Ubuntu 18.04 LTS / 20.04 LTS / 20.10 : Linux kernel vulnerabilities (USN-4917-1) - Nessus

High   Plugin ID: 148690

This page contains detailed information about the Ubuntu 18.04 LTS / 20.04 LTS / 20.10 : Linux kernel vulnerabilities (USN-4917-1) 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

ID: 148690
Name: Ubuntu 18.04 LTS / 20.04 LTS / 20.10 : Linux kernel vulnerabilities (USN-4917-1)
Filename: ubuntu_USN-4917-1.nasl
Vulnerability Published: 2021-04-08
This Plugin Published: 2021-04-16
Last Modification Time: 2022-01-21
Plugin Version: 1.5
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

Severity: High
Vulnerability Published: 2021-04-08
Patch Published: 2021-04-15
CVE [?]: CVE-2021-3492, CVE-2021-3493, CVE-2021-29154
CPE [?]: cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.10, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3.0-73-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3.0-73-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3.0-1039-raspi2, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3.0-1042-gke, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-72-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-72-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-72-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1014-gkeop, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1034-raspi, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1038-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1042-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1042-gke, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1043-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1045-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1046-azure, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.8.0-50-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.8.0-50-generic-64k, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.8.0-50-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.8.0-50-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.8.0-1021-raspi, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.8.0-1021-raspi-nolpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.8.0-1024-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.8.0-1026-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.8.0-1028-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.8.0-1029-azure, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.8.0-1030-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.10.0-1022-oem, p-cpe:/a:canonical:ubuntu_linux:linux-image-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-aws-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-azure, p-cpe:/a:canonical:ubuntu_linux:linux-image-azure-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-gcp-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-64k, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-64k-hwe-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-64k-hwe-20.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-hwe-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-hwe-20.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lpae-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lpae-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lpae-hwe-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lpae-hwe-20.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-gke, p-cpe:/a:canonical:ubuntu_linux:linux-image-gkeop, p-cpe:/a:canonical:ubuntu_linux:linux-image-gkeop-5.3, p-cpe:/a:canonical:ubuntu_linux:linux-image-gkeop-5.4, p-cpe:/a:canonical:ubuntu_linux:linux-image-gke-5.3, p-cpe:/a:canonical:ubuntu_linux:linux-image-gke-5.4, p-cpe:/a:canonical:ubuntu_linux:linux-image-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency-hwe-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency-hwe-20.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-oem, p-cpe:/a:canonical:ubuntu_linux:linux-image-oem-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-oem-20.04b, p-cpe:/a:canonical:ubuntu_linux:linux-image-oem-20.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-oem-osp1, p-cpe:/a:canonical:ubuntu_linux:linux-image-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-image-oracle-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-raspi, p-cpe:/a:canonical:ubuntu_linux:linux-image-raspi2, p-cpe:/a:canonical:ubuntu_linux:linux-image-raspi2-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-raspi2-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-raspi-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-raspi-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-raspi-nolpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-snapdragon-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-snapdragon-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual, p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual-hwe-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual-hwe-20.04-edge
Exploited by Malware: True

Synopsis

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

Description

The remote Ubuntu 18.04 LTS / 20.04 LTS / 20.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4917-1 advisory.

- BPF JIT compilers in the Linux kernel through 5.11.12 have incorrect computation of branch displacements, allowing them to execute arbitrary code within the kernel context. This affects arch/x86/net/bpf_jit_comp.c and arch/x86/net/bpf_jit_comp32.c. (CVE-2021-29154)

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 (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 / 20.04 LTS / 20.10 : Linux kernel vulnerabilities (USN-4917-1) vulnerability:

