EulerOS 2.0 SP10 : kernel (EulerOS-SA-2022-1243) - Nessus

Medium Plugin ID: 158416

This page contains detailed information about the EulerOS 2.0 SP10 : kernel (EulerOS-SA-2022-1243) 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: 158416
Name: EulerOS 2.0 SP10 : kernel (EulerOS-SA-2022-1243)
Filename: EulerOS_SA-2022-1243.nasl
Vulnerability Published: 2020-10-15
This Plugin Published: 2022-02-25
Last Modification Time: 2022-02-25
Plugin Version: 1.2
Plugin Type: local
Plugin Family: Huawei Local Security Checks
Dependencies: ssh_get_info.nasl
Required KB Items [?]: Host/cpu, Host/EulerOS/release, Host/EulerOS/rpm-list, Host/EulerOS/sp, Host/local_checks_enabled
Excluded KB Items: Host/EulerOS/uvp_version

Vulnerability Information

Severity: Medium
Vulnerability Published: 2020-10-15
Patch Published: 2022-02-25
CVE [?]: CVE-2020-16119, CVE-2021-0920, CVE-2021-43389, CVE-2021-43975
CPE [?]: cpe:/o:huawei:euleros:2.0, p-cpe:/a:huawei:euleros:kernel, p-cpe:/a:huawei:euleros:kernel-abi-stablelists, p-cpe:/a:huawei:euleros:kernel-tools, p-cpe:/a:huawei:euleros:kernel-tools-libs, p-cpe:/a:huawei:euleros:python3-perf

Synopsis

The remote EulerOS host is missing multiple security updates.

Description

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

- Use-after-free vulnerability in the Linux kernel exploitable by a local attacker due to reuse of a DCCP socket with an attached dccps_hc_tx_ccid object as a listener after being released. Fixed in Ubuntu Linux kernel 5.4.0-51.56, 5.3.0-68.63, 4.15.0-121.123, 4.4.0-193.224, 3.13.0.182.191 and 3.2.0-149.196. (CVE-2020-16119)

- In unix_scm_to_skb of af_unix.c, there is a possible use after free bug due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-196926917References: Upstream kernel (CVE-2021-0920)

- An issue was discovered in the Linux kernel before 5.14.15. There is an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c. (CVE-2021-43389)

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

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected kernel 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 EulerOS 2.0 SP10 : kernel (EulerOS-SA-2022-1243) vulnerability:

GitHub: https://github.com/HadarManor/Public-Vulnerabilities
[CVE-2020-16119]
GitHub: https://github.com/xairy/linux-kernel-exploitation
[CVE-2020-16119]
GitHub: https://github.com/enterprisemodules/vulnerability_demo
[CVE-2021-0920]

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-2021-0920
CVSS V2 Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C/E:U/RL:OF/RC:C

CVSS Base Score:	6.9 (Medium)
Impact Subscore:	10.0
Exploitability Subscore:	3.4
CVSS Temporal Score:	5.1 (Medium)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	5.1 (Medium)

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

CVSS Base Score:	6.4 (Medium)
Impact Subscore:	5.9
Exploitability Subscore:	0.5
CVSS Temporal Score:	5.6 (Medium)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	5.6 (Medium)

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Plugin Source

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
##

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

if (description)
{
  script_id(158416);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/02/25");

  script_cve_id(
    "CVE-2020-16119",
    "CVE-2021-0920",
    "CVE-2021-43389",
    "CVE-2021-43975"
  );

  script_name(english:"EulerOS 2.0 SP10 : kernel (EulerOS-SA-2022-1243)");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS host is missing multiple security updates.");
  script_set_attribute(attribute:"description", value:
"According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by
the following vulnerabilities :

  - Use-after-free vulnerability in the Linux kernel exploitable by a local attacker due to reuse of a DCCP
    socket with an attached dccps_hc_tx_ccid object as a listener after being released. Fixed in Ubuntu Linux
    kernel 5.4.0-51.56, 5.3.0-68.63, 4.15.0-121.123, 4.4.0-193.224, 3.13.0.182.191 and 3.2.0-149.196.
    (CVE-2020-16119)

  - In unix_scm_to_skb of af_unix.c, there is a possible use after free bug due to a race condition. This
    could lead to local escalation of privilege with System execution privileges needed. User interaction is
    not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-196926917References:
    Upstream kernel (CVE-2021-0920)

  - An issue was discovered in the Linux kernel before 5.14.15. There is an array-index-out-of-bounds flaw in
    the detach_capi_ctr function in drivers/isdn/capi/kcapi.c. (CVE-2021-43389)

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

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security
advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional
issues.");
  # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2022-1243
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?da05deca");
  script_set_attribute(attribute:"solution", value:
"Update the affected kernel packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/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:L/AC:H/PR:H/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-2021-0920");

  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:"2020/10/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/02/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/02/25");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-abi-stablelists");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-tools-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python3-perf");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Huawei 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");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/sp");
  script_exclude_keys("Host/EulerOS/uvp_version");

