EulerOS Virtualization for ARM 64 3.0.2.0 : libvirt (EulerOS-SA-2021-1045) - Nessus

Medium Plugin ID: 144728

This page contains detailed information about the EulerOS Virtualization for ARM 64 3.0.2.0 : libvirt (EulerOS-SA-2021-1045) 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: 144728
Name: EulerOS Virtualization for ARM 64 3.0.2.0 : libvirt (EulerOS-SA-2021-1045)
Filename: EulerOS_SA-2021-1045.nasl
Vulnerability Published: N/A
This Plugin Published: 2021-01-05
Last Modification Time: 2021-01-11
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/uvp_version, Host/local_checks_enabled

Vulnerability Information

Synopsis

The remote EulerOS Virtualization for ARM 64 host is missing a security update.

Description

According to the version of the libvirt packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability :

- A double free memory issue was found to occur in the libvirt API, in versions before 6.8.0, responsible for requesting information about network interfaces of a running QEMU domain. This flaw affects the polkit access control driver. Specifically, clients connecting to the read-write socket with limited ACL permissions could use this flaw to crash the libvirt daemon, resulting in a denial of service, or potentially escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.(CVE-2020-25637)

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 libvirt package.

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 Virtualization for ARM 64 3.0.2.0 : libvirt (EulerOS-SA-2021-1045) vulnerability:

GitHub: https://github.com/brahmiboudjema/CVE-2020-25637-libvirt-double-free
[CVE-2020-25637: Double Free]

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 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:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

CVSS Base Score:	6.7 (Medium)
Impact Subscore:	5.9
Exploitability Subscore:	0.8
CVSS Temporal Score:	5.8 (Medium)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	5.8 (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(144728);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");

  script_cve_id(
    "CVE-2020-25637"
  );

  script_name(english:"EulerOS Virtualization for ARM 64 3.0.2.0 : libvirt (EulerOS-SA-2021-1045)");
  script_summary(english:"Checks the rpm output for the updated package.");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS Virtualization for ARM 64 host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"According to the version of the libvirt packages installed, the
EulerOS Virtualization for ARM 64 installation on the remote host is
affected by the following vulnerability :

  - A double free memory issue was found to occur in the
    libvirt API, in versions before 6.8.0, responsible for
    requesting information about network interfaces of a
    running QEMU domain. This flaw affects the polkit
    access control driver. Specifically, clients connecting
    to the read-write socket with limited ACL permissions
    could use this flaw to crash the libvirt daemon,
    resulting in a denial of service, or potentially
    escalate their privileges on the system. The highest
    threat from this vulnerability is to data
    confidentiality and integrity as well as system
    availability.(CVE-2020-25637)

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-2021-1045
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b7116a79");
  script_set_attribute(attribute:"solution", value:
"Update the affected libvirt package.");
  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: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:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"patch_publication_date", value:"2021/01/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/01/05");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-admin");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-client");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-config-network");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-config-nwfilter");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-interface");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-network");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-nodedev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-nwfilter");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-qemu");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-secret");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-storage");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-storage-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-storage-disk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-storage-iscsi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-storage-logical");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-storage-mpath");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-storage-scsi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-docs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-libs");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:3.0.2.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

release = get_kb_item("Host/EulerOS/release");
if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
uvp = get_kb_item("Host/EulerOS/uvp_version");
if (uvp != "3.0.2.0") audit(AUDIT_OS_NOT, "EulerOS Virtualization 3.0.2.0");
if (!get_kb_item("Host/EulerOS/rpm-list")) 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$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("aarch64" >!< cpu) audit(AUDIT_ARCH_NOT, "aarch64", cpu);

flag = 0;