  1. Metasploit: exploit/linux/local/cve_2021_3493_overlayfs
    [2021 Ubuntu Overlayfs LPE]
  2. GitHub: https://github.com/hac425xxx/heap-exploitation-in-real-world
    [CVE-2021-3492]
  3. GitHub: https://github.com/joydo/CVE-Writeups
    [CVE-2021-3492]
  4. GitHub: https://github.com/xairy/linux-kernel-exploitation
    [CVE-2021-3492]
  5. GitHub: https://github.com/Abdennour-py/CVE-2021-3493
    [CVE-2021-3493]
  6. GitHub: https://github.com/Al1ex/LinuxEelvation
    [CVE-2021-3493]
  7. GitHub: https://github.com/AmIAHuman/OverlayFS-CVE-2021-3493
    [CVE-2021-3493]
  8. GitHub: https://github.com/EdgeSecurityTeam/Vulnerability
    [CVE-2021-3493]
  9. GitHub: https://github.com/H0j3n/EzpzCheatSheet
    [CVE-2021-3493]
  10. GitHub: https://github.com/Ishan3011/CVE-2021-3493
    [CVE-2021-3493]
  11. GitHub: https://github.com/JamesGeee/CVE-2021-3493
    [CVE-2021-3493: PoC for exploiting CVE-2021-3493]
  12. GitHub: https://github.com/SexyBeast233/SecBooks
    [CVE-2021-3493]
  13. GitHub: https://github.com/ctrsploit/ctrsploit
    [CVE-2021-3493]
  14. GitHub: https://github.com/inspiringz/CVE-2021-3493
    [CVE-2021-3493]
  15. GitHub: https://github.com/oneoy/CVE-2021-3493
    [CVE-2021-3493]
  16. GitHub: https://github.com/puckiestyle/CVE-2021-3493
    [CVE-2021-3493]
  17. GitHub: https://github.com/xairy/linux-kernel-exploitation
    [CVE-2021-3493]
  18. GitHub: https://github.com/synacktiv/CVE-2021-3492
    [CVE-2021-3492: PoC for CVE-2021-3492 used at Pwn2Own 2021]
  19. GitHub: https://github.com/briskets/CVE-2021-3493
    [CVE-2021-3493: Ubuntu OverlayFS Local Privesc]
  20. GitHub: https://github.com/cerodah/overlayFS-CVE-2021-3493
    [CVE-2021-3493: 2021 kernel vulnerability in Ubuntu]
  21. GitHub: https://github.com/derek-turing/CVE-2021-3493
    [CVE-2021-3493: CVE-2021-3493 Ubuntu漏洞]

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-2021-3493
CVSS V2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C/E:H/RL:OF/RC:C
CVSS Base Score:7.2 (High)
Impact Subscore:10.0
Exploitability Subscore:3.9
CVSS Temporal Score:6.3 (Medium)
CVSS Environmental Score:NA (None)
Modified Impact Subscore:NA
Overall CVSS Score:6.3 (Medium)
CVSS V3 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C
CVSS Base Score:7.8 (High)
Impact Subscore:5.9
Exploitability Subscore:1.8
CVSS Temporal Score:7.5 (High)
CVSS Environmental Score:NA (None)
Modified Impact Subscore:NA
Overall CVSS Score:7.5 (High)

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Plugin Source

This is the ubuntu_USN-4917-1.nasl nessus plugin source code. Ubuntu Security Notice (C) 2021-2022 Canonical, Inc. / NASL script (C) 2021-2022 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-4917-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##

include('compat.inc');

if (description)
{
  script_id(148690);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/01/21");

  script_cve_id("CVE-2021-3492", "CVE-2021-3493", "CVE-2021-29154");
  script_xref(name:"USN", value:"4917-1");

  script_name(english:"Ubuntu 18.04 LTS / 20.04 LTS / 20.10 : Linux kernel vulnerabilities (USN-4917-1)");

  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 18.04 LTS / 20.04 LTS / 20.10 host has packages installed that are affected by multiple
vulnerabilities as referenced in the USN-4917-1 advisory.

