Ubuntu 20.04 LTS : Linux kernel (GKE) vulnerabilities (USN-5297-1) - Nessus

High Plugin ID: 158250

This page contains detailed information about the Ubuntu 20.04 LTS : Linux kernel (GKE) vulnerabilities (USN-5297-1) 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: 158250
Name: Ubuntu 20.04 LTS : Linux kernel (GKE) vulnerabilities (USN-5297-1)
Filename: ubuntu_USN-5297-1.nasl
Vulnerability Published: 2021-01-11
This Plugin Published: 2022-02-22
Last Modification Time: 2022-04-26
Plugin Version: 1.7
Plugin Type: local
Plugin Family: Ubuntu Local Security Checks
Dependencies: linux_alt_patch_detect.nasl, ssh_get_info.nasl
Required KB Items [?]: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Vulnerability Information

Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5297-1 advisory.

- A read-after-free memory flaw was found in the Linux kernel's garbage collection for Unix domain socket file handlers in the way users call close() and fget() simultaneously and can potentially trigger a race condition. This flaw allows a local user to crash the system or escalate their privileges on the system. This flaw affects Linux kernel versions prior to 5.16-rc4. (CVE-2021-4083)

- A use-after-free flaw was found in nci_request in net/nfc/nci/core.c in NFC Controller Interface (NCI) in the Linux kernel. This flaw could allow a local attacker with user privileges to cause a data race problem while the device is getting removed, leading to a privilege escalation problem. (CVE-2021-4202)

- In various setup methods of the USB gadget subsystem, there is a possible out of bounds write due to an incorrect flag check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-210292376References: Upstream kernel (CVE-2021-39685)

- In the Linux kernel through 5.15.2, hw_atl_utils_fw_rpc_wait in drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c allows an attacker (who can introduce a crafted device) to trigger an out-of-bounds write via a crafted length value. (CVE-2021-43975)

- A random memory access flaw was found in the Linux kernel's GPU i915 kernel driver functionality in the way a user may run malicious code on the GPU. This flaw allows a local user to crash the system or escalate their privileges on the system. (CVE-2022-0330)

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 are available

Here's the list of publicly known exploits and PoCs for verifying the Ubuntu 20.04 LTS : Linux kernel (GKE) vulnerabilities (USN-5297-1) vulnerability:

GitHub: https://github.com/szymonh/inspector-gadget
[CVE-2021-39685: CVE-2021-39685 Description and sample exploit for Linux USB Gadget overflow ...]
GitHub: https://github.com/szymonh/szymonh
[CVE-2021-39685]

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-2021-39685
CVSS V2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:OF/RC:C

CVSS Base Score:	7.2 (High)
Impact Subscore:	10.0
Exploitability Subscore:	3.9
CVSS Temporal Score:	5.6 (Medium)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	5.6 (Medium)

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

CVSS Base Score:	7.8 (High)
Impact Subscore:	5.9
Exploitability Subscore:	1.8
CVSS Temporal Score:	7.0 (High)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	7.0 (High)

Go back to menu.

Plugin Source

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-5297-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##

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

if (description)
{
  script_id(158250);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/26");

  script_cve_id(
    "CVE-2021-4083",
    "CVE-2021-4155",
    "CVE-2021-4202",
    "CVE-2021-39685",
    "CVE-2021-43975",
    "CVE-2022-0330",
    "CVE-2022-22942"
  );
  script_xref(name:"USN", value:"5297-1");

  script_name(english:"Ubuntu 20.04 LTS : Linux kernel (GKE) vulnerabilities (USN-5297-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Ubuntu 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in
the USN-5297-1 advisory.

  - A read-after-free memory flaw was found in the Linux kernel's garbage collection for Unix domain socket
    file handlers in the way users call close() and fget() simultaneously and can potentially trigger a race
    condition. This flaw allows a local user to crash the system or escalate their privileges on the system.
    This flaw affects Linux kernel versions prior to 5.16-rc4. (CVE-2021-4083)

  - A use-after-free flaw was found in nci_request in net/nfc/nci/core.c in NFC Controller Interface (NCI) in
    the Linux kernel. This flaw could allow a local attacker with user privileges to cause a data race problem
    while the device is getting removed, leading to a privilege escalation problem. (CVE-2021-4202)

  - In various setup methods of the USB gadget subsystem, there is a possible out of bounds write due to an
    incorrect flag check. This could lead to local escalation of privilege with no additional execution
    privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android
    kernelAndroid ID: A-210292376References: Upstream kernel (CVE-2021-39685)

