Samba 4.13.x < 4.13.17 / 4.14.x < 4.14.12 / 4.15.x < 4.15.5 Multiple Vulnerabilities - Nessus

High Plugin ID: 157360

This page contains detailed information about the Samba 4.13.x < 4.13.17 / 4.14.x < 4.14.12 / 4.15.x < 4.15.5 Multiple Vulnerabilities Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Table Of Contents

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Plugin Overview
Vulnerability Information

Synopsis
Description
Solution

Public Exploits
Risk Information
Plugin Source
How to Run
References
Version

Plugin Overview

ID: 157360
Name: Samba 4.13.x < 4.13.17 / 4.14.x < 4.14.12 / 4.15.x < 4.15.5 Multiple Vulnerabilities
Filename: samba_4_15_5.nasl
Vulnerability Published: 2022-01-31
This Plugin Published: 2022-02-03
Last Modification Time: 2022-04-05
Plugin Version: 1.4
Plugin Type: remote
Plugin Family: Misc.
Dependencies: smb_nativelanman.nasl
Required KB Items [?]: SMB/NativeLanManager, SMB/samba

Vulnerability Information

Severity: High
Vulnerability Published: 2022-01-31
Patch Published: 2022-01-31
CVE [?]: CVE-2021-44141, CVE-2021-44142, CVE-2022-0336
CPE [?]: cpe:/a:samba:samba

Synopsis

The remote Samba server is potentially affected by multiple vulnerabilities.

Description

The version of Samba running on the remote host is 4.13.x prior to 4.13.17, 4.14.x prior to 4.14.12, or 4.15.x prior to 4.15.5. It is, therefore, affected by multiple vulnerabilities:

- Out-of-bounds heap read/write vulnerability in VFS module vfs_fruit allows code execution. (CVE-2021-44142)

- Information leak via symlinks of existence of files or directories outside of the exported share. (CVE-2021-44141)

- Samba AD users with permission to write to an account can impersonate arbitrary services. (CVE-2022-0336)

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

Solution

Upgrade to Samba version 4.13.17, 4.14.12, or 4.15.5 or later.

Public Exploits

Target Network Port(s): N/A
Target Asset(s): N/A
Exploit Available: True (GitHub)
Exploit Ease: Exploits (PoCs) are available

Here's the list of publicly known exploits and PoCs for verifying the Samba 4.13.x < 4.13.17 / 4.14.x < 4.14.12 / 4.15.x < 4.15.5 Multiple Vulnerabilities vulnerability:

GitHub: https://github.com/backloop-biz/CVE_checks
[CVE-2021-44142]
GitHub: https://github.com/gudyrmik/CVE-2021-44142
[CVE-2021-44142]
GitHub: https://github.com/horizon3ai/CVE-2021-44142
[CVE-2021-44142]
GitHub: https://github.com/hrsman/Samba-CVE-2021-44142
[CVE-2021-44142]

Before running any exploit against any system, make sure you are authorized by the owner of the target system(s) to perform such activity. In any other case, this would be considered as an illegal activity.

WARNING: Beware of using unverified exploits from sources such as GitHub or Exploit-DB. These exploits and PoCs could contain malware. For more information, see how to use exploits safely.

Risk Information

CVSS Score Source [?]: CVE-2021-44142
CVSS V2 Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C/E:U/RL:OF/RC:C

CVSS Base Score:	9.0 (High)
Impact Subscore:	10.0
Exploitability Subscore:	8.0
CVSS Temporal Score:	6.7 (Medium)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	6.7 (Medium)

CVSS V3 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

CVSS Base Score:	8.8 (High)
Impact Subscore:	5.9
Exploitability Subscore:	2.8
CVSS Temporal Score:	7.7 (High)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	7.7 (High)

STIG Severity [?]: I
STIG Risk Rating: High

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Plugin Source

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable, Inc.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(157360);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/05");

  script_cve_id("CVE-2021-44141", "CVE-2021-44142", "CVE-2022-0336");
  script_xref(name:"IAVA", value:"2022-A-0054");

  script_name(english:"Samba 4.13.x < 4.13.17 / 4.14.x < 4.14.12 / 4.15.x < 4.15.5 Multiple Vulnerabilities");

  script_set_attribute(attribute:"synopsis", value:
"The remote Samba server is potentially affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of Samba running on the remote host is 4.13.x prior to 4.13.17, 4.14.x prior to 4.14.12, or 4.15.x prior
to 4.15.5.  It is, therefore, affected by multiple vulnerabilities:

