CentOS 8 : kernel-rt (CESA-2021:4140) - Nessus

High Plugin ID: 155070

This page contains detailed information about the CentOS 8 : kernel-rt (CESA-2021:4140) 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: 155070
Name: CentOS 8 : kernel-rt (CESA-2021:4140)
Filename: centos8_RHSA-2021-4140.nasl
Vulnerability Published: 2020-01-15
This Plugin Published: 2021-11-11
Last Modification Time: 2021-11-11
Plugin Version: 1.2
Plugin Type: local
Plugin Family: CentOS Local Security Checks
Dependencies: linux_alt_patch_detect.nasl, ssh_get_info.nasl
Required KB Items [?]: Host/CentOS/release, Host/CentOS/rpm-list, Host/cpu, Host/local_checks_enabled

Vulnerability Information

Synopsis

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

Description

The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2021:4140 advisory.

- kernel: Intel graphics card information leak. (CVE-2019-14615)

- kernel: out-of-bounds reads in pinctrl subsystem. (CVE-2020-0427)

- kernel: Improper input validation in some Intel(R) Ethernet E810 Adapter drivers (CVE-2020-24502)

- kernel: Insufficient access control in some Intel(R) Ethernet E810 Adapter drivers (CVE-2020-24503)

- kernel: Uncontrolled resource consumption in some Intel(R) Ethernet E810 Adapter drivers (CVE-2020-24504)

- kernel: Fragmentation cache not cleared on reconnection (CVE-2020-24586)

- kernel: Reassembling fragments encrypted under different keys (CVE-2020-24587)

- kernel: wifi frame payload being parsed incorrectly as an L2 frame (CVE-2020-24588)

- kernel: Forwarding EAPOL from unauthenticated wifi client (CVE-2020-26139)

- kernel: accepting plaintext data frames in protected networks (CVE-2020-26140)

- kernel: not verifying TKIP MIC of fragmented frames (CVE-2020-26141)

- kernel: accepting fragmented plaintext frames in protected networks (CVE-2020-26143)

- kernel: accepting unencrypted A-MSDU frames that start with RFC1042 header (CVE-2020-26144)

- kernel: accepting plaintext broadcast fragments as full frames (CVE-2020-26145)

- kernel: reassembling encrypted fragments with non-consecutive packet numbers (CVE-2020-26146)

- kernel: reassembling mixed encrypted/plaintext fragments (CVE-2020-26147)

- kernel: the copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check (CVE-2020-29368)

- kernel: locking inconsistency in drivers/tty/tty_io.c and drivers/tty/tty_jobctrl.c can lead to a read- after-free (CVE-2020-29660)

- kernel: buffer overflow in mwifiex_cmd_802_11_ad_hoc_start function in drivers/net/wireless/marvell/mwifiex/join.c via a long SSID value (CVE-2020-36158)

- kernel: memory leak upon a kmalloc failure in kvm_io_bus_unregister_dev function in virt/kvm/kvm_main.c (CVE-2020-36312)

- kernel: slab out-of-bounds read in hci_extended_inquiry_result_evt() in net/bluetooth/hci_event.c (CVE-2020-36386)

- kernel: Improper access control in BlueZ may allow information disclosure vulnerability. (CVE-2021-0129)

- kernel: heap overflow in __cgroup_bpf_run_filter_getsockopt() (CVE-2021-20194)

- kernel: setsockopt System Call Untrusted Pointer Dereference Information Disclosure (CVE-2021-20239)

- kernel: Race condition in sctp_destroy_sock list_del (CVE-2021-23133)

- kernel: fuse: stall on CPU can occur because a retry loop continually finds the same bad inode (CVE-2021-28950)

- kernel: System crash in intel_pmu_drain_pebs_nhm in arch/x86/events/intel/ds.c (CVE-2021-28971)

- kernel: protection for sequences of pointer arithmetic operations against speculatively out-of-bounds loads can be bypassed to leak content of kernel memory (CVE-2021-29155)

- kernel: improper input validation in tipc_nl_retrieve_key function in net/tipc/node.c (CVE-2021-29646)

