macOS 10.15.x < 10.15.7 Security Update 2021-002 Catalina (HT212326) - Nessus

Critical Plugin ID: 149042

This page contains detailed information about the macOS 10.15.x < 10.15.7 Security Update 2021-002 Catalina (HT212326) 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: 149042
Name: macOS 10.15.x < 10.15.7 Security Update 2021-002 Catalina (HT212326)
Filename: macos_HT212326.nasl
Vulnerability Published: 2021-04-26
This Plugin Published: 2021-04-28
Last Modification Time: 2022-01-21
Plugin Version: 1.10
Plugin Type: local
Plugin Family: MacOS X Local Security Checks
Dependencies: ssh_get_info.nasl

Vulnerability Information

Severity: Critical
Vulnerability Published: 2021-04-26
Patch Published: 2021-04-26
CVE [?]: CVE-2020-3838, CVE-2020-8037, CVE-2020-8285, CVE-2020-8286, CVE-2020-27942, CVE-2021-1739, CVE-2021-1740, CVE-2021-1784, CVE-2021-1797, CVE-2021-1808, CVE-2021-1809, CVE-2021-1810, CVE-2021-1811, CVE-2021-1813, CVE-2021-1824, CVE-2021-1828, CVE-2021-1834, CVE-2021-1839, CVE-2021-1840, CVE-2021-1843, CVE-2021-1847, CVE-2021-1851, CVE-2021-1857, CVE-2021-1860, CVE-2021-1868, CVE-2021-1873, CVE-2021-1875, CVE-2021-1876, CVE-2021-1878, CVE-2021-1881, CVE-2021-1882, CVE-2021-30652, CVE-2021-30657
CPE [?]: cpe:/o:apple:macos, cpe:/o:apple:mac_os_x

Synopsis

The remote host is missing a macOS security update.

Description

The remote host is running a version of macOS / Mac OS X that is 10.15.x prior to 10.15.7 Security Update 2021-002 Catalina It is, therefore, affected by multiple vulnerabilities, including the following:

- An application may be able to execute arbitrary code with system privileges due to insufficient permission checks (CVE-2020-3838).

- A memory corruption vulnerability could allow an application read access to restricted memory (CVE-2021-1808).

- A memory corruption vulnerability could allow an application to cause unexpected system termination or to write kernel memory (CVE-2021-1828).

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

Solution

Upgrade to macOS 10.15.7 Security Update 2021-002 Catalina or later.

Public Exploits

Target Network Port(s): N/A
Target Asset(s): Host/local_checks_enabled, Host/MacOSX/packages/boms, Host/MacOSX/Version
Exploit Available: True (Metasploit Framework, GitHub)
Exploit Ease: Exploits are available

Here's the list of publicly known exploits and PoCs for verifying the macOS 10.15.x < 10.15.7 Security Update 2021-002 Catalina (HT212326) vulnerability:

Metasploit: exploit/osx/browser/osx_gatekeeper_bypass
[macOS Gatekeeper check bypass]
GitHub: https://github.com/artsking/curl-7.64.1_CVE-2020-8285_WithPatch
[CVE-2020-8285]
GitHub: https://github.com/YaleSpinup/ecr-api
[CVE-2020-8286]
GitHub: https://github.com/artsking/curl-7.64.1_CVE-2020-8286_WithPatch
[CVE-2020-8286]
GitHub: https://github.com/salrashid123/envoy_mtls
[CVE-2020-8286]
GitHub: https://github.com/AlAIAL90/CVE-2020-27942
[CVE-2020-27942: PoC for exploiting CVE-2020-27942 : A logic issue was addressed with improved state ...]
GitHub: https://github.com/houjingyi233/macOS-iOS-system-security
[CVE-2021-1740]
GitHub: https://github.com/AlAIAL90/CVE-2021-1810
[CVE-2021-1810: PoC for exploiting CVE-2021-1810 : A logic issue was addressed with improved state ...]
GitHub: https://github.com/fardeen-ahmed/Bug-bounty-Writeups
[CVE-2021-1810]
GitHub: https://github.com/AlAIAL90/CVE-2021-1881
[CVE-2021-1881: PoC for exploiting CVE-2021-1881 : An out-of-bounds read was addressed with improved ...]
GitHub: https://github.com/Peterpan0927/pocs
[CVE-2021-1882]
GitHub: https://github.com/cedowens/Swift-Attack
[CVE-2021-30657]
GitHub: https://github.com/houjingyi233/macOS-iOS-system-security
[CVE-2021-30657]
GitHub: https://github.com/joydo/CVE-Writeups
[CVE-2021-30657]
GitHub: https://github.com/shubham0d/CVE-2021-30657
[CVE-2021-30657: A sample POC for CVE-2021-30657 affecting MacOS]

