FreeBSD : FreeBSD-kernel -- Multiple WiFi issues (8d20bd48-a4f3-11ec-90de-1c697aa5a594) - Nessus

Medium Plugin ID: 158985

This page contains detailed information about the FreeBSD : FreeBSD-kernel -- Multiple WiFi issues (8d20bd48-a4f3-11ec-90de-1c697aa5a594) 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: 158985
Name: FreeBSD : FreeBSD-kernel -- Multiple WiFi issues (8d20bd48-a4f3-11ec-90de-1c697aa5a594)
Filename: freebsd_pkg_8d20bd48a4f311ec90de1c697aa5a594.nasl
Vulnerability Published: 2021-05-11
This Plugin Published: 2022-03-16
Last Modification Time: 2022-03-16
Plugin Version: 1.2
Plugin Type: local
Plugin Family: FreeBSD Local Security Checks
Dependencies: ssh_get_info.nasl
Required KB Items [?]: Host/FreeBSD/pkg_info, Host/FreeBSD/release, Host/local_checks_enabled

Vulnerability Information

Severity: Medium
Vulnerability Published: 2021-05-11
Patch Published: 2022-03-16
CVE [?]: CVE-2020-24588, CVE-2020-26144, CVE-2020-26147
CPE [?]: cpe:/o:freebsd:freebsd, p-cpe:/a:freebsd:freebsd:FreeBSD-kernel

Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the 8d20bd48-a4f3-11ec-90de-1c697aa5a594 advisory.

- The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that the A-MSDU flag in the plaintext QoS header field is authenticated. Against devices that support receiving non-SSP A-MSDU frames (which is mandatory as part of 802.11n), an adversary can abuse this to inject arbitrary network packets. (CVE-2020-24588)

- An issue was discovered on Samsung Galaxy S3 i9305 4.4.4 devices. The WEP, WPA, WPA2, and WPA3 implementations accept plaintext A-MSDU frames as long as the first 8 bytes correspond to a valid RFC1042 (i.e., LLC/SNAP) header for EAPOL. An adversary can abuse this to inject arbitrary network packets independent of the network configuration. (CVE-2020-26144)

- An issue was discovered in the Linux kernel 5.8.9. The WEP, WPA, WPA2, and WPA3 implementations reassemble fragments even though some of them were sent in plaintext. This vulnerability can be abused to inject packets and/or exfiltrate selected fragments when another device sends fragmented frames and the WEP, CCMP, or GCMP data-confidentiality protocol is used. (CVE-2020-26147)

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

Solution

Update the affected packages.

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 FreeBSD : FreeBSD-kernel -- Multiple WiFi issues (8d20bd48-a4f3-11ec-90de-1c697aa5a594) vulnerability:

GitHub: https://github.com/vanhoefm/fragattacks
[CVE-2020-24588]
GitHub: https://github.com/vanhoefm/fragattacks
[CVE-2020-26144]
GitHub: https://github.com/vanhoefm/fragattacks
[CVE-2020-26147]

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-2020-26144
CVSS V2 Vector: AV:A/AC:L/Au:N/C:N/I:P/A:N/E:U/RL:OF/RC:C

CVSS Base Score:	3.3 (Low)
Impact Subscore:	2.9
Exploitability Subscore:	6.5
CVSS Temporal Score:	2.4 (Low)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	2.4 (Low)

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

CVSS Base Score:	6.5 (Medium)
Impact Subscore:	3.6
Exploitability Subscore:	2.8
CVSS Temporal Score:	5.7 (Medium)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	5.7 (Medium)

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

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Plugin Source

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# @NOAGENT@
#
# The descriptive text and package checks in this plugin were
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2021 Jacques Vidrine and contributors
#
# Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
# HTML, PDF, PostScript, RTF and so forth) with or without modification,
# are permitted provided that the following conditions are met:
# 1. Redistributions of source code (VuXML) must retain the above
#    copyright notice, this list of conditions and the following
#    disclaimer as the first lines of this file unmodified.
# 2. Redistributions in compiled form (transformed to other DTDs,
#    published online in any format, converted to PDF, PostScript,
#    RTF and other formats) must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer
#    in the documentation and/or other materials provided with the
#    distribution.
#
# THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
# OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