- kernel: lack a full memory barrier upon the assignment of a new table value in net/netfilter/x_tables.c and include/linux/netfilter/x_tables.h may lead to DoS (CVE-2021-29650)

- kernel: local escalation of privileges in handling of eBPF programs (CVE-2021-31440)

- kernel: protection of stack pointer against speculative pointer arithmetic can be bypassed to leak content of kernel memory (CVE-2021-31829)

- kernel: out of bounds array access in drivers/md/dm-ioctl.c (CVE-2021-31916)

- kernel: use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c (CVE-2021-33033)

- kernel: out-of-bounds reads and writes due to enforcing incorrect limits for pointer arithmetic operations by BPF verifier (CVE-2021-33200)

- kernel: Use-after-free in ndb_queue_rq() in drivers/block/nbd.c (CVE-2021-3348)

- kernel: Linux kernel eBPF RINGBUF map oversized allocation (CVE-2021-3489)

- kernel: double free in bluetooth subsystem when the HCI device initialization fails (CVE-2021-3564)

- kernel: use-after-free in function hci_sock_bound_ioctl() (CVE-2021-3573)

- kernel: eBPF 32-bit source register truncation on div/mod (CVE-2021-3600)

- kernel: flowtable list del corruption with kernel BUG at lib/list_debug.c:50 (CVE-2021-3635)

- kernel: NULL pointer dereference in llsec_key_alloc() in net/mac802154/llsec.c (CVE-2021-3659)

- kernel: DoS in rb_per_cpu_empty() (CVE-2021-3679)

- kernel: overlayfs: Mounting overlayfs inside an unprivileged user namespace can reveal files (CVE-2021-3732)

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 CentOS 8 : kernel-rt (CESA-2021:4140) vulnerability:

GitHub: https://github.com/vanhoefm/fragattacks
[CVE-2020-24586]
GitHub: https://github.com/vanhoefm/fragattacks
[CVE-2020-24587]
GitHub: https://github.com/vanhoefm/fragattacks
[CVE-2020-24588]
GitHub: https://github.com/vanhoefm/fragattacks
[CVE-2020-26139]
GitHub: https://github.com/vanhoefm/fragattacks
[CVE-2020-26140]
GitHub: https://github.com/vanhoefm/fragattacks
[CVE-2020-26143]
GitHub: https://github.com/vanhoefm/fragattacks
[CVE-2020-26144]
GitHub: https://github.com/vanhoefm/fragattacks
[CVE-2020-26145]
GitHub: https://github.com/vanhoefm/fragattacks
[CVE-2020-26146]
GitHub: https://github.com/vanhoefm/fragattacks
[CVE-2020-26147]
GitHub: https://github.com/Satheesh575555/linux-4.19.72_CVE-2020-29368
[CVE-2020-29368]
GitHub: https://github.com/JamesGeeee/CVE-2020-36386
[CVE-2020-36386: PoC for exploiting CVE-2020-36386]
GitHub: https://github.com/artsking/linux-3.0.35_CVE-2020-36386_withPatch
[CVE-2020-36386]
GitHub: https://github.com/artsking/linux-4.1.15_CVE-2020-36386_withPatch
[CVE-2020-36386]
GitHub: https://github.com/madhans23/kernel_imx_4.1.15-CVE-2020-36386_noPatch
[CVE-2020-36386]
GitHub: https://github.com/AlAIAL90/CVE-2021-0129
[CVE-2021-0129: PoC for exploiting CVE-2021-0129 : Improper access control in BlueZ may allow an ...]
GitHub: https://github.com/xairy/linux-kernel-exploitation
[CVE-2021-3573]
GitHub: https://github.com/aegistudio/RingBufferDetonator
[CVE-2021-3679]
GitHub: https://github.com/Al1ex/LinuxEelvation
[CVE-2021-31440]
GitHub: https://github.com/ChoKyuWon/exploit_articles
[CVE-2021-31440]
GitHub: https://github.com/bsauce/kernel-exploit-factory
[CVE-2021-31440]
GitHub: https://github.com/bsauce/kernel-security-learning
[CVE-2021-31440]
GitHub: https://github.com/digamma-ai/CVE-2020-8835-verification
[CVE-2021-31440]
GitHub: https://github.com/hacking-kubernetes/hacking-kubernetes.info
[CVE-2021-31440]
GitHub: https://github.com/JamesGeee/CVE-2021-31916
[CVE-2021-31916: PoC for exploiting CVE-2021-31916]
GitHub: https://github.com/JamesGeee/CVE-2021-33200
[CVE-2021-33200: PoC for exploiting CVE-2021-33200]
GitHub: https://github.com/HE-Wenjian/iGPU-Leak
[CVE-2019-14615: [CVE-2019-14615] iGPU Leak: An Information Leakage Vulnerability on Intel Integrated ...]
GitHub: https://github.com/Kakashiiiiy/CVE-2021-29155
[CVE-2021-29155: Proof of Concept CVE-2021-29155]

