OracleVM 3.4 : kernel-uek (OVMSA-2022-0007) - Nessus

High Plugin ID: 158127

This page contains detailed information about the OracleVM 3.4 : kernel-uek (OVMSA-2022-0007) 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: 158127
Name: OracleVM 3.4 : kernel-uek (OVMSA-2022-0007)
Filename: oraclevm_OVMSA-2022-0007.nasl
Vulnerability Published: 2021-01-11
This Plugin Published: 2022-02-17
Last Modification Time: 2022-03-31
Plugin Version: 1.5
Plugin Type: local
Plugin Family: OracleVM Local Security Checks
Dependencies: linux_alt_patch_detect.nasl, ssh_get_info.nasl
Required KB Items [?]: Host/local_checks_enabled, Host/OracleVM/release, Host/OracleVM/rpm-list

Vulnerability Information

Severity: High
Vulnerability Published: 2021-01-11
Patch Published: 2022-02-01
CVE [?]: CVE-2021-0129, CVE-2021-1048, CVE-2021-3752, CVE-2021-3753, CVE-2021-4155, CVE-2021-20321
CPE [?]: cpe:/o:oracle:vm_server:3.4, p-cpe:/a:oracle:vm:kernel-uek, p-cpe:/a:oracle:vm:kernel-uek-firmware

Synopsis

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

Description

The remote OracleVM system is missing necessary patches to address security updates:

- Improper access control in BlueZ may allow an authenticated user to potentially enable information disclosure via adjacent access. (CVE-2021-0129)

- In ep_loop_check_proc of eventpoll.c, there is a possible way to corrupt memory due to a use after free. 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-204573007References: Upstream kernel (CVE-2021-1048)

- A race condition accessing file object in the Linux kernel OverlayFS subsystem was found in the way users do rename in specific way with OverlayFS. A local user could use this flaw to crash the system. (CVE-2021-20321)

- A use-after-free flaw was found in the Linux kernel's Bluetooth subsystem in the way user calls connect to the socket and disconnect simultaneously due to a race condition. This flaw allows a user to crash the system or escalate their privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-3752)

- A race problem was seen in the vt_k_ioctl in drivers/tty/vt/vt_ioctl.c in the Linux kernel, which may cause an out of bounds read in vt as the write access to vc_mode is not protected by lock-in vt_ioctl (KDSETMDE). The highest threat from this vulnerability is to data confidentiality. (CVE-2021-3753)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected kernel-uek / kernel-uek-firmware 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 OracleVM 3.4 : kernel-uek (OVMSA-2022-0007) vulnerability:

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-2021-1048]

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-2021-3752
CVSS V2 Vector: AV:A/AC:M/Au:N/C:C/I:C/A:C/E:U/RL:OF/RC:C

CVSS Base Score:	7.9 (High)
Impact Subscore:	10.0
Exploitability Subscore:	5.5
CVSS Temporal Score:	5.8 (Medium)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	5.8 (Medium)

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

CVSS Base Score:	7.1 (High)
Impact Subscore:	5.9
Exploitability Subscore:	1.2
CVSS Temporal Score:	6.2 (Medium)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	6.2 (Medium)

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Plugin Source

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were
# extracted from OracleVM Security Advisory OVMSA-2022-0007.
##

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

if (description)
{
  script_id(158127);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/03/31");

  script_cve_id(
    "CVE-2021-0129",
    "CVE-2021-1048",
    "CVE-2021-3752",
    "CVE-2021-3753",
    "CVE-2021-4155",
    "CVE-2021-20321"
  );

  script_name(english:"OracleVM 3.4 : kernel-uek (OVMSA-2022-0007)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OracleVM host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote OracleVM system is missing necessary patches to address security updates:

  - Improper access control in BlueZ may allow an authenticated user to potentially enable information
    disclosure via adjacent access. (CVE-2021-0129)

  - In ep_loop_check_proc of eventpoll.c, there is a possible way to corrupt memory due to a use after free.
    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-204573007References: Upstream kernel (CVE-2021-1048)