  - In the Linux kernel through 5.15.2, hw_atl_utils_fw_rpc_wait in
    drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c allows an attacker (who can introduce a
    crafted device) to trigger an out-of-bounds write via a crafted length value. (CVE-2021-43975)

  - A random memory access flaw was found in the Linux kernel's GPU i915 kernel driver functionality in the
    way a user may run malicious code on the GPU. This flaw allows a local user to crash the system or
    escalate their privileges on the system. (CVE-2022-0330)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/notices/USN-5297-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-39685");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/01/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/02/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/02/22");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-buildinfo-5.4.0-1063-gke");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-gke");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-gke-5.4");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-gke-headers-5.4.0-1063");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-gke-tools-5.4.0-1063");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-headers-5.4.0-1063-gke");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-headers-gke");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-headers-gke-5.4");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1063-gke");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-gke");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-gke-5.4");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-unsigned-5.4.0-1063-gke");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-modules-5.4.0-1063-gke");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-modules-extra-5.4.0-1063-gke");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-modules-extra-gke");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-modules-extra-gke-5.4");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-tools-5.4.0-1063-gke");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-tools-gke");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-tools-gke-5.4");
  script_end_attributes();

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

  script_copyright(english:"Ubuntu Security Notice (C) 2022 Canonical, Inc. / NASL script (C) 2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}

include('audit.inc');
include('ubuntu.inc');
include('ksplice.inc');

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

var 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);

if (get_one_kb_item('Host/ksplice/kernel-cves'))
{
  rm_kb_item(name:'Host/uptrack-uname-r');
  var cve_list = make_list('CVE-2021-4083', 'CVE-2021-4155', 'CVE-2021-4202', 'CVE-2021-39685', 'CVE-2021-43975', 'CVE-2022-0330', 'CVE-2022-22942');
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for USN-5297-1');
  }
  else
  {
    _ubuntu_report = ksplice_reporting_text();
  }
}

var pkgs = [
    {'osver': '20.04', 'pkgname': 'linux-buildinfo-5.4.0-1063-gke', 'pkgver': '5.4.0-1063.66'},
    {'osver': '20.04', 'pkgname': 'linux-gke', 'pkgver': '5.4.0.1063.73'},
    {'osver': '20.04', 'pkgname': 'linux-gke-5.4', 'pkgver': '5.4.0.1063.73'},
    {'osver': '20.04', 'pkgname': 'linux-gke-headers-5.4.0-1063', 'pkgver': '5.4.0-1063.66'},
    {'osver': '20.04', 'pkgname': 'linux-gke-tools-5.4.0-1063', 'pkgver': '5.4.0-1063.66'},
    {'osver': '20.04', 'pkgname': 'linux-headers-5.4.0-1063-gke', 'pkgver': '5.4.0-1063.66'},
    {'osver': '20.04', 'pkgname': 'linux-headers-gke', 'pkgver': '5.4.0.1063.73'},
    {'osver': '20.04', 'pkgname': 'linux-headers-gke-5.4', 'pkgver': '5.4.0.1063.73'},
    {'osver': '20.04', 'pkgname': 'linux-image-5.4.0-1063-gke', 'pkgver': '5.4.0-1063.66'},
    {'osver': '20.04', 'pkgname': 'linux-image-gke', 'pkgver': '5.4.0.1063.73'},
    {'osver': '20.04', 'pkgname': 'linux-image-gke-5.4', 'pkgver': '5.4.0.1063.73'},
    {'osver': '20.04', 'pkgname': 'linux-image-unsigned-5.4.0-1063-gke', 'pkgver': '5.4.0-1063.66'},
    {'osver': '20.04', 'pkgname': 'linux-modules-5.4.0-1063-gke', 'pkgver': '5.4.0-1063.66'},
    {'osver': '20.04', 'pkgname': 'linux-modules-extra-5.4.0-1063-gke', 'pkgver': '5.4.0-1063.66'},
    {'osver': '20.04', 'pkgname': 'linux-modules-extra-gke', 'pkgver': '5.4.0.1063.73'},
    {'osver': '20.04', 'pkgname': 'linux-modules-extra-gke-5.4', 'pkgver': '5.4.0.1063.73'},
    {'osver': '20.04', 'pkgname': 'linux-tools-5.4.0-1063-gke', 'pkgver': '5.4.0-1063.66'},
    {'osver': '20.04', 'pkgname': 'linux-tools-gke', 'pkgver': '5.4.0.1063.73'},
    {'osver': '20.04', 'pkgname': 'linux-tools-gke-5.4', 'pkgver': '5.4.0.1063.73'}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var osver = NULL;
  var pkgname = NULL;
  var pkgver = NULL;
  if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
  if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
  if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
  if (osver && pkgname && pkgver) {
    if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) flag++;
  }
}

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  var tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'linux-buildinfo-5.4.0-1063-gke / linux-gke / linux-gke-5.4 / etc');
}

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-5297-1.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\ubuntu_USN-5297-1.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/ubuntu_USN-5297-1.nasl

Go back to menu.

