Ubuntu 18.04 LTS / 19.10 / 20.04 : WebKitGTK+ vulnerabilities (USN-4422-1) - Nessus

Critical Plugin ID: 138497

This page contains detailed information about the Ubuntu 18.04 LTS / 19.10 / 20.04 : WebKitGTK+ vulnerabilities (USN-4422-1) 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: 138497
Name: Ubuntu 18.04 LTS / 19.10 / 20.04 : WebKitGTK+ vulnerabilities (USN-4422-1)
Filename: ubuntu_USN-4422-1.nasl
Vulnerability Published: 2020-06-09
This Plugin Published: 2020-07-15
Last Modification Time: 2021-06-03
Plugin Version: 1.7
Plugin Type: local
Plugin Family: Ubuntu Local Security Checks
Dependencies: ssh_get_info.nasl
Required KB Items [?]: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Vulnerability Information

Severity: Critical
Vulnerability Published: 2020-06-09
Patch Published: 2020-07-14
CVE [?]: CVE-2020-9802, CVE-2020-9803, CVE-2020-9805, CVE-2020-9806, CVE-2020-9807, CVE-2020-9843, CVE-2020-9850, CVE-2020-13753
CPE [?]: cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:19.10, cpe:/o:canonical:ubuntu_linux:20.04, p-cpe:/a:canonical:ubuntu_linux:libjavascriptcoregtk-4.0-18, p-cpe:/a:canonical:ubuntu_linux:libwebkit2gtk-4.0-37
Exploited by Malware: True

Synopsis

The remote Ubuntu host is missing one or more security-related patches.

Description

A large number of security issues were discovered in the WebKitGTK Web and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could exploit a variety of issues related to web browser security, including cross-site scripting attacks, denial of service attacks, and arbitrary code execution.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected libjavascriptcoregtk-4.0-18 and / or libwebkit2gtk-4.0-37 packages.

Public Exploits

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

Here's the list of publicly known exploits and PoCs for verifying the Ubuntu 18.04 LTS / 19.10 / 20.04 : WebKitGTK+ vulnerabilities (USN-4422-1) vulnerability:

Metasploit: exploit/osx/browser/safari_in_operator_side_effect
[Safari in Operator Side Effect Exploit]
GitHub: https://github.com/SexyBeast233/SecBooks
[CVE-2020-9802]
GitHub: https://github.com/sslab-gatech/freedom
[CVE-2020-9803]
GitHub: https://github.com/sslab-gatech/freedom
[CVE-2020-9806]
GitHub: https://github.com/sslab-gatech/freedom
[CVE-2020-9807]

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 V2 Vector [?]: AV:N/AC:L/Au:N/C:P/I:P/A:P/E:H/RL:OF/RC:C

CVSS Base Score:	7.5 (High)
Impact Subscore:	6.4
Exploitability Subscore:	10.0
CVSS Temporal Score:	6.5 (Medium)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	6.5 (Medium)

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)

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Plugin Source

This is the ubuntu_USN-4422-1.nasl nessus plugin source code. Ubuntu Security Notice (C) 2020-2021 Canonical, Inc. / NASL script (C) 2020-2021 and is owned by Tenable, Inc. or an Affiliate thereof.

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-4422-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include("compat.inc");

if (description)
{
  script_id(138497);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/06/03");

  script_cve_id("CVE-2020-13753", "CVE-2020-9802", "CVE-2020-9803", "CVE-2020-9805", "CVE-2020-9806", "CVE-2020-9807", "CVE-2020-9843", "CVE-2020-9850");
  script_xref(name:"USN", value:"4422-1");

  script_name(english:"Ubuntu 18.04 LTS / 19.10 / 20.04 : WebKitGTK+ vulnerabilities (USN-4422-1)");
  script_summary(english:"Checks dpkg output for updated packages.");

  script_set_attribute(
    attribute:"synopsis",
    value:
"The remote Ubuntu host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description",
    value:
"A large number of security issues were discovered in the WebKitGTK Web
and JavaScript engines. If a user were tricked into viewing a
malicious website, a remote attacker could exploit a variety of issues
related to web browser security, including cross-site scripting
attacks, denial of service attacks, and arbitrary code execution.