  - A race condition accessing file object in the Linux kernel OverlayFS subsystem was found in the way users
    do rename in specific way with OverlayFS. A local user could use this flaw to crash the system.
    (CVE-2021-20321)

  - A use-after-free flaw was found in the Linux kernel's Bluetooth subsystem in the way user calls connect to
    the socket and disconnect simultaneously due to a race condition. This flaw allows a user to crash the
    system or escalate their privileges. The highest threat from this vulnerability is to confidentiality,
    integrity, as well as system availability. (CVE-2021-3752)

  - A race problem was seen in the vt_k_ioctl in drivers/tty/vt/vt_ioctl.c in the Linux kernel, which may
    cause an out of bounds read in vt as the write access to vc_mode is not protected by lock-in vt_ioctl
    (KDSETMDE). The highest threat from this vulnerability is to data confidentiality. (CVE-2021-3753)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://linux.oracle.com/cve/CVE-2021-0129.html");
  script_set_attribute(attribute:"see_also", value:"https://linux.oracle.com/cve/CVE-2021-1048.html");
  script_set_attribute(attribute:"see_also", value:"https://linux.oracle.com/cve/CVE-2021-20321.html");
  script_set_attribute(attribute:"see_also", value:"https://linux.oracle.com/cve/CVE-2021-3752.html");
  script_set_attribute(attribute:"see_also", value:"https://linux.oracle.com/cve/CVE-2021-3753.html");
  script_set_attribute(attribute:"see_also", value:"https://linux.oracle.com/cve/CVE-2021-4155.html");
  script_set_attribute(attribute:"see_also", value:"https://linux.oracle.com/errata/OVMSA-2022-0007.html");
  script_set_attribute(attribute:"solution", value:
"Update the affected kernel-uek / kernel-uek-firmware packages.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:M/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:A/AC:H/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-2021-3752");

  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:"2021/01/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/02/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/02/17");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:vm:kernel-uek");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:vm:kernel-uek-firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:vm_server:3.4");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"OracleVM 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/OracleVM/release", "Host/OracleVM/rpm-list");

  exit(0);
}
include('ksplice.inc');
include('rpm.inc');

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var release = get_kb_item("Host/OracleVM/release");
if (isnull(release) || "OVS" >!< release) audit(AUDIT_OS_NOT, "OracleVM");
if (! preg(pattern:"^OVS" + "3\.4" + "(\.[0-9]|$)", string:release)) audit(AUDIT_OS_NOT, "OracleVM 3.4", "OracleVM " + release);
if (!get_kb_item("Host/OracleVM/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$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "OracleVM", cpu);
if ("x86_64" >!< cpu) audit(AUDIT_ARCH_NOT, "x86_64", cpu);

var machine_uptrack_level = get_one_kb_item('Host/uptrack-uname-r');
if (machine_uptrack_level)
{
  var trimmed_uptrack_level = ereg_replace(string:machine_uptrack_level, pattern:"\.(x86_64|i[3-6]86|aarch64)$", replace:'');
  var fixed_uptrack_levels = ['4.1.12-124.60.1.el6uek'];
  foreach var fixed_uptrack_level ( fixed_uptrack_levels ) {
    if (rpm_spec_vers_cmp(a:trimmed_uptrack_level, b:fixed_uptrack_level) >= 0)
    {
      audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for OVMSA-2022-0007');
    }
  }
  __rpm_report = 'Running KSplice level of ' + trimmed_uptrack_level + ' does not meet the minimum fixed level of ' + join(fixed_uptrack_levels, sep:' / ') + ' for this advisory.\n\n';
}

var kernel_major_minor = get_kb_item('Host/uname/major_minor');
if (empty_or_null(kernel_major_minor)) exit(1, 'Unable to determine kernel major-minor level.');
var expected_kernel_major_minor = '4.1';
if (kernel_major_minor != expected_kernel_major_minor)
  audit(AUDIT_OS_NOT, 'running kernel level ' + expected_kernel_major_minor + ', it is running kernel level ' + kernel_major_minor);