  - BPF JIT compilers in the Linux kernel through 5.11.12 have incorrect computation of branch displacements,
    allowing them to execute arbitrary code within the kernel context. This affects
    arch/x86/net/bpf_jit_comp.c and arch/x86/net/bpf_jit_comp32.c. (CVE-2021-29154)

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-4917-1");
  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:H/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:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-3493");

  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:'2021 Ubuntu Overlayfs LPE');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/04/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/04/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/04/16");

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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-raspi2-hwe-18.04");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-raspi2-hwe-18.04-edge");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-snapdragon-hwe-18.04");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-snapdragon-hwe-18.04-edge");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual-hwe-18.04");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual-hwe-18.04-edge");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual-hwe-20.04");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual-hwe-20.04-edge");
  script_end_attributes();

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

  script_copyright(english:"Ubuntu Security Notice (C) 2021-2022 Canonical, Inc. / NASL script (C) 2021-2022 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);
release = get_kb_item('Host/Ubuntu/release');
if ( isnull(release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
release = chomp(release);
if (! preg(pattern:"^(18\.04|20\.04|20\.10)$", string:release)) audit(AUDIT_OS_NOT, 'Ubuntu 18.04 / 20.04 / 20.10', '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);

if (get_one_kb_item('Host/ksplice/kernel-cves'))
{
  rm_kb_item(name:'Host/uptrack-uname-r');
  cve_list = make_list('CVE-2021-3492', 'CVE-2021-3493', 'CVE-2021-29154');
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for USN-4917-1');
  }
  else
  {
    _ubuntu_report = ksplice_reporting_text();
  }
}