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-2021-3489
CVSS V2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C/E:U/RL:OF/RC:C

CVSS Base Score:	7.2 (High)
Impact Subscore:	10.0
Exploitability Subscore:	3.9
CVSS Temporal Score:	5.3 (Medium)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	5.3 (Medium)

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

CVSS Base Score:	7.8 (High)
Impact Subscore:	5.9
Exploitability Subscore:	1.8
CVSS Temporal Score:	6.8 (Medium)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	6.8 (Medium)

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

Go back to menu.

Plugin Source

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
#
# The package checks in this plugin were extracted from
# Red Hat Security Advisory RHSA-2021:4140. The text
# itself is copyright (C) Red Hat, Inc.
##

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

if (description)
{
  script_id(155070);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/11/11");

  script_cve_id(
    "CVE-2019-14615",
    "CVE-2020-0427",
    "CVE-2020-24502",
    "CVE-2020-24503",
    "CVE-2020-24504",
    "CVE-2020-24586",
    "CVE-2020-24587",
    "CVE-2020-24588",
    "CVE-2020-26139",
    "CVE-2020-26140",
    "CVE-2020-26141",
    "CVE-2020-26143",
    "CVE-2020-26144",
    "CVE-2020-26145",
    "CVE-2020-26146",
    "CVE-2020-26147",
    "CVE-2020-29368",
    "CVE-2020-29660",
    "CVE-2020-36158",
    "CVE-2020-36312",
    "CVE-2020-36386",
    "CVE-2021-0129",
    "CVE-2021-3348",
    "CVE-2021-3489",
    "CVE-2021-3564",
    "CVE-2021-3573",
    "CVE-2021-3600",
    "CVE-2021-3635",
    "CVE-2021-3659",
    "CVE-2021-3679",
    "CVE-2021-3732",
    "CVE-2021-20194",
    "CVE-2021-20239",
    "CVE-2021-23133",
    "CVE-2021-28950",
    "CVE-2021-28971",
    "CVE-2021-29155",
    "CVE-2021-29646",
    "CVE-2021-29650",
    "CVE-2021-31440",
    "CVE-2021-31829",
    "CVE-2021-31916",
    "CVE-2021-33033",
    "CVE-2021-33200"
  );
  script_xref(name:"RHSA", value:"2021:4140");
  script_xref(name:"IAVA", value:"2021-A-0223-S");
  script_xref(name:"IAVA", value:"2021-A-0222-S");

  script_name(english:"CentOS 8 : kernel-rt (CESA-2021:4140)");

  script_set_attribute(attribute:"synopsis", value:
"The remote CentOS host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the
CESA-2021:4140 advisory.

