Vulnerabilities > CVE-2019-3840 - NULL Pointer Dereference vulnerability in multiple products

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

include("compat.inc");

if (description)
{
  script_id(126852);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/04");

  script_cve_id(
    "CVE-2019-10161",
    "CVE-2019-10167",
    "CVE-2019-3840"
  );

  script_name(english:"EulerOS 2.0 SP2 : libvirt (EulerOS-SA-2019-1724)");
  script_summary(english:"Checks the rpm output for the updated packages.");

  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 libvirt packages installed, the
EulerOS installation on the remote host is affected by the following
vulnerabilities :

  - libvirt: arbitrary file read/exec via
    virDomainSaveImageGetXMLDesc API (CVE-2019-10161)

  - libvirt: arbitrary command execution via
    virConnectGetDomainCapabilities API (CVE-2019-10167)

  - libvirt: NULL pointer dereference after running
    qemuAgentCommand in qemuAgentGetInterfaces
    function(CVE-2019-3840)

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-2019-1724
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d1920901");
  script_set_attribute(attribute:"solution", value:
"Update the affected libvirt 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:U/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: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:"2019/07/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/07/22");

  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-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-lxc");
  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-kvm");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros: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) 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/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);

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

sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(2)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP2");

uvp = get_kb_item("Host/EulerOS/uvp_version");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP2", "EulerOS UVP " + uvp);

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-2.0.0-10.10.h3",
        "libvirt-client-2.0.0-10.10.h3",
        "libvirt-daemon-2.0.0-10.10.h3",
        "libvirt-daemon-config-network-2.0.0-10.10.h3",
        "libvirt-daemon-config-nwfilter-2.0.0-10.10.h3",
        "libvirt-daemon-driver-interface-2.0.0-10.10.h3",
        "libvirt-daemon-driver-lxc-2.0.0-10.10.h3",
        "libvirt-daemon-driver-network-2.0.0-10.10.h3",
        "libvirt-daemon-driver-nodedev-2.0.0-10.10.h3",
        "libvirt-daemon-driver-nwfilter-2.0.0-10.10.h3",
        "libvirt-daemon-driver-qemu-2.0.0-10.10.h3",
        "libvirt-daemon-driver-secret-2.0.0-10.10.h3",
        "libvirt-daemon-driver-storage-2.0.0-10.10.h3",
        "libvirt-daemon-kvm-2.0.0-10.10.h3"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"2", 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");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2019:2294 and 
# CentOS Errata and Security Advisory 2019:2294 respectively.
#

include("compat.inc");

if (description)
{
  script_id(128386);
  script_version("1.3");
  script_cvs_date("Date: 2019/12/31");

  script_cve_id("CVE-2019-3840");
  script_xref(name:"RHSA", value:"2019:2294");

  script_name(english:"CentOS 7 : libvirt (CESA-2019:2294)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote CentOS host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"An update for libvirt is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security
impact of Moderate. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available for each
vulnerability from the CVE link(s) in the References section.

The libvirt library contains a C API for managing and interacting with
the virtualization capabilities of Linux and other operating systems.
In addition, libvirt provides tools for remote management of
virtualized systems.

Security Fix(es) :

* libvirt: NULL pointer dereference after running qemuAgentCommand in
qemuAgentGetInterfaces function (CVE-2019-3840)

For more details about the security issue(s), including the impact, a
CVSS score, acknowledgments, and other related information, refer to
the CVE page(s) listed in the References section.

Additional Changes :

For detailed information on changes in this release, see the Red Hat
Enterprise Linux 7.7 Release Notes linked from the References section."
  );
  # https://lists.centos.org/pipermail/centos-cr-announce/2019-August/005972.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?6a3a9f8f"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected libvirt packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:S/C:N/I:N/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:L/UI:N/S:C/C:N/I:N/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-2019-3840");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-admin");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-bash-completion");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-client");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-config-network");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-config-nwfilter");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-interface");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-lxc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-network");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-nodedev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-nwfilter");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-qemu");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-secret");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-storage");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-disk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-gluster");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-iscsi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-logical");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-mpath");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-rbd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-scsi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-lxc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-docs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-lock-sanlock");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-login-shell");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-nss");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:7");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/03/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/08/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/08/30");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"CentOS Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/rpm-list");

  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/CentOS/release");
if (isnull(release) || "CentOS" >!< release) audit(AUDIT_OS_NOT, "CentOS");
os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "CentOS");
os_ver = os_ver[1];
if (! preg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 7.x", "CentOS " + os_ver);

if (!get_kb_item("Host/CentOS/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$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "CentOS", cpu);


flag = 0;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-admin-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-bash-completion-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-client-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-config-network-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-config-nwfilter-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-interface-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-lxc-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-network-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-nodedev-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-nwfilter-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-qemu-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-secret-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-core-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-disk-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-gluster-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-iscsi-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-logical-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-mpath-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-rbd-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-scsi-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-kvm-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-lxc-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-devel-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-docs-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-libs-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-lock-sanlock-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-login-shell-4.5.0-23.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-nss-4.5.0-23.el7")) flag++;


if (flag)
{
  cr_plugin_caveat = '\n' +
    'NOTE: The security advisory associated with this vulnerability has a\n' +
    'fixed package version that may only be available in the continuous\n' +
    'release (CR) repository for CentOS, until it is present in the next\n' +
    'point release of CentOS.\n\n' +

    'If an equal or higher package level does not exist in the baseline\n' +
    'repository for your major version of CentOS, then updates from the CR\n' +
    'repository will need to be applied in order to address the\n' +
    'vulnerability.\n';
  security_report_v4(
    port       : 0,
    severity   : SECURITY_NOTE,
    extra      : rpm_report_get() + cr_plugin_caveat
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libvirt / libvirt-admin / libvirt-bash-completion / libvirt-client / etc");
}