pkgs = [
    {'osver': '18.04', 'pkgname': 'linux-image-5.3.0-1039-raspi2', 'pkgver': '5.3.0-1039.41'},
    {'osver': '18.04', 'pkgname': 'linux-image-5.3.0-1042-gke', 'pkgver': '5.3.0-1042.45'},
    {'osver': '18.04', 'pkgname': 'linux-image-5.3.0-73-generic', 'pkgver': '5.3.0-73.69'},
    {'osver': '18.04', 'pkgname': 'linux-image-5.3.0-73-lowlatency', 'pkgver': '5.3.0-73.69'},
    {'osver': '18.04', 'pkgname': 'linux-image-5.4.0-1014-gkeop', 'pkgver': '5.4.0-1014.15~18.04.1'},
    {'osver': '18.04', 'pkgname': 'linux-image-5.4.0-1034-raspi', 'pkgver': '5.4.0-1034.37~18.04.1'},
    {'osver': '18.04', 'pkgname': 'linux-image-5.4.0-1042-gcp', 'pkgver': '5.4.0-1042.45~18.04.1'},
    {'osver': '18.04', 'pkgname': 'linux-image-5.4.0-1042-gke', 'pkgver': '5.4.0-1042.44~18.04.1'},
    {'osver': '18.04', 'pkgname': 'linux-image-5.4.0-1043-oracle', 'pkgver': '5.4.0-1043.46~18.04.1'},
    {'osver': '18.04', 'pkgname': 'linux-image-5.4.0-1045-aws', 'pkgver': '5.4.0-1045.47~18.04.1'},
    {'osver': '18.04', 'pkgname': 'linux-image-5.4.0-1046-azure', 'pkgver': '5.4.0-1046.48~18.04.1'},
    {'osver': '18.04', 'pkgname': 'linux-image-5.4.0-72-generic', 'pkgver': '5.4.0-72.80~18.04.1'},
    {'osver': '18.04', 'pkgname': 'linux-image-5.4.0-72-generic-lpae', 'pkgver': '5.4.0-72.80~18.04.1'},
    {'osver': '18.04', 'pkgname': 'linux-image-5.4.0-72-lowlatency', 'pkgver': '5.4.0-72.80~18.04.1'},
    {'osver': '18.04', 'pkgname': 'linux-image-aws', 'pkgver': '5.4.0.1045.27'},
    {'osver': '18.04', 'pkgname': 'linux-image-aws-edge', 'pkgver': '5.4.0.1045.27'},
    {'osver': '18.04', 'pkgname': 'linux-image-azure', 'pkgver': '5.4.0.1046.25'},
    {'osver': '18.04', 'pkgname': 'linux-image-azure-edge', 'pkgver': '5.4.0.1046.25'},
    {'osver': '18.04', 'pkgname': 'linux-image-gcp', 'pkgver': '5.4.0.1042.29'},
    {'osver': '18.04', 'pkgname': 'linux-image-gcp-edge', 'pkgver': '5.4.0.1042.29'},
    {'osver': '18.04', 'pkgname': 'linux-image-generic-hwe-18.04', 'pkgver': '5.4.0.72.80~18.04.65'},
    {'osver': '18.04', 'pkgname': 'linux-image-generic-hwe-18.04-edge', 'pkgver': '5.4.0.72.80~18.04.65'},
    {'osver': '18.04', 'pkgname': 'linux-image-generic-lpae-hwe-18.04', 'pkgver': '5.4.0.72.80~18.04.65'},
    {'osver': '18.04', 'pkgname': 'linux-image-generic-lpae-hwe-18.04-edge', 'pkgver': '5.4.0.72.80~18.04.65'},
    {'osver': '18.04', 'pkgname': 'linux-image-gke-5.3', 'pkgver': '5.3.0.1042.25'},
    {'osver': '18.04', 'pkgname': 'linux-image-gke-5.4', 'pkgver': '5.4.0.1042.44~18.04.8'},
    {'osver': '18.04', 'pkgname': 'linux-image-gkeop-5.3', 'pkgver': '5.3.0.73.130'},
    {'osver': '18.04', 'pkgname': 'linux-image-gkeop-5.4', 'pkgver': '5.4.0.1014.15~18.04.15'},
    {'osver': '18.04', 'pkgname': 'linux-image-lowlatency-hwe-18.04', 'pkgver': '5.4.0.72.80~18.04.65'},
    {'osver': '18.04', 'pkgname': 'linux-image-lowlatency-hwe-18.04-edge', 'pkgver': '5.4.0.72.80~18.04.65'},
    {'osver': '18.04', 'pkgname': 'linux-image-oem', 'pkgver': '5.4.0.72.80~18.04.65'},
    {'osver': '18.04', 'pkgname': 'linux-image-oem-osp1', 'pkgver': '5.4.0.72.80~18.04.65'},
