EulerOS Virtualization 3.0.1.0 : libvirt (EulerOS-SA-2019-1456)

2019-05-14T00:00:00
ID EULEROS_SA-2019-1456.NASL
Type nessus
Reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-02-02T00:00:00

Description

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

  • util/virlog.c in libvirt does not properly determine the hostname on LXC container startup, which allows local guest OS users to bypass an intended container protection mechanism and execute arbitrary commands via a crafted NSS module.(CVE-2018-6764)

  • qemu/qemu_monitor.c in libvirt allows attackers to cause a denial of service (memory consumption) via a large QEMU reply.(CVE-2018-5748)

  • libvirt version 2.3.0 and later is vulnerable to a bad default configuration of

                                        
                                            #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(124959);
  script_version("1.4");
  script_cvs_date("Date: 2020/01/17");

  script_cve_id(
    "CVE-2017-1000256",
    "CVE-2018-1064",
    "CVE-2018-5748",
    "CVE-2018-6764",
    "CVE-2019-3840"
  );

  script_name(english:"EulerOS Virtualization 3.0.1.0 : libvirt (EulerOS-SA-2019-1456)");
  script_summary(english:"Checks the rpm output for the updated packages.");

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

  - util/virlog.c in libvirt does not properly determine
    the hostname on LXC container startup, which allows
    local guest OS users to bypass an intended container
    protection mechanism and execute arbitrary commands via
    a crafted NSS module.(CVE-2018-6764)

  - qemu/qemu_monitor.c in libvirt allows attackers to
    cause a denial of service (memory consumption) via a
    large QEMU reply.(CVE-2018-5748)

  - libvirt version 2.3.0 and later is vulnerable to a bad
    default configuration of 'verify-peer=no' passed to
    QEMU by libvirt resulting in a failure to validate
    SSL/TLS certificates by default. (CVE-2019-3840)

  - libvirt version 2.3.0 and later is vulnerable to a bad
    default configuration of 'verify-peer=no' passed to
    QEMU by libvirt resulting in a failure to validate
    SSL/TLS certificates by default.(CVE-2017-1000256)

  - An incomplete fix for CVE-2018-5748 that affects QEMU
    monitor leading to a resource exhaustion but now also
    triggered via QEMU guest agent.(CVE-2018-1064)

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-2019-1456
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3b8443dc");
  script_set_attribute(attribute:"solution", value:
"Update the affected libvirt packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/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:"2019/05/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/05/14");

  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-gluster");
  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-rbd");
  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:3.0.1.0");
  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) 2019-2020 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 != "3.0.1.0") audit(AUDIT_OS_NOT, "EulerOS Virtualization 3.0.1.0");
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$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);

flag = 0;

pkgs = ["libvirt-3.2.0-232",
        "libvirt-admin-3.2.0-232",
        "libvirt-client-3.2.0-232",
        "libvirt-daemon-3.2.0-232",
        "libvirt-daemon-config-network-3.2.0-232",
        "libvirt-daemon-config-nwfilter-3.2.0-232",
        "libvirt-daemon-driver-interface-3.2.0-232",
        "libvirt-daemon-driver-network-3.2.0-232",
        "libvirt-daemon-driver-nodedev-3.2.0-232",
        "libvirt-daemon-driver-nwfilter-3.2.0-232",
        "libvirt-daemon-driver-qemu-3.2.0-232",
        "libvirt-daemon-driver-secret-3.2.0-232",
        "libvirt-daemon-driver-storage-3.2.0-232",
        "libvirt-daemon-driver-storage-core-3.2.0-232",
        "libvirt-daemon-driver-storage-disk-3.2.0-232",
        "libvirt-daemon-driver-storage-gluster-3.2.0-232",
        "libvirt-daemon-driver-storage-iscsi-3.2.0-232",
        "libvirt-daemon-driver-storage-logical-3.2.0-232",
        "libvirt-daemon-driver-storage-mpath-3.2.0-232",
        "libvirt-daemon-driver-storage-rbd-3.2.0-232",
        "libvirt-daemon-driver-storage-scsi-3.2.0-232",
        "libvirt-daemon-kvm-3.2.0-232",
        "libvirt-devel-3.2.0-232",
        "libvirt-docs-3.2.0-232",
        "libvirt-libs-3.2.0-232"];

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

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