How to Run

Here is how to run the Ubuntu 20.04 LTS : Linux kernel (GKE) vulnerabilities (USN-5297-1) 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 20.04 LTS : Linux kernel (GKE) vulnerabilities (USN-5297-1) plugin ID 158250.
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-5297-1.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a ubuntu_USN-5297-1.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-5297-1.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-5297-1.nasl -t <IP/HOST>

Go back to menu.

References

USN | Ubuntu Security Notice:

5297-1

See also:

Similar and related Nessus plugins:

157900 - SUSE SLES12 Security Update : kernel (SUSE-SU-2022:0362-1)
157929 - SUSE SLES12 Security Update : kernel (SUSE-SU-2022:0372-1)
157932 - SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2022:0370-1)
157938 - openSUSE 15 Security Update : kernel (openSUSE-SU-2022:0370-1)
157939 - SUSE SLES12 Security Update : kernel (SUSE-SU-2022:0371-1)
158076 - RHEL 8 : Red Hat Virtualization Host security update [ovirt-4.4.10-1] (Important) (RHSA-2022:0540)
158100 - Oracle Linux 7 / 8 : Unbreakable Enterprise kernel-container (ELSA-2022-9148)
158107 - Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2022-9147)
158123 - SUSE SLES12 / SLES15 Security Update : kernel (Live Patch 0 for SLE 15 SP3) (SUSE-SU-2022:0418-1)
158124 - SUSE SLES15 Security Update : kernel (Live Patch 11 for SLE 15 SP3) (SUSE-SU-2022:0436-1)
158127 - OracleVM 3.4 : kernel-uek (OVMSA-2022-0007)
158141 - SUSE SLES15 Security Update : kernel (Live Patch 1 for SLE 15 SP3) (SUSE-SU-2022:0463-1)
158152 - SUSE SLES12 Security Update : kernel (SUSE-SU-2022:0477-1)
158159 - Ubuntu 20.04 LTS : Linux kernel vulnerabilities (USN-5294-1)
158225 - SUSE SLES15 Security Update : the Linux RT Kernel (SUSE-SU-2022:0543-1)
158248 - RHEL 8 : kpatch-patch (RHSA-2022:0590)
158249 - Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-5298-1)
158253 - Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-5294-2)
158260 - RHEL 7 : kpatch-patch (RHSA-2022:0592)
158264 - RHEL 7 : kernel-rt (RHSA-2022:0622)
158266 - RHEL 7 : kernel (RHSA-2022:0620)
158268 - Oracle Linux 7 : kernel (ELSA-2022-0620)
158323 - RHEL 8 : kernel-rt (RHSA-2022:0629)
158330 - Scientific Linux Security Update : kernel on SL7.x x86_64 (2022:0620)
158337 - SUSE SLES12 Security Update : the Linux RT Kernel (SUSE-SU-2022:0555-1)
158347 - RHEL 8 : kernel (RHSA-2022:0636)
158387 - EulerOS 2.0 SP10 : kernel (EulerOS-SA-2022-1255)
158416 - EulerOS 2.0 SP10 : kernel (EulerOS-SA-2022-1243)
158438 - CentOS 7 : kernel (CESA-2022:0620)
158472 - EulerOS 2.0 SP5 : kernel (EulerOS-SA-2022-1271)
158524 - EulerOS 2.0 SP9 : kernel (EulerOS-SA-2022-1292)
158543 - EulerOS 2.0 SP9 : kernel (EulerOS-SA-2022-1308)
158682 - Debian DSA-5092-1 : linux - security update
158697 - Amazon Linux AMI : kernel (ALAS-2022-1571)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file ubuntu_USN-5297-1.nasl version 1.7. For more plugins, visit the Nessus Plugin Library.

Go back to menu.

Ubuntu 20.04 LTS : Linux kernel (GKE) vulnerabilities (USN-5297-1) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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