    {'osver': '18.04', 'pkgname': 'linux-image-oracle', 'pkgver': '5.4.0.1043.46~18.04.25'},
    {'osver': '18.04', 'pkgname': 'linux-image-oracle-edge', 'pkgver': '5.4.0.1043.46~18.04.25'},
    {'osver': '18.04', 'pkgname': 'linux-image-raspi-hwe-18.04', 'pkgver': '5.4.0.1034.36'},
    {'osver': '18.04', 'pkgname': 'linux-image-raspi-hwe-18.04-edge', 'pkgver': '5.4.0.1034.36'},
    {'osver': '18.04', 'pkgname': 'linux-image-raspi2-hwe-18.04', 'pkgver': '5.3.0.1039.28'},
    {'osver': '18.04', 'pkgname': 'linux-image-snapdragon-hwe-18.04', 'pkgver': '5.4.0.72.80~18.04.65'},
    {'osver': '18.04', 'pkgname': 'linux-image-snapdragon-hwe-18.04-edge', 'pkgver': '5.4.0.72.80~18.04.65'},
    {'osver': '18.04', 'pkgname': 'linux-image-virtual-hwe-18.04', 'pkgver': '5.4.0.72.80~18.04.65'},
    {'osver': '18.04', 'pkgname': 'linux-image-virtual-hwe-18.04-edge', 'pkgver': '5.4.0.72.80~18.04.65'},
    {'osver': '20.04', 'pkgname': 'linux-image-5.10.0-1022-oem', 'pkgver': '5.10.0-1022.23'},
    {'osver': '20.04', 'pkgname': 'linux-image-5.4.0-1014-gkeop', 'pkgver': '5.4.0-1014.15'},
    {'osver': '20.04', 'pkgname': 'linux-image-5.4.0-1034-raspi', 'pkgver': '5.4.0-1034.37'},
    {'osver': '20.04', 'pkgname': 'linux-image-5.4.0-1038-kvm', 'pkgver': '5.4.0-1038.39'},
    {'osver': '20.04', 'pkgname': 'linux-image-5.4.0-1042-gcp', 'pkgver': '5.4.0-1042.45'},
    {'osver': '20.04', 'pkgname': 'linux-image-5.4.0-1043-oracle', 'pkgver': '5.4.0-1043.46'},
    {'osver': '20.04', 'pkgname': 'linux-image-5.4.0-1045-aws', 'pkgver': '5.4.0-1045.47'},
    {'osver': '20.04', 'pkgname': 'linux-image-5.4.0-1046-azure', 'pkgver': '5.4.0-1046.48'},
    {'osver': '20.04', 'pkgname': 'linux-image-5.4.0-72-generic', 'pkgver': '5.4.0-72.80'},
    {'osver': '20.04', 'pkgname': 'linux-image-5.4.0-72-generic-lpae', 'pkgver': '5.4.0-72.80'},
    {'osver': '20.04', 'pkgname': 'linux-image-5.4.0-72-lowlatency', 'pkgver': '5.4.0-72.80'},
    {'osver': '20.04', 'pkgname': 'linux-image-5.8.0-50-generic', 'pkgver': '5.8.0-50.56~20.04.1'},
    {'osver': '20.04', 'pkgname': 'linux-image-5.8.0-50-generic-64k', 'pkgver': '5.8.0-50.56~20.04.1'},
    {'osver': '20.04', 'pkgname': 'linux-image-5.8.0-50-generic-lpae', 'pkgver': '5.8.0-50.56~20.04.1'},
    {'osver': '20.04', 'pkgname': 'linux-image-5.8.0-50-lowlatency', 'pkgver': '5.8.0-50.56~20.04.1'},
    {'osver': '20.04', 'pkgname': 'linux-image-aws', 'pkgver': '5.4.0.1045.46'},
    {'osver': '20.04', 'pkgname': 'linux-image-azure', 'pkgver': '5.4.0.1046.44'},
    {'osver': '20.04', 'pkgname': 'linux-image-gcp', 'pkgver': '5.4.0.1042.51'},
    {'osver': '20.04', 'pkgname': 'linux-image-generic', 'pkgver': '5.4.0.72.75'},
    {'osver': '20.04', 'pkgname': 'linux-image-generic-64k-hwe-20.04', 'pkgver': '5.8.0.50.56~20.04.34'},
    {'osver': '20.04', 'pkgname': 'linux-image-generic-64k-hwe-20.04-edge', 'pkgver': '5.8.0.50.56~20.04.34'},
    {'osver': '20.04', 'pkgname': 'linux-image-generic-hwe-18.04', 'pkgver': '5.4.0.72.75'},
    {'osver': '20.04', 'pkgname': 'linux-image-generic-hwe-18.04-edge', 'pkgver': '5.4.0.72.75'},