  - kernel: Intel graphics card information leak. (CVE-2019-14615)

  - kernel: out-of-bounds reads in pinctrl subsystem. (CVE-2020-0427)

  - kernel: Improper input validation in some Intel(R) Ethernet E810 Adapter drivers (CVE-2020-24502)

  - kernel: Insufficient access control in some Intel(R) Ethernet E810 Adapter drivers (CVE-2020-24503)

  - kernel: Uncontrolled resource consumption in some Intel(R) Ethernet E810 Adapter drivers (CVE-2020-24504)

  - kernel: Fragmentation cache not cleared on reconnection (CVE-2020-24586)

  - kernel: Reassembling fragments encrypted under different keys (CVE-2020-24587)

  - kernel: wifi frame payload being parsed incorrectly as an L2 frame (CVE-2020-24588)

  - kernel: Forwarding EAPOL from unauthenticated wifi client (CVE-2020-26139)

  - kernel: accepting plaintext data frames in protected networks (CVE-2020-26140)

  - kernel: not verifying TKIP MIC of fragmented frames (CVE-2020-26141)

  - kernel: accepting fragmented plaintext frames in protected networks (CVE-2020-26143)

  - kernel: accepting unencrypted A-MSDU frames that start with RFC1042 header (CVE-2020-26144)

  - kernel: accepting plaintext broadcast fragments as full frames (CVE-2020-26145)

  - kernel: reassembling encrypted fragments with non-consecutive packet numbers (CVE-2020-26146)

  - kernel: reassembling mixed encrypted/plaintext fragments (CVE-2020-26147)

  - kernel: the copy-on-write implementation can grant unintended write access because of a race condition in
    a THP mapcount check (CVE-2020-29368)

  - kernel: locking inconsistency in drivers/tty/tty_io.c and drivers/tty/tty_jobctrl.c can lead to a read-
    after-free (CVE-2020-29660)

  - kernel: buffer overflow in mwifiex_cmd_802_11_ad_hoc_start function in
    drivers/net/wireless/marvell/mwifiex/join.c via a long SSID value (CVE-2020-36158)

  - kernel: memory leak upon a kmalloc failure in kvm_io_bus_unregister_dev function in virt/kvm/kvm_main.c
    (CVE-2020-36312)

  - kernel: slab out-of-bounds read in hci_extended_inquiry_result_evt() in net/bluetooth/hci_event.c
    (CVE-2020-36386)

  - kernel: Improper access control in BlueZ may allow information disclosure vulnerability. (CVE-2021-0129)

  - kernel: heap overflow in __cgroup_bpf_run_filter_getsockopt() (CVE-2021-20194)

  - kernel: setsockopt System Call Untrusted Pointer Dereference Information Disclosure (CVE-2021-20239)

  - kernel: Race condition in sctp_destroy_sock list_del (CVE-2021-23133)

  - kernel: fuse: stall on CPU can occur because a retry loop continually finds the same bad inode
    (CVE-2021-28950)

  - kernel: System crash in intel_pmu_drain_pebs_nhm in arch/x86/events/intel/ds.c (CVE-2021-28971)

  - kernel: protection for sequences of pointer arithmetic operations against speculatively out-of-bounds
    loads can be bypassed to leak content of kernel memory (CVE-2021-29155)

  - kernel: improper input validation in tipc_nl_retrieve_key function in net/tipc/node.c (CVE-2021-29646)

  - kernel: lack a full memory barrier upon the assignment of a new table value in net/netfilter/x_tables.c
    and include/linux/netfilter/x_tables.h may lead to DoS (CVE-2021-29650)

  - kernel: local escalation of privileges in handling of eBPF programs (CVE-2021-31440)

  - kernel: protection of stack pointer against speculative pointer arithmetic can be bypassed to leak content
    of kernel memory (CVE-2021-31829)

  - kernel: out of bounds array access in drivers/md/dm-ioctl.c (CVE-2021-31916)

  - kernel: use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c (CVE-2021-33033)

  - kernel: out-of-bounds reads and writes due to enforcing incorrect limits for pointer arithmetic operations
    by BPF verifier (CVE-2021-33200)

  - kernel: Use-after-free in ndb_queue_rq() in drivers/block/nbd.c (CVE-2021-3348)

  - kernel: Linux kernel eBPF RINGBUF map oversized allocation (CVE-2021-3489)

  - kernel: double free in bluetooth subsystem when the HCI device initialization fails (CVE-2021-3564)

  - kernel: use-after-free in function hci_sock_bound_ioctl() (CVE-2021-3573)