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-2021-1834
CVSS V2 Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C/E:H/RL:OF/RC:C

CVSS Base Score:	10.0 (High)
Impact Subscore:	10.0
Exploitability Subscore:	10.0
CVSS Temporal Score:	8.7 (High)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	8.7 (High)

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

CVSS Base Score:	9.8 (Critical)
Impact Subscore:	5.9
Exploitability Subscore:	3.9
CVSS Temporal Score:	9.4 (Critical)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	9.4 (Critical)

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

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Plugin Source

##
# (C) Tenable Network Security, Inc.
##

include('compat.inc');

if (description)
{
  script_id(149042);
  script_version("1.10");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/01/21");

  script_cve_id(
    "CVE-2020-3838",
    "CVE-2020-8037",
    "CVE-2020-8285",
    "CVE-2020-8286",
    "CVE-2020-27942",
    "CVE-2021-1739",
    "CVE-2021-1740",
    "CVE-2021-1784",
    "CVE-2021-1797",
    "CVE-2021-1808",
    "CVE-2021-1809",
    "CVE-2021-1810",
    "CVE-2021-1811",
    "CVE-2021-1813",
    "CVE-2021-1824",
    "CVE-2021-1828",
    "CVE-2021-1834",
    "CVE-2021-1839",
    "CVE-2021-1840",
    "CVE-2021-1843",
    "CVE-2021-1847",
    "CVE-2021-1851",
    "CVE-2021-1857",
    "CVE-2021-1860",
    "CVE-2021-1868",
    "CVE-2021-1873",
    "CVE-2021-1875",
    "CVE-2021-1876",
    "CVE-2021-1878",
    "CVE-2021-1881",
    "CVE-2021-1882",
    "CVE-2021-30652",
    "CVE-2021-30657"
  );
  script_xref(name:"APPLE-SA", value:"HT212326");
  script_xref(name:"APPLE-SA", value:"APPLE-SA-2021-04-26-3");
  script_xref(name:"IAVA", value:"2021-A-0202-S");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2021/11/17");

  script_name(english:"macOS 10.15.x < 10.15.7 Security Update 2021-002 Catalina (HT212326)");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is missing a macOS security update.");
  script_set_attribute(attribute:"description", value:
"The remote host is running a version of macOS / Mac OS X that is 10.15.x prior to 10.15.7 Security Update 2021-002 Catalina
It is, therefore, affected by multiple vulnerabilities, including the following:

  - An application may be able to execute arbitrary code with system privileges due to insufficient permission
    checks (CVE-2020-3838).

  - A memory corruption vulnerability could allow an application read access to restricted memory (CVE-2021-1808).

  - A memory corruption vulnerability could allow an application to cause unexpected system termination or to 
    write kernel memory (CVE-2021-1828).

Note that Nessus has not tested for this issue but has instead relied only on the operating system's self-reported
version number.");
  script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-us/HT212326");
  script_set_attribute(attribute:"solution", value:
"Upgrade to macOS 10.15.7 Security Update 2021-002 Catalina or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-1834");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'macOS Gatekeeper check bypass');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/04/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/04/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/04/28");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:apple:mac_os_x");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:apple:macos");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2021-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_ports("Host/MacOSX/Version", "Host/local_checks_enabled", "Host/MacOSX/packages/boms");

  exit(0);
}

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

app_info = vcf::apple::macos::get_app_info();

constraints = [
  { 
    'max_version' : '10.15.7', 
    'min_version' : '10.15', 
    'fixed_build': '19H1030', 
    'fixed_display' : '10.15.7 Security Update 2021-002 Catalina' 
  }
];

vcf::apple::macos::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/macos_HT212326.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\macos_HT212326.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/macos_HT212326.nasl