  - Out-of-bounds heap read/write vulnerability in VFS module vfs_fruit allows code execution. (CVE-2021-44142)

  - Information leak via symlinks of existence of	files or directories outside of the exported share. (CVE-2021-44141)

  - Samba AD users with permission to write to an account can impersonate arbitrary services. (CVE-2022-0336)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://www.samba.org/samba/history/security.html");
  script_set_attribute(attribute:"see_also", value:"https://www.samba.org/samba/security/CVE-2021-44141.html");
  script_set_attribute(attribute:"see_also", value:"https://www.samba.org/samba/security/CVE-2021-44142.html");
  script_set_attribute(attribute:"see_also", value:"https://www.samba.org/samba/security/CVE-2022-0336.html");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Samba version 4.13.17, 4.14.12, or 4.15.5 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-44142");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2022/01/31");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/01/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/02/03");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:samba:samba");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("smb_nativelanman.nasl");
  script_require_keys("SMB/NativeLanManager", "SMB/samba");

  exit(0);
}

include('vcf.inc');
include('vcf_extras.inc');

var app_info = vcf::samba::get_app_info();

vcf::check_granularity(app_info:app_info, sig_segments:3);

var constraints = [
  {'min_version':'4.0.0',  'fixed_version':'4.13.17'},
  {'min_version':'4.14.0',  'fixed_version':'4.14.12'},
  {'min_version':'4.15.0',  'fixed_version':'4.15.5'}
];

vcf::check_version_and_report(app_info: app_info, constraints: constraints, severity: SECURITY_HOLE);

The latest version of this script can be found in these locations depending on your platform:

Linux / Unix:
/opt/nessus/lib/nessus/plugins/samba_4_15_5.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\samba_4_15_5.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/samba_4_15_5.nasl

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How to Run

Here is how to run the Samba 4.13.x < 4.13.17 / 4.14.x < 4.14.12 / 4.15.x < 4.15.5 Multiple Vulnerabilities as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

Click to start a New Scan.
Select Advanced Scan.
Navigate to the Plugins tab.
On the top right corner click to Disable All plugins.
On the left side table select Misc. plugin family.
On the right side table select Samba 4.13.x < 4.13.17 / 4.14.x < 4.14.12 / 4.15.x < 4.15.5 Multiple Vulnerabilities plugin ID 157360.
Specify the target on the Settings tab and click to Save the scan.
Run the scan.

Here are a few examples of how to run the plugin in the command line. Note that the examples below demonstrate the usage on the Linux / Unix platform.

Basic usage:

/opt/nessus/bin/nasl samba_4_15_5.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a samba_4_15_5.nasl -t <IP/HOST>

Run the plugin with trace script execution written to the console (useful for debugging):

/opt/nessus/bin/nasl -T - samba_4_15_5.nasl -t <IP/HOST>

Run the plugin with using a state file for the target and updating it (useful for running multiple plugins on the target):

/opt/nessus/bin/nasl -K /tmp/state samba_4_15_5.nasl -t <IP/HOST>

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References

IAVA | Information Assurance Vulnerability Alert:

2022-A-0054

See also:

Similar and related Nessus plugins:

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130628 - Samba 4.5.x / 4.6.x / 4.7.x / 4.8.x / 4.9.x < 4.9.15 / 4.10.x < 4.10.10 / 4.11.x < 4.11.2 Password Complexity Check Bypass (CVE-2019-14833)
130629 - Samba 4.x < 4.9.15 / 4.10.x < 4.10.10 AD DC LDAP Server Denial of Service (CVE-2019-14847)
25216 - Samba NDR MS-RPC Request Heap-Based Remote Buffer Overflow
58662 - Samba 3.x < 3.6.4 / 3.5.14 / 3.4.16 RPC Multiple Buffer Overflows
44406 - Samba Symlink Traversal Arbitrary File Access (unsafe check)
90509 - Samba Badlock Vulnerability
11398 - Samba < 2.2.8 Multiple Vulnerabilities
11442 - Samba TNG < 0.3.1 Multiple Remote Vulnerabilities
11523 - Samba < 2.2.8a / 3.0.0 Multiple Remote Overflows
11168 - Samba Encrypted Password String Conversion Decryption Overflow

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file samba_4_15_5.nasl version 1.4. For more plugins, visit the Nessus Plugin Library.

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Samba 4.13.x < 4.13.17 / 4.14.x < 4.14.12 / 4.15.x < 4.15.5 Multiple Vulnerabilities - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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