SUSE SLES15 Security Update : the Linux RT Kernel (SUSE-SU-2022:0543-1) - Nessus

High Plugin ID: 158225

This page contains detailed information about the SUSE SLES15 Security Update : the Linux RT Kernel (SUSE-SU-2022:0543-1) 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: 158225
Name: SUSE SLES15 Security Update : the Linux RT Kernel (SUSE-SU-2022:0543-1)
Filename: suse_SU-2022-0543-1.nasl
Vulnerability Published: 2021-06-24
This Plugin Published: 2022-02-22
Last Modification Time: 2022-04-22
Plugin Version: 1.3
Plugin Type: local
Plugin Family: SuSE Local Security Checks
Dependencies: linux_alt_patch_detect.nasl, ssh_get_info.nasl
Required KB Items [?]: Host/cpu, Host/local_checks_enabled, Host/SuSE/release, Host/SuSE/rpm-list

Vulnerability Information

Synopsis

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

Description

The remote SUSE Linux SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:0543-1 advisory.

- The vgacon subsystem in the Linux kernel before 5.8.10 mishandles software scrollback. There is a vgacon_scrolldelta out-of-bounds read, aka CID-973c096f6a85. (CVE-2020-28097)

- A double free bug in packet_set_ring() in net/packet/af_packet.c can be exploited by a local user through crafted syscalls to escalate privileges or deny service. We recommend upgrading kernel past the effected versions or rebuilding past ec6af094ea28f0f2dda1a6a33b14cd57e36a9755 (CVE-2021-22600)

- In gadget_dev_desc_UDC_show of configfs.c, there is a possible disclosure of kernel heap memory due to a race condition. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-160822094References: Upstream kernel (CVE-2021-39648)

- In ufshcd_eh_device_reset_handler of ufshcd.c, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-194696049References: Upstream kernel (CVE-2021-39657)

- pep_sock_accept in net/phonet/pep.c in the Linux kernel through 5.15.8 has a refcount leak. (CVE-2021-45095)

- A flaw was found in the Linux kernel. A null pointer dereference in bond_ipsec_add_sa() may lead to local denial of service. (CVE-2022-0286)

- 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) (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 SUSE SLES15 Security Update : the Linux RT Kernel (SUSE-SU-2022:0543-1) 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: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)

Go back to menu.

Plugin Source

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
#
# The package checks in this plugin were extracted from
# SUSE update advisory SUSE-SU-2022:0543-1. The text itself
# is copyright (C) SUSE.
##

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

if (description)
{
  script_id(158225);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/22");

  script_cve_id(
    "CVE-2020-28097",
    "CVE-2021-22600",
    "CVE-2021-39648",
    "CVE-2021-39657",
    "CVE-2021-39685",
    "CVE-2021-45095",
    "CVE-2022-0286",
    "CVE-2022-0330",
    "CVE-2022-22942"
  );
  script_xref(name:"SuSE", value:"SUSE-SU-2022:0543-1");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/05/02");

  script_name(english:"SUSE SLES15 Security Update : the Linux RT Kernel (SUSE-SU-2022:0543-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote SUSE host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote SUSE Linux SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in
the SUSE-SU-2022:0543-1 advisory.

  - The vgacon subsystem in the Linux kernel before 5.8.10 mishandles software scrollback. There is a
    vgacon_scrolldelta out-of-bounds read, aka CID-973c096f6a85. (CVE-2020-28097)

  - A double free bug in packet_set_ring() in net/packet/af_packet.c can be exploited by a local user through
    crafted syscalls to escalate privileges or deny service. We recommend upgrading kernel past the effected
    versions or rebuilding past ec6af094ea28f0f2dda1a6a33b14cd57e36a9755 (CVE-2021-22600)

  - In gadget_dev_desc_UDC_show of configfs.c, there is a possible disclosure of kernel heap memory due to a
    race condition. This could lead to local information disclosure with System execution privileges needed.
    User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID:
    A-160822094References: Upstream kernel (CVE-2021-39648)

  - In ufshcd_eh_device_reset_handler of ufshcd.c, there is a possible out of bounds read due to a missing
    bounds check. This could lead to local information disclosure with System execution privileges needed.
    User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID:
    A-194696049References: Upstream kernel (CVE-2021-39657)

  - pep_sock_accept in net/phonet/pep.c in the Linux kernel through 5.15.8 has a refcount leak.
    (CVE-2021-45095)

  - A flaw was found in the Linux kernel. A null pointer dereference in bond_ipsec_add_sa() may lead to local
    denial of service. (CVE-2022-0286)