pkgs = ["libvirt-3.2.0-286",
        "libvirt-3.2.0-286.src",
        "libvirt-admin-3.2.0-286",
        "libvirt-client-3.2.0-286",
        "libvirt-daemon-3.2.0-286",
        "libvirt-daemon-config-network-3.2.0-286",
        "libvirt-daemon-config-nwfilter-3.2.0-286",
        "libvirt-daemon-driver-interface-3.2.0-286",
        "libvirt-daemon-driver-network-3.2.0-286",
        "libvirt-daemon-driver-nodedev-3.2.0-286",
        "libvirt-daemon-driver-nwfilter-3.2.0-286",
        "libvirt-daemon-driver-qemu-3.2.0-286",
        "libvirt-daemon-driver-secret-3.2.0-286",
        "libvirt-daemon-driver-storage-3.2.0-286",
        "libvirt-daemon-driver-storage-core-3.2.0-286",
        "libvirt-daemon-driver-storage-disk-3.2.0-286",
        "libvirt-daemon-driver-storage-iscsi-3.2.0-286",
        "libvirt-daemon-driver-storage-logical-3.2.0-286",
        "libvirt-daemon-driver-storage-mpath-3.2.0-286",
        "libvirt-daemon-driver-storage-scsi-3.2.0-286",
        "libvirt-daemon-kvm-3.2.0-286",
        "libvirt-devel-3.2.0-286",
        "libvirt-docs-3.2.0-286",
        "libvirt-libs-3.2.0-286"];

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

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libvirt");
}

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-2021-1045.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\EulerOS_SA-2021-1045.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/EulerOS_SA-2021-1045.nasl

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How to Run

Here is how to run the EulerOS Virtualization for ARM 64 3.0.2.0 : libvirt (EulerOS-SA-2021-1045) 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 Virtualization for ARM 64 3.0.2.0 : libvirt (EulerOS-SA-2021-1045) plugin ID 144728.
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-2021-1045.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a EulerOS_SA-2021-1045.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-2021-1045.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-2021-1045.nasl -t <IP/HOST>

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References

See also:

Similar and related Nessus plugins:

143577 - Amazon Linux 2 : libvirt (ALAS-2020-1569)
157696 - AlmaLinux 8 : virt:rhel and virt-devel:rhel (ALSA-2021:1762)
149772 - CentOS 8 : virt:rhel and virt-devel:rhel (CESA-2021:1762)
143055 - CentOS 7 : libvirt (CESA-2020:5040)
141137 - Debian DLA-2395-1 : libvirt security update
147562 - EulerOS Virtualization 3.0.6.6 : libvirt (EulerOS-SA-2021-1456)
147104 - EulerOS Virtualization for ARM 64 3.0.6.0 : libvirt (EulerOS-SA-2021-1526)
147481 - EulerOS Virtualization 2.9.1 : libvirt (EulerOS-SA-2021-1631)
147678 - EulerOS Virtualization 2.9.0 : libvirt (EulerOS-SA-2021-1666)
142183 - openSUSE Security Update : libvirt (openSUSE-2020-1777)
142188 - openSUSE Security Update : libvirt (openSUSE-2020-1778)
142784 - Oracle Linux 7 : libvirt (ELSA-2020-5040)
146198 - Oracle Linux 7 : libvirt (ELSA-2020-5961)
155325 - Oracle Linux 8 : virt:ol / and / virt-devel:rhel (ELSA-2021-1762)
142700 - RHEL 7 : libvirt (RHSA-2020:5040)
142982 - RHEL 8 : virt:8.2 and virt-devel:8.2 (RHSA-2020:5111)
149669 - RHEL 8 : virt:rhel and virt-devel:rhel (RHSA-2021:1762)
142821 - Scientific Linux Security Update : libvirt on SL7.x i686/x86_64 (2020:5040)
143850 - SUSE SLES15 Security Update : libvirt (SUSE-SU-2020:2969-1)
143884 - SUSE SLED15 / SLES15 Security Update : libvirt (SUSE-SU-2020:2970-1)
143649 - SUSE SLED15 / SLES15 Security Update : libvirt (SUSE-SU-2020:3037-1)
143827 - SUSE SLES12 Security Update : libvirt (SUSE-SU-2020:3038-1)
143759 - SUSE SLES12 Security Update : libvirt (SUSE-SU-2020:3039-1)
143635 - SUSE SLES12 Security Update : libvirt (SUSE-SU-2020:3095-1)
143851 - SUSE SLES12 Security Update : libvirt (SUSE-SU-2020:3143-1)
160444 - Ubuntu 18.04 LTS / 20.04 LTS / 21.10 : libvirt vulnerabilities (USN-5399-1)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file EulerOS_SA-2021-1045.nasl version 1.2. For more plugins, visit the Nessus Plugin Library.

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EulerOS Virtualization for ARM 64 3.0.2.0 : libvirt (EulerOS-SA-2021-1045) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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