    {'osver': '20.04', 'pkgname': 'linux-image-generic-hwe-20.04', 'pkgver': '5.8.0.50.56~20.04.34'},
    {'osver': '20.04', 'pkgname': 'linux-image-generic-hwe-20.04-edge', 'pkgver': '5.8.0.50.56~20.04.34'},
    {'osver': '20.04', 'pkgname': 'linux-image-generic-lpae', 'pkgver': '5.4.0.72.75'},
    {'osver': '20.04', 'pkgname': 'linux-image-generic-lpae-hwe-18.04', 'pkgver': '5.4.0.72.75'},
    {'osver': '20.04', 'pkgname': 'linux-image-generic-lpae-hwe-18.04-edge', 'pkgver': '5.4.0.72.75'},
    {'osver': '20.04', 'pkgname': 'linux-image-generic-lpae-hwe-20.04', 'pkgver': '5.8.0.50.56~20.04.34'},
    {'osver': '20.04', 'pkgname': 'linux-image-generic-lpae-hwe-20.04-edge', 'pkgver': '5.8.0.50.56~20.04.34'},
    {'osver': '20.04', 'pkgname': 'linux-image-gkeop', 'pkgver': '5.4.0.1014.17'},
    {'osver': '20.04', 'pkgname': 'linux-image-gkeop-5.4', 'pkgver': '5.4.0.1014.17'},
    {'osver': '20.04', 'pkgname': 'linux-image-kvm', 'pkgver': '5.4.0.1038.36'},
    {'osver': '20.04', 'pkgname': 'linux-image-lowlatency', 'pkgver': '5.4.0.72.75'},
    {'osver': '20.04', 'pkgname': 'linux-image-lowlatency-hwe-18.04', 'pkgver': '5.4.0.72.75'},
    {'osver': '20.04', 'pkgname': 'linux-image-lowlatency-hwe-18.04-edge', 'pkgver': '5.4.0.72.75'},
    {'osver': '20.04', 'pkgname': 'linux-image-lowlatency-hwe-20.04', 'pkgver': '5.8.0.50.56~20.04.34'},
    {'osver': '20.04', 'pkgname': 'linux-image-lowlatency-hwe-20.04-edge', 'pkgver': '5.8.0.50.56~20.04.34'},
    {'osver': '20.04', 'pkgname': 'linux-image-oem', 'pkgver': '5.4.0.72.75'},
    {'osver': '20.04', 'pkgname': 'linux-image-oem-20.04-edge', 'pkgver': '5.10.0.1022.23'},
    {'osver': '20.04', 'pkgname': 'linux-image-oem-20.04b', 'pkgver': '5.10.0.1022.23'},
    {'osver': '20.04', 'pkgname': 'linux-image-oem-osp1', 'pkgver': '5.4.0.72.75'},
    {'osver': '20.04', 'pkgname': 'linux-image-oracle', 'pkgver': '5.4.0.1043.40'},
    {'osver': '20.04', 'pkgname': 'linux-image-raspi', 'pkgver': '5.4.0.1034.69'},
    {'osver': '20.04', 'pkgname': 'linux-image-raspi-hwe-18.04', 'pkgver': '5.4.0.1034.69'},
    {'osver': '20.04', 'pkgname': 'linux-image-raspi-hwe-18.04-edge', 'pkgver': '5.4.0.1034.69'},
    {'osver': '20.04', 'pkgname': 'linux-image-raspi2', 'pkgver': '5.4.0.1034.69'},
    {'osver': '20.04', 'pkgname': 'linux-image-raspi2-hwe-18.04', 'pkgver': '5.4.0.1034.69'},
    {'osver': '20.04', 'pkgname': 'linux-image-raspi2-hwe-18.04-edge', 'pkgver': '5.4.0.1034.69'},
    {'osver': '20.04', 'pkgname': 'linux-image-virtual', 'pkgver': '5.4.0.72.75'},
    {'osver': '20.04', 'pkgname': 'linux-image-virtual-hwe-18.04', 'pkgver': '5.4.0.72.75'},
    {'osver': '20.04', 'pkgname': 'linux-image-virtual-hwe-18.04-edge', 'pkgver': '5.4.0.72.75'},
    {'osver': '20.04', 'pkgname': 'linux-image-virtual-hwe-20.04', 'pkgver': '5.8.0.50.56~20.04.34'},
    {'osver': '20.04', 'pkgname': 'linux-image-virtual-hwe-20.04-edge', 'pkgver': '5.8.0.50.56~20.04.34'},
    {'osver': '20.10', 'pkgname': 'linux-image-5.8.0-1021-raspi', 'pkgver': '5.8.0-1021.24'},
