mitre: CVE-2020-14318, CVE-2020-14323, CVE-2020-1472