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Amazon Linux 2022 : samba (ALAS2022-2022-224)

high Nessus Plugin ID 168583

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Synopsis

The remote Amazon Linux 2022 host is missing a security update.

Description

The version of samba installed on the remote host is prior to 4.16.2-0. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2022-2022-224 advisory.

 - A flaw was found in the way samba implemented SMB1 authentication. An attacker could use this flaw to retrieve the plaintext password sent over the wire even if Kerberos authentication was required.
 (CVE-2016-2124)

 - A flaw was found in the way Samba maps domain users to local users. An authenticated attacker could use this flaw to cause possible privilege escalation. (CVE-2020-25717)

 - A flaw was found in the way samba, as an Active Directory Domain Controller, is able to support an RODC (read-only domain controller). This would allow an RODC to print administrator tickets. (CVE-2020-25718)

 - A flaw was found in the way Samba, as an Active Directory Domain Controller, implemented Kerberos name- based authentication. The Samba AD DC, could become confused about the user a ticket represents if it did not strictly require a Kerberos PAC and always use the SIDs found within. The result could include total domain compromise. (CVE-2020-25719)

 - Kerberos acceptors need easy access to stable AD identifiers (eg objectSid). Samba as an AD DC now provides a way for Linux applications to obtain a reliable SID (and samAccountName) in issued tickets.
 (CVE-2020-25721)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Run 'yum update samba' to update your system.

See Also

https://alas.aws.amazon.com/AL2022/ALAS-2022-224.html

https://alas.aws.amazon.com/cve/html/CVE-2016-2124.html

https://alas.aws.amazon.com/cve/html/CVE-2020-25717.html

https://alas.aws.amazon.com/cve/html/CVE-2020-25718.html

https://alas.aws.amazon.com/cve/html/CVE-2020-25719.html

https://alas.aws.amazon.com/cve/html/CVE-2020-25721.html

https://alas.aws.amazon.com/cve/html/CVE-2020-25722.html

https://alas.aws.amazon.com/cve/html/CVE-2021-20316.html

https://alas.aws.amazon.com/cve/html/CVE-2021-23192.html

https://alas.aws.amazon.com/cve/html/CVE-2021-3738.html

https://alas.aws.amazon.com/cve/html/CVE-2021-44141.html

https://alas.aws.amazon.com/cve/html/CVE-2021-44142.html

https://alas.aws.amazon.com/cve/html/CVE-2022-0336.html

Plugin Details

Severity: High

ID: 168583

File Name: al2022_ALAS2022-2022-224.nasl

Version: 1.5

Type: local

Agent: unix

Published: 12/10/2022

Updated: 12/11/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 8.9

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2021-44142

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 8.4

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C

CVSS Score Source: CVE-2022-0336

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:libsmbclient, p-cpe:/a:amazon:linux:samba, p-cpe:/a:amazon:linux:samba-pidl, p-cpe:/a:amazon:linux:libsmbclient-debuginfo, p-cpe:/a:amazon:linux:libwbclient, p-cpe:/a:amazon:linux:samba-common-libs, p-cpe:/a:amazon:linux:samba-test-libs-debuginfo, p-cpe:/a:amazon:linux:samba-libs, p-cpe:/a:amazon:linux:samba-vfs-iouring, p-cpe:/a:amazon:linux:samba-winbind-krb5-locator, p-cpe:/a:amazon:linux:samba-dc-bind-dlz, p-cpe:/a:amazon:linux:samba-common-tools-debuginfo, p-cpe:/a:amazon:linux:samba-dc-debuginfo, p-cpe:/a:amazon:linux:samba-debugsource, p-cpe:/a:amazon:linux:ctdb-debuginfo, p-cpe:/a:amazon:linux:samba-test, p-cpe:/a:amazon:linux:samba-client-libs, p-cpe:/a:amazon:linux:samba-client-debuginfo, p-cpe:/a:amazon:linux:ctdb, p-cpe:/a:amazon:linux:samba-winbind-krb5-locator-debuginfo, p-cpe:/a:amazon:linux:samba-dc, p-cpe:/a:amazon:linux:samba-test-libs, p-cpe:/a:amazon:linux:samba-winbind-debuginfo, p-cpe:/a:amazon:linux:libwbclient-debuginfo, cpe:/o:amazon:linux:2022, p-cpe:/a:amazon:linux:libwbclient-devel, p-cpe:/a:amazon:linux:samba-winbind-clients, p-cpe:/a:amazon:linux:samba-common-libs-debuginfo, p-cpe:/a:amazon:linux:samba-client-libs-debuginfo, p-cpe:/a:amazon:linux:samba-winbind-clients-debuginfo, p-cpe:/a:amazon:linux:python3-samba-debuginfo, p-cpe:/a:amazon:linux:samba-vfs-iouring-debuginfo, p-cpe:/a:amazon:linux:samba-krb5-printing, p-cpe:/a:amazon:linux:samba-libs-debuginfo, p-cpe:/a:amazon:linux:samba-winbind, p-cpe:/a:amazon:linux:samba-debuginfo, p-cpe:/a:amazon:linux:python3-samba, p-cpe:/a:amazon:linux:samba-winbind-modules-debuginfo, p-cpe:/a:amazon:linux:samba-dc-libs-debuginfo, p-cpe:/a:amazon:linux:samba-client, p-cpe:/a:amazon:linux:python3-samba-test, p-cpe:/a:amazon:linux:samba-common-tools, p-cpe:/a:amazon:linux:samba-dc-provision, p-cpe:/a:amazon:linux:samba-devel, p-cpe:/a:amazon:linux:samba-common, p-cpe:/a:amazon:linux:libsmbclient-devel, p-cpe:/a:amazon:linux:samba-dc-bind-dlz-debuginfo, p-cpe:/a:amazon:linux:python3-samba-dc-debuginfo, p-cpe:/a:amazon:linux:samba-dc-libs, p-cpe:/a:amazon:linux:python3-samba-dc, p-cpe:/a:amazon:linux:samba-krb5-printing-debuginfo, p-cpe:/a:amazon:linux:samba-winbind-modules, p-cpe:/a:amazon:linux:samba-test-debuginfo, p-cpe:/a:amazon:linux:python3-samba-devel

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/6/2022

Vulnerability Publication Date: 11/9/2021

Reference Information

CVE: CVE-2016-2124, CVE-2020-25717, CVE-2020-25718, CVE-2020-25719, CVE-2020-25721, CVE-2020-25722, CVE-2021-20316, CVE-2021-23192, CVE-2021-3738, CVE-2021-44141, CVE-2021-44142, CVE-2022-0336

IAVA: 2021-A-0554-S, 2022-A-0054-S