    {'osver': '20.10', 'pkgname': 'linux-image-5.8.0-1021-raspi-nolpae', 'pkgver': '5.8.0-1021.24'},
    {'osver': '20.10', 'pkgname': 'linux-image-5.8.0-1024-kvm', 'pkgver': '5.8.0-1024.26'},
    {'osver': '20.10', 'pkgname': 'linux-image-5.8.0-1026-oracle', 'pkgver': '5.8.0-1026.27'},
    {'osver': '20.10', 'pkgname': 'linux-image-5.8.0-1028-gcp', 'pkgver': '5.8.0-1028.29'},
    {'osver': '20.10', 'pkgname': 'linux-image-5.8.0-1029-azure', 'pkgver': '5.8.0-1029.31'},
    {'osver': '20.10', 'pkgname': 'linux-image-5.8.0-1030-aws', 'pkgver': '5.8.0-1030.32'},
    {'osver': '20.10', 'pkgname': 'linux-image-5.8.0-50-generic', 'pkgver': '5.8.0-50.56'},
    {'osver': '20.10', 'pkgname': 'linux-image-5.8.0-50-generic-64k', 'pkgver': '5.8.0-50.56'},
    {'osver': '20.10', 'pkgname': 'linux-image-5.8.0-50-generic-lpae', 'pkgver': '5.8.0-50.56'},
    {'osver': '20.10', 'pkgname': 'linux-image-5.8.0-50-lowlatency', 'pkgver': '5.8.0-50.56'},
    {'osver': '20.10', 'pkgname': 'linux-image-aws', 'pkgver': '5.8.0.1030.32'},
    {'osver': '20.10', 'pkgname': 'linux-image-azure', 'pkgver': '5.8.0.1029.29'},
    {'osver': '20.10', 'pkgname': 'linux-image-gcp', 'pkgver': '5.8.0.1028.28'},
    {'osver': '20.10', 'pkgname': 'linux-image-generic', 'pkgver': '5.8.0.50.55'},
    {'osver': '20.10', 'pkgname': 'linux-image-generic-64k', 'pkgver': '5.8.0.50.55'},
    {'osver': '20.10', 'pkgname': 'linux-image-generic-64k-hwe-20.04', 'pkgver': '5.8.0.50.55'},
    {'osver': '20.10', 'pkgname': 'linux-image-generic-64k-hwe-20.04-edge', 'pkgver': '5.8.0.50.55'},
    {'osver': '20.10', 'pkgname': 'linux-image-generic-hwe-20.04', 'pkgver': '5.8.0.50.55'},
    {'osver': '20.10', 'pkgname': 'linux-image-generic-hwe-20.04-edge', 'pkgver': '5.8.0.50.55'},
    {'osver': '20.10', 'pkgname': 'linux-image-generic-lpae', 'pkgver': '5.8.0.50.55'},
    {'osver': '20.10', 'pkgname': 'linux-image-generic-lpae-hwe-20.04', 'pkgver': '5.8.0.50.55'},
    {'osver': '20.10', 'pkgname': 'linux-image-generic-lpae-hwe-20.04-edge', 'pkgver': '5.8.0.50.55'},
    {'osver': '20.10', 'pkgname': 'linux-image-gke', 'pkgver': '5.8.0.1028.28'},
    {'osver': '20.10', 'pkgname': 'linux-image-kvm', 'pkgver': '5.8.0.1024.26'},
    {'osver': '20.10', 'pkgname': 'linux-image-lowlatency', 'pkgver': '5.8.0.50.55'},
    {'osver': '20.10', 'pkgname': 'linux-image-lowlatency-hwe-20.04', 'pkgver': '5.8.0.50.55'},
    {'osver': '20.10', 'pkgname': 'linux-image-lowlatency-hwe-20.04-edge', 'pkgver': '5.8.0.50.55'},
    {'osver': '20.10', 'pkgname': 'linux-image-oem-20.04', 'pkgver': '5.8.0.50.55'},
    {'osver': '20.10', 'pkgname': 'linux-image-oracle', 'pkgver': '5.8.0.1026.25'},
    {'osver': '20.10', 'pkgname': 'linux-image-raspi', 'pkgver': '5.8.0.1021.24'},
    {'osver': '20.10', 'pkgname': 'linux-image-raspi-nolpae', 'pkgver': '5.8.0.1021.24'},
    {'osver': '20.10', 'pkgname': 'linux-image-virtual', 'pkgver': '5.8.0.50.55'},
    {'osver': '20.10', 'pkgname': 'linux-image-virtual-hwe-20.04', 'pkgver': '5.8.0.50.55'},
    {'osver': '20.10', 'pkgname': 'linux-image-virtual-hwe-20.04-edge', 'pkgver': '5.8.0.50.55'}
];