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

if (description)
{
  script_id(158985);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/03/16");

  script_cve_id("CVE-2020-24588", "CVE-2020-26144", "CVE-2020-26147");
  script_xref(name:"IAVA", value:"2021-A-0223-S");
  script_xref(name:"IAVA", value:"2021-A-0222-S");

  script_name(english:"FreeBSD : FreeBSD-kernel -- Multiple WiFi issues (8d20bd48-a4f3-11ec-90de-1c697aa5a594)");

  script_set_attribute(attribute:"synopsis", value:
"The remote FreeBSD host is missing one or more security-related updates.");
  script_set_attribute(attribute:"description", value:
"The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple
vulnerabilities as referenced in the 8d20bd48-a4f3-11ec-90de-1c697aa5a594 advisory.

  - The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent
    Privacy (WEP) doesn't require that the A-MSDU flag in the plaintext QoS header field is authenticated.
    Against devices that support receiving non-SSP A-MSDU frames (which is mandatory as part of 802.11n), an
    adversary can abuse this to inject arbitrary network packets. (CVE-2020-24588)

  - An issue was discovered on Samsung Galaxy S3 i9305 4.4.4 devices. The WEP, WPA, WPA2, and WPA3
    implementations accept plaintext A-MSDU frames as long as the first 8 bytes correspond to a valid RFC1042
    (i.e., LLC/SNAP) header for EAPOL. An adversary can abuse this to inject arbitrary network packets
    independent of the network configuration. (CVE-2020-26144)

  - An issue was discovered in the Linux kernel 5.8.9. The WEP, WPA, WPA2, and WPA3 implementations reassemble
    fragments even though some of them were sent in plaintext. This vulnerability can be abused to inject
    packets and/or exfiltrate selected fragments when another device sends fragmented frames and the WEP,
    CCMP, or GCMP data-confidentiality protocol is used. (CVE-2020-26147)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://vuxml.freebsd.org/freebsd/8d20bd48-a4f3-11ec-90de-1c697aa5a594.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?315ff327");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:N/C:N/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-26144");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/05/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/03/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/03/16");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:FreeBSD-kernel");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"FreeBSD Local Security Checks");

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

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info");

  exit(0);
}


include("audit.inc");
include("freebsd_package.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);

if (report_paranoia < 2) audit(AUDIT_PARANOID);

var flag = 0;

var packages = [
    'FreeBSD>=12.2<12.2_14',
    'FreeBSD>=12.3<12.3_3',
    'FreeBSD>=13.0<13.0_8'
];

foreach var package( packages ) {
    if (pkg_test(save_report:TRUE, pkg: package)) flag++;
}

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_NOTE,
    extra      : pkg_report_get()
  );
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

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

Linux / Unix:
/opt/nessus/lib/nessus/plugins/freebsd_pkg_8d20bd48a4f311ec90de1c697aa5a594.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\freebsd_pkg_8d20bd48a4f311ec90de1c697aa5a594.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/freebsd_pkg_8d20bd48a4f311ec90de1c697aa5a594.nasl

Go back to menu.

How to Run

Here is how to run the FreeBSD : FreeBSD-kernel -- Multiple WiFi issues (8d20bd48-a4f3-11ec-90de-1c697aa5a594) 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 FreeBSD Local Security Checks plugin family.
On the right side table select FreeBSD : FreeBSD-kernel -- Multiple WiFi issues (8d20bd48-a4f3-11ec-90de-1c697aa5a594) plugin ID 158985.
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 freebsd_pkg_8d20bd48a4f311ec90de1c697aa5a594.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a freebsd_pkg_8d20bd48a4f311ec90de1c697aa5a594.nasl -t <IP/HOST>

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

/opt/nessus/bin/nasl -T - freebsd_pkg_8d20bd48a4f311ec90de1c697aa5a594.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 freebsd_pkg_8d20bd48a4f311ec90de1c697aa5a594.nasl -t <IP/HOST>

Go back to menu.

References

IAVA | Information Assurance Vulnerability Alert:

2021-A-0222-S, 2021-A-0223-S

See also:

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Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file freebsd_pkg_8d20bd48a4f311ec90de1c697aa5a594.nasl version 1.2. For more plugins, visit the Nessus Plugin Library.

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FreeBSD : FreeBSD-kernel -- Multiple WiFi issues (8d20bd48-a4f3-11ec-90de-1c697aa5a594) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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