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://usn.ubuntu.com/4422-1/"
  );
  script_set_attribute(
    attribute:"solution",
    value:
"Update the affected libjavascriptcoregtk-4.0-18 and / or
libwebkit2gtk-4.0-37 packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  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:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Safari in Operator Side Effect Exploit');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libjavascriptcoregtk-4.0-18");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libwebkit2gtk-4.0-37");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:19.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/06/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/07/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/07/15");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2020-2021 Canonical, Inc. / NASL script (C) 2020-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Ubuntu Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("ubuntu.inc");
include("misc_func.inc");

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! preg(pattern:"^(18\.04|19\.10|20\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 18.04 / 19.10 / 20.04", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Ubuntu", cpu);

flag = 0;

if (ubuntu_check(osver:"18.04", pkgname:"libjavascriptcoregtk-4.0-18", pkgver:"2.28.3-0ubuntu0.18.04.1")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"libwebkit2gtk-4.0-37", pkgver:"2.28.3-0ubuntu0.18.04.1")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"libjavascriptcoregtk-4.0-18", pkgver:"2.28.3-0ubuntu0.19.10.1")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"libwebkit2gtk-4.0-37", pkgver:"2.28.3-0ubuntu0.19.10.1")) flag++;
if (ubuntu_check(osver:"20.04", pkgname:"libjavascriptcoregtk-4.0-18", pkgver:"2.28.3-0ubuntu0.20.04.1")) flag++;
if (ubuntu_check(osver:"20.04", pkgname:"libwebkit2gtk-4.0-37", pkgver:"2.28.3-0ubuntu0.20.04.1")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libjavascriptcoregtk-4.0-18 / libwebkit2gtk-4.0-37");
}

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

Linux / Unix:
/opt/nessus/lib/nessus/plugins/ubuntu_USN-4422-1.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\ubuntu_USN-4422-1.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/ubuntu_USN-4422-1.nasl

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How to Run

Here is how to run the Ubuntu 18.04 LTS / 19.10 / 20.04 : WebKitGTK+ vulnerabilities (USN-4422-1) 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 Ubuntu Local Security Checks plugin family.
On the right side table select Ubuntu 18.04 LTS / 19.10 / 20.04 : WebKitGTK+ vulnerabilities (USN-4422-1) plugin ID 138497.
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 ubuntu_USN-4422-1.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a ubuntu_USN-4422-1.nasl -t <IP/HOST>

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

/opt/nessus/bin/nasl -T - ubuntu_USN-4422-1.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 ubuntu_USN-4422-1.nasl -t <IP/HOST>

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References

USN | Ubuntu Security Notice:

4422-1

See also:

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157689 - AlmaLinux 8 : GNOME (ALSA-2020:4451)
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138644 - Debian DSA-4724-1 : webkit2gtk - security update
138408 - Fedora 32 : webkit2gtk3 (2020-ab074c6cdf)
138655 - Fedora 31 : webkit2gtk3 (2020-d2736ee493)
140680 - FreeBSD : webkit2-gtk3 -- multible vulnerabilities (efd03116-c2a9-11ea-82bc-b42e99a1b9c3)
138934 - GLSA-202007-11 : WebKitGTK+: Multiple vulnerabilities
147363 - NewStart CGSL MAIN 6.02 : webkit2gtk3 Multiple Vulnerabilities (NS-SA-2021-0059)
138988 - openSUSE Security Update : webkit2gtk3 (openSUSE-2020-1064)
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142763 - Oracle Linux 8 : GNOME (ELSA-2020-4451)
142418 - RHEL 8 : GNOME (RHSA-2020:4451)
138831 - SUSE SLED15 / SLES15 Security Update : webkit2gtk3 (SUSE-SU-2020:1990-1)
138833 - SUSE SLED15 / SLES15 Security Update : webkit2gtk3 (SUSE-SU-2020:1992-1)
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158139 - SUSE SLES15 Security Update : webkit2gtk3 (SUSE-SU-2022:0182-2)
157109 - SUSE SLES15 Security Update : webkit2gtk3 (SUSE-SU-2022:0183-1)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file ubuntu_USN-4422-1.nasl version 1.7. For more plugins, visit the Nessus Plugin Library.

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Ubuntu 18.04 LTS / 19.10 / 20.04 : WebKitGTK+ vulnerabilities (USN-4422-1) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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