flag = 0;
foreach package_array ( pkgs ) {
  osver = NULL;
  pkgname = NULL;
  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
{
  tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'linux-image-5.10.0-1022-oem / linux-image-5.3.0-1039-raspi2 / 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-4917-1.nasl
  • Windows:
    C:\ProgramData\Tenable\Nessus\nessus\plugins\ubuntu_USN-4917-1.nasl
  • Mac OS X:
    /Library/Nessus/run/lib/nessus/plugins/ubuntu_USN-4917-1.nasl

Go back to menu.

How to Run

Here is how to run the Ubuntu 18.04 LTS / 20.04 LTS / 20.10 : Linux kernel vulnerabilities (USN-4917-1) as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

  1. Click to start a New Scan.
  2. Select Advanced Scan.
  3. Navigate to the Plugins tab.
  4. On the top right corner click to Disable All plugins.
  5. On the left side table select Ubuntu Local Security Checks plugin family.
  6. On the right side table select Ubuntu 18.04 LTS / 20.04 LTS / 20.10 : Linux kernel vulnerabilities (USN-4917-1) plugin ID 148690.
  7. Specify the target on the Settings tab and click to Save the scan.
  8. 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-4917-1.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a ubuntu_USN-4917-1.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-4917-1.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-4917-1.nasl -t <IP/HOST>

Go back to menu.

References

USN | Ubuntu Security Notice: See also: Similar and related Nessus plugins:
  • 148494 - Ubuntu 20.04 LTS : Linux kernel (OEM) vulnerabilities (USN-4912-1)
  • 148689 - Ubuntu 20.04 LTS : Linux kernel (OEM) vulnerabilities (USN-4915-1)
  • 148691 - Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-4916-1)
  • 148698 - SUSE SLES15 Security Update : kernel (SUSE-SU-2021:1211-1)
  • 148700 - SUSE SLES12 Security Update : kernel (SUSE-SU-2021:1210-1)
  • 148723 - Fedora 33 : kernel (2021-e71c033f88)
  • 148747 - SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2021:1238-1)
  • 148919 - Amazon Linux 2 : kernel (ALAS-2021-1627)
  • 149462 - SUSE SLES15 Security Update : kernel (SUSE-SU-2021:1573-1)
  • 149491 - SUSE SLES12 Security Update : kernel (SUSE-SU-2021:1596-1)
  • 149605 - openSUSE Security Update : the Linux Kernel (openSUSE-2021-579)
  • 149633 - SUSE SLES12 Security Update : kernel (SUSE-SU-2021:1617-1)
  • 149716 - SUSE SLES12 Security Update : kernel (SUSE-SU-2021:1623-1)
  • 149717 - SUSE SLES15 Security Update : kernel (SUSE-SU-2021:1624-1)
  • 149872 - Amazon Linux AMI : kernel (ALAS-2021-1503)
  • 149892 - openSUSE Security Update : the Linux Kernel (openSUSE-2021-758)
  • 150253 - EulerOS Virtualization 2.9.0 : kernel (EulerOS-SA-2021-1971)
  • 150271 - EulerOS Virtualization 2.9.1 : kernel (EulerOS-SA-2021-1967)
  • 150305 - SUSE SLES12 Security Update : kernel (Live Patch 38 for SLE 12 SP3) (SUSE-SU-2021:1870-1)

Version

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