  - kernel: eBPF 32-bit source register truncation on div/mod (CVE-2021-3600)

  - kernel: flowtable list del corruption with kernel BUG at lib/list_debug.c:50 (CVE-2021-3635)

  - kernel: NULL pointer dereference in llsec_key_alloc() in net/mac802154/llsec.c (CVE-2021-3659)

  - kernel: DoS in rb_per_cpu_empty() (CVE-2021-3679)

  - kernel: overlayfs: Mounting overlayfs inside an unprivileged user namespace can reveal files
    (CVE-2021-3732)

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://access.redhat.com/errata/RHSA-2021:4140");
  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:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-3489");

  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:"2020/01/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/11/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/11/11");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:8-stream");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-rt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-rt-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-rt-debug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-rt-debug-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-rt-debug-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-rt-debug-modules");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-rt-debug-modules-extra");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-rt-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-rt-modules");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-rt-modules-extra");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2021 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/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/rpm-list", "Host/cpu");

  exit(0);
}


include('audit.inc');
include('global_settings.inc');
include('misc_func.inc');
include('rpm.inc');
include('rhel.inc');
include('ksplice.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var release = get_kb_item('Host/CentOS/release');
if (isnull(release) || 'CentOS' >!< release) audit(AUDIT_OS_NOT, 'CentOS');
var os_ver = pregmatch(pattern: "CentOS(?: Stream)?(?: Linux)? release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'CentOS');
var os_ver = os_ver[1];
if ('CentOS Stream' >!< release) audit(AUDIT_OS_NOT, 'CentOS 8-Stream');
if (!rhel_check_release(operator: 'ge', os_version: os_ver, rhel_version: '8')) audit(AUDIT_OS_NOT, 'CentOS 8.x', 'CentOS ' + os_ver);

if (!get_kb_item('Host/CentOS/rpm-list')) 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$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'CentOS', cpu);

if (get_one_kb_item('Host/ksplice/kernel-cves'))
{
  rm_kb_item(name:'Host/uptrack-uname-r');
  var cve_list = make_list('CVE-2019-14615', 'CVE-2020-0427', 'CVE-2020-24502', 'CVE-2020-24503', 'CVE-2020-24504', 'CVE-2020-24586', 'CVE-2020-24587', 'CVE-2020-24588', 'CVE-2020-26139', 'CVE-2020-26140', 'CVE-2020-26141', 'CVE-2020-26143', 'CVE-2020-26144', 'CVE-2020-26145', 'CVE-2020-26146', 'CVE-2020-26147', 'CVE-2020-29368', 'CVE-2020-29660', 'CVE-2020-36158', 'CVE-2020-36312', 'CVE-2020-36386', 'CVE-2021-0129', 'CVE-2021-3348', 'CVE-2021-3489', 'CVE-2021-3564', 'CVE-2021-3573', 'CVE-2021-3600', 'CVE-2021-3635', 'CVE-2021-3659', 'CVE-2021-3679', 'CVE-2021-3732', 'CVE-2021-20194', 'CVE-2021-20239', 'CVE-2021-23133', 'CVE-2021-28950', 'CVE-2021-28971', 'CVE-2021-29155', 'CVE-2021-29646', 'CVE-2021-29650', 'CVE-2021-31440', 'CVE-2021-31829', 'CVE-2021-31916', 'CVE-2021-33033', 'CVE-2021-33200');
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for CESA-2021:4140');
  }
  else
  {
    __rpm_report = ksplice_reporting_text();
  }
}