var pkgs = [
    {'reference':'kernel-uek-4.1.12-124.60.1.el6uek', 'cpu':'x86_64', 'release':'3.4', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-4.1.12'},
    {'reference':'kernel-uek-firmware-4.1.12-124.60.1.el6uek', 'cpu':'x86_64', 'release':'3.4', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-firmware-4.1.12'}
];

var flag = 0;
foreach var 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;
  var exists_check = NULL;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) release = 'OVS' + 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 (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
  if (reference && release && (!exists_check || rpm_exists(release:release, rpm:exists_check))) {
    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-uek / kernel-uek-firmware');
}

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

Linux / Unix:
/opt/nessus/lib/nessus/plugins/oraclevm_OVMSA-2022-0007.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\oraclevm_OVMSA-2022-0007.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/oraclevm_OVMSA-2022-0007.nasl

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How to Run

Here is how to run the OracleVM 3.4 : kernel-uek (OVMSA-2022-0007) 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 OracleVM Local Security Checks plugin family.
On the right side table select OracleVM 3.4 : kernel-uek (OVMSA-2022-0007) plugin ID 158127.
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 oraclevm_OVMSA-2022-0007.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a oraclevm_OVMSA-2022-0007.nasl -t <IP/HOST>

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

/opt/nessus/bin/nasl -T - oraclevm_OVMSA-2022-0007.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 oraclevm_OVMSA-2022-0007.nasl -t <IP/HOST>

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References

See also:

Similar and related Nessus plugins:

157352 - Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-5268-1)
157353 - Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-5267-1)
157408 - Amazon Linux 2 : kernel (ALAS-2022-1749)
157410 - Amazon Linux AMI : kernel (ALAS-2022-1563)
157463 - Ubuntu 20.04 LTS : Linux kernel (OEM) vulnerabilities (USN-5278-1)
157497 - AlmaLinux 8 : kernel (ALSA-2021:4356)
157796 - Rocky Linux 8 : kernel-rt (RLSA-2022:176)
157815 - Rocky Linux 8 : kernel (RLSA-2021:4356)
157819 - Rocky Linux 8 : kernel (RLSA-2022:188)
157820 - Rocky Linux 8 : kernel-rt (RLSA-2021:4140)
157900 - SUSE SLES12 Security Update : kernel (SUSE-SU-2022:0362-1)
158016 - EulerOS Virtualization 3.0.6.0 : kernel (EulerOS-SA-2022-1070)
158040 - EulerOS Virtualization 3.0.6.6 : kernel (EulerOS-SA-2022-1155)
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)
158125 - Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel (Raspberry Pi) vulnerabilities (USN-5267-3)
158152 - SUSE SLES12 Security Update : kernel (SUSE-SU-2022:0477-1)
158159 - Ubuntu 20.04 LTS : Linux kernel vulnerabilities (USN-5294-1)
158248 - RHEL 8 : kpatch-patch (RHSA-2022:0590)
158249 - Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-5298-1)
158250 - Ubuntu 20.04 LTS : Linux kernel (GKE) vulnerabilities (USN-5297-1)
158253 - Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-5294-2)
158254 - Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-5299-1)
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)
158288 - EulerOS 2.0 SP3 : kernel (EulerOS-SA-2022-1171)
158323 - RHEL 8 : kernel-rt (RHSA-2022:0629)
158330 - Scientific Linux Security Update : kernel on SL7.x x86_64 (2022:0620)
158347 - RHEL 8 : kernel (RHSA-2022:0636)
158396 - EulerOS 2.0 SP10 : kernel (EulerOS-SA-2022-1208)
158438 - CentOS 7 : kernel (CESA-2022:0620)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file oraclevm_OVMSA-2022-0007.nasl version 1.5. For more plugins, visit the Nessus Plugin Library.

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OracleVM 3.4 : kernel-uek (OVMSA-2022-0007) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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