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

var release = get_kb_item("Host/EulerOS/release");
if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
var uvp = get_kb_item("Host/EulerOS/uvp_version");
if (release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP10");

var sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(10)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP10");

if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP10", "EulerOS UVP " + uvp);

if (!get_kb_item("Host/EulerOS/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$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("aarch64" >!< cpu) audit(AUDIT_ARCH_NOT, "aarch64", cpu);

var flag = 0;

var pkgs = [
  "kernel-4.19.90-vhulk2111.1.0.h893.eulerosv2r10",
  "kernel-abi-stablelists-4.19.90-vhulk2111.1.0.h893.eulerosv2r10",
  "kernel-tools-4.19.90-vhulk2111.1.0.h893.eulerosv2r10",
  "kernel-tools-libs-4.19.90-vhulk2111.1.0.h893.eulerosv2r10",
  "python3-perf-4.19.90-vhulk2111.1.0.h893.eulerosv2r10"
];

foreach (var pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"10", reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    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");
}

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

Linux / Unix:
/opt/nessus/lib/nessus/plugins/EulerOS_SA-2022-1243.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\EulerOS_SA-2022-1243.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/EulerOS_SA-2022-1243.nasl

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How to Run

Here is how to run the EulerOS 2.0 SP10 : kernel (EulerOS-SA-2022-1243) 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 Huawei Local Security Checks plugin family.
On the right side table select EulerOS 2.0 SP10 : kernel (EulerOS-SA-2022-1243) plugin ID 158416.
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 EulerOS_SA-2022-1243.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a EulerOS_SA-2022-1243.nasl -t <IP/HOST>

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

/opt/nessus/bin/nasl -T - EulerOS_SA-2022-1243.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 EulerOS_SA-2022-1243.nasl -t <IP/HOST>

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References

See also:

Similar and related Nessus plugins:

157463 - Ubuntu 20.04 LTS : Linux kernel (OEM) vulnerabilities (USN-5278-1)
157889 - openSUSE 15 Security Update : kernel (openSUSE-SU-2022:0366-1)
157894 - SUSE SLES15 Security Update : kernel (SUSE-SU-2022:0366-1)
157895 - SUSE SLES15 Security Update : kernel (SUSE-SU-2022:0367-1)
157939 - SUSE SLES12 Security Update : kernel (SUSE-SU-2022:0371-1)
158159 - Ubuntu 20.04 LTS : Linux kernel vulnerabilities (USN-5294-1)
158248 - RHEL 8 : kpatch-patch (RHSA-2022:0590)
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)
158260 - RHEL 7 : kpatch-patch (RHSA-2022:0592)
158264 - RHEL 7 : kernel-rt (RHSA-2022:0622)
158266 - RHEL 7 : kernel (RHSA-2022:0620)
158268 - Oracle Linux 7 : kernel (ELSA-2022-0620)
158323 - RHEL 8 : kernel-rt (RHSA-2022:0629)
158330 - Scientific Linux Security Update : kernel on SL7.x x86_64 (2022:0620)
158347 - RHEL 8 : kernel (RHSA-2022:0636)
158387 - EulerOS 2.0 SP10 : kernel (EulerOS-SA-2022-1255)
158438 - CentOS 7 : kernel (CESA-2022:0620)
158472 - EulerOS 2.0 SP5 : kernel (EulerOS-SA-2022-1271)
158503 - SUSE SLES12 / SLES15 Security Update : kernel (Live Patch 23 for SLE 12 SP4) (SUSE-SU-2022:0647-1)
158524 - EulerOS 2.0 SP9 : kernel (EulerOS-SA-2022-1292)
158543 - EulerOS 2.0 SP9 : kernel (EulerOS-SA-2022-1308)
158569 - SUSE SLES12 / SLES15 Security Update : kernel (Live Patch 21 for SLE 12 SP4) (SUSE-SU-2022:0667-1)
158579 - SUSE SLES12 Security Update : kernel (Live Patch 42 for SLE 12 SP3) (SUSE-SU-2022:0668-1)
158727 - RHEL 8 : kpatch-patch (RHSA-2022:0772)
158735 - RHEL 8 : kernel-rt (RHSA-2022:0771)
158736 - RHEL 8 : kernel (RHSA-2022:0777)
158748 - SUSE SLES12 Security Update : kernel (SUSE-SU-2022:0762-1)
158756 - SUSE SLES12 Security Update : kernel (SUSE-SU-2022:0756-1)
158761 - Debian DSA-5096-1 : linux - security update
158794 - Oracle Linux 8 : kernel (ELSA-2022-0825)
158805 - RHEL 8 : kernel (RHSA-2022:0823)
158808 - RHEL 8 : kernel-rt (RHSA-2022:0819)
158822 - RHEL 8 : kernel (RHSA-2022:0825)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file EulerOS_SA-2022-1243.nasl version 1.2. For more plugins, visit the Nessus Plugin Library.

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EulerOS 2.0 SP10 : kernel (EulerOS-SA-2022-1243) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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