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How to Run

Here is how to run the macOS 10.15.x < 10.15.7 Security Update 2021-002 Catalina (HT212326) 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 MacOS X Local Security Checks plugin family.
On the right side table select macOS 10.15.x < 10.15.7 Security Update 2021-002 Catalina (HT212326) plugin ID 149042.
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 macos_HT212326.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a macos_HT212326.nasl -t <IP/HOST>

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

/opt/nessus/bin/nasl -T - macos_HT212326.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 macos_HT212326.nasl -t <IP/HOST>

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References

IAVA | Information Assurance Vulnerability Alert:

2021-A-0202-S

APPLE-SA | Apple Security Advisory:

HT212326, 2021-04-26-3

See also:

Similar and related Nessus plugins:

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144670 - EulerOS 2.0 SP9 : curl (EulerOS-SA-2021-1003)
145210 - EulerOS 2.0 SP3 : curl (EulerOS-SA-2021-1063)
145279 - openSUSE Security Update : curl (openSUSE-2020-2249)
145548 - Apple iOS < 14.4 Multiple Vulnerabilities
145754 - EulerOS 2.0 SP8 : curl (EulerOS-SA-2021-1137)
146086 - macOS 10.14.x < 10.14.6 Security Update 2021-001 / 10.15.x < 10.15.7 Security Update 2021-001 / macOS 11.x < 11.2 (HT212147)
146647 - EulerOS 2.0 SP2 : curl (EulerOS-SA-2021-1287)
147112 - EulerOS Virtualization for ARM 64 3.0.6.0 : curl (EulerOS-SA-2021-1548)
147470 - EulerOS Virtualization 2.9.1 : curl (EulerOS-SA-2021-1596)
147531 - EulerOS Virtualization 3.0.2.6 : curl (EulerOS-SA-2021-1410)
147561 - EulerOS Virtualization 3.0.6.6 : curl (EulerOS-SA-2021-1466)
147600 - EulerOS Virtualization for ARM 64 3.0.2.0 : curl (EulerOS-SA-2021-1399)
147702 - EulerOS Virtualization 2.9.0 : curl (EulerOS-SA-2021-1645)
148043 - EulerOS 2.0 SP5 : curl (EulerOS-SA-2021-1672)
148277 - Debian DSA-4881-1 : curl - security update
149041 - macOS 11.x < 11.3 (HT212325)
149043 - macOS 10.14.x < 10.14.6 Security Update 2021-003 Mojave (HT212327)
149061 - Apple iOS < 14.5 Multiple Vulnerabilities (HT212317)
149676 - RHEL 8 : curl (RHSA-2021:1610)
149767 - CentOS 8 : curl (CESA-2021:1610)
149932 - Oracle Linux 8 : curl (ELSA-2021-1610)
150083 - SUSE SLES12 Security Update : curl (SUSE-SU-2021:1786-1)
150636 - SUSE SLES11 Security Update : curl (SUSE-SU-2020:14585-1)
150852 - RHEL 7 / 8 : Red Hat JBoss Core Services Apache HTTP Server 2.4.37 SP8 (RHSA-2021:2472)
151421 - EulerOS Virtualization 3.0.2.2 : curl (EulerOS-SA-2021-2132)
151626 - Juniper Junos OS Multiple Vulnerabilities (JSA11207)
152237 - Amazon Linux 2 : curl (ALAS-2021-1693)
154679 - F5 Networks BIG-IP : cURL vulnerability (K15402727)
154693 - F5 Networks BIG-IP : cURL vulnerability (K61186963)
157525 - AlmaLinux 8 : curl (ALSA-2021:1610)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file macos_HT212326.nasl version 1.10. For more plugins, visit the Nessus Plugin Library.

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macOS 10.15.x < 10.15.7 Security Update 2021-002 Catalina (HT212326) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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