  - 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) (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://bugzilla.suse.com/1154353");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1154488");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1156395");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1160634");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1176447");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1177599");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1183405");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1185377");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1187428");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1187723");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188605");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1191881");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1193096");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1193506");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1193802");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1193861");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1193864");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1193867");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1194048");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1194227");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1194291");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1194880");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1195009");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1195065");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1195073");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1195183");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1195184");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1195254");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1195267");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1195293");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1195371");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1195476");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1195477");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1195478");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1195479");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1195480");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1195481");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1195482");
  # https://lists.suse.com/pipermail/sle-security-updates/2022-February/010282.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?692365a1");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-28097");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-22600");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-39648");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-39657");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-39685");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-45095");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-0286");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-0330");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-22942");
  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-2021-39685");

  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:"2021/06/24");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/02/21");
  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:"p-cpe:/a:novell:suse_linux:cluster-md-kmp-rt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:dlm-kmp-rt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:gfs2-kmp-rt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-devel-rt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-rt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-rt-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-rt_debug-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-source-rt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-syms-rt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:ocfs2-kmp-rt");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:15");
  script_end_attributes();

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

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

  exit(0);
}


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

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var release = get_kb_item("Host/SuSE/release");
if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
var os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'SUSE');
os_ver = os_ver[1];
if (! preg(pattern:"^(SLES15)$", string:os_ver)) audit(AUDIT_OS_NOT, 'SUSE SLES15', 'SUSE ' + os_ver);

if (!get_kb_item("Host/SuSE/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, 'SUSE ' + os_ver, cpu);

var sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES15" && (! preg(pattern:"^(3)$", string:sp))) audit(AUDIT_OS_NOT, "SLES15 SP3", os_ver + " SP" + sp);

var pkgs = [
    {'reference':'cluster-md-kmp-rt-5.3.18-150300.76.1', 'sp':'3', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-rt-release-15.3'},
    {'reference':'dlm-kmp-rt-5.3.18-150300.76.1', 'sp':'3', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-rt-release-15.3'},
    {'reference':'gfs2-kmp-rt-5.3.18-150300.76.1', 'sp':'3', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-rt-release-15.3'},
    {'reference':'kernel-devel-rt-5.3.18-150300.76.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-rt-release-15.3'},
    {'reference':'kernel-rt-5.3.18-150300.76.1', 'sp':'3', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-rt-release-15.3'},
    {'reference':'kernel-rt-devel-5.3.18-150300.76.1', 'sp':'3', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-rt-release-15.3'},
    {'reference':'kernel-rt_debug-devel-5.3.18-150300.76.1', 'sp':'3', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-rt-release-15.3'},
    {'reference':'kernel-source-rt-5.3.18-150300.76.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-rt-release-15.3'},
    {'reference':'kernel-syms-rt-5.3.18-150300.76.1', 'sp':'3', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-rt-release-15.3'},
    {'reference':'ocfs2-kmp-rt-5.3.18-150300.76.1', 'sp':'3', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-rt-release-15.3'}
];

var ltss_caveat_required = FALSE;
var flag = 0;
foreach package_array ( pkgs ) {
  var reference = NULL;
  var release = NULL;
  var sp = NULL;
  var cpu = NULL;
  var exists_check = NULL;
  var rpm_spec_vers_cmp = NULL;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) release = 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['exists_check'])) exists_check = package_array['exists_check'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (reference && release) {
    if (exists_check) {
      if (!rpm_exists(release:release, rpm:exists_check)) continue;
      if ('ltss' >< tolower(exists_check)) ltss_caveat_required = TRUE;
    }
    if (rpm_check(release:release, sp:sp, cpu:cpu, reference:reference, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) 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, 'cluster-md-kmp-rt / dlm-kmp-rt / gfs2-kmp-rt / kernel-devel-rt / etc');
}

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

Linux / Unix:
/opt/nessus/lib/nessus/plugins/suse_SU-2022-0543-1.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\suse_SU-2022-0543-1.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/suse_SU-2022-0543-1.nasl

Go back to menu.

How to Run

Here is how to run the SUSE SLES15 Security Update : the Linux RT Kernel (SUSE-SU-2022:0543-1) 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 SuSE Local Security Checks plugin family.
On the right side table select SUSE SLES15 Security Update : the Linux RT Kernel (SUSE-SU-2022:0543-1) plugin ID 158225.
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 suse_SU-2022-0543-1.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a suse_SU-2022-0543-1.nasl -t <IP/HOST>

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

/opt/nessus/bin/nasl -T - suse_SU-2022-0543-1.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 suse_SU-2022-0543-1.nasl -t <IP/HOST>

Go back to menu.

References

SuSE Security Advisory:

SUSE-SU-2022:0543-1

See also:

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Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
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SUSE SLES15 Security Update : the Linux RT Kernel (SUSE-SU-2022:0543-1) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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