var pkgs = [
    {'reference':'kernel-rt-4.18.0-348.rt7.130.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-rt-core-4.18.0-348.rt7.130.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-rt-debug-4.18.0-348.rt7.130.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-rt-debug-core-4.18.0-348.rt7.130.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-rt-debug-devel-4.18.0-348.rt7.130.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-rt-debug-modules-4.18.0-348.rt7.130.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-rt-debug-modules-extra-4.18.0-348.rt7.130.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-rt-devel-4.18.0-348.rt7.130.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-rt-modules-4.18.0-348.rt7.130.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-rt-modules-extra-4.18.0-348.rt7.130.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var reference = NULL;
  var release = NULL;
  var sp = NULL;
  var cpu = NULL;
  var el_string = NULL;
  var rpm_spec_vers_cmp = NULL;
  var epoch = NULL;
  var allowmaj = NULL;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) release = 'CentOS-' + package_array['release'];
  if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
  if (!empty_or_null(package_array['cpu'])) cpu = package_array['cpu'];
  if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
  if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
  if (reference && release) {
    if (rpm_check(release:release, sp:sp, cpu:cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
  }
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'kernel-rt / kernel-rt-core / kernel-rt-debug / kernel-rt-debug-core / etc');
}

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

Linux / Unix:
/opt/nessus/lib/nessus/plugins/centos8_RHSA-2021-4140.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\centos8_RHSA-2021-4140.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/centos8_RHSA-2021-4140.nasl

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How to Run

Here is how to run the CentOS 8 : kernel-rt (CESA-2021:4140) 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 CentOS Local Security Checks plugin family.
On the right side table select CentOS 8 : kernel-rt (CESA-2021:4140) plugin ID 155070.
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 centos8_RHSA-2021-4140.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a centos8_RHSA-2021-4140.nasl -t <IP/HOST>

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

/opt/nessus/bin/nasl -T - centos8_RHSA-2021-4140.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 centos8_RHSA-2021-4140.nasl -t <IP/HOST>

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References

RHSA | Red Hat Security Advisory:

2021:4140

IAVA | Information Assurance Vulnerability Alert:

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

See also:

Similar and related Nessus plugins:

160459 - Amazon Linux 2 : kernel (ALASKERNEL-5.10-2022-002)
160440 - Amazon Linux 2 : kernel (ALASKERNEL-5.4-2022-004)
157497 - AlmaLinux 8 : kernel (ALSA-2021:4356)
155145 - CentOS 8 : kernel (CESA-2021:4356)
153703 - EulerOS 2.0 SP9 : kernel (EulerOS-SA-2021-2530)
155142 - EulerOS 2.0 SP5 : kernel (EulerOS-SA-2021-2663)
159627 - EulerOS 2.0 SP8 : kernel (EulerOS-SA-2022-1366)
158985 - FreeBSD : FreeBSD-kernel -- Multiple WiFi issues (8d20bd48-a4f3-11ec-90de-1c697aa5a594)
155425 - Oracle Linux 8 : kernel (ELSA-2021-4356)
152382 - Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2021-9404)
152389 - Oracle Linux 7 / 8 : Unbreakable Enterprise kernel-container (ELSA-2021-9406)
153557 - Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2021-9459)
155172 - RHEL 8 : kernel-rt (RHSA-2021:4140)
155219 - RHEL 8 : kernel (RHSA-2021:4356)
149383 - KB5003169: Windows 10 version 1909 Security Update (May 2021)
149382 - KB5003171: Windows 10 version 1809 / Windows Server 2019 Security Update (May 2021)
149396 - KB5003172: Windows 10 version 1507 LTS Security Update (May 2021)
149398 - KB5003173: Windows 10 version 2004 / Windows 10 version 20H2 Security Update (May 2021)
149391 - KB5003174: Windows 10 version 1803 Security Update (May 2021)
149390 - KB5003197: Windows 10 1607 / Windows Server 2016 Security Update (May 2021)
149440 - KB5003208: Windows Server 2012 Security Update (May 2021)
149389 - KB5003210: Windows Server 2008 Security Update (May 2021)
149392 - KB5003233: Windows Server 2008 R2 Security Update (May 2021)
153127 - Ubuntu 21.04 : Linux kernel (KVM) vulnerabilities (USN-4997-2)
153131 - Ubuntu 20.04 LTS : Linux kernel (KVM) vulnerabilities (USN-5000-2)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file centos8_RHSA-2021-4140.nasl version 1.2. For more plugins, visit the Nessus Plugin Library.

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CentOS 8 : kernel-rt (CESA-2021:4140) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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