Virtuozzo 7 : readykernel-patch (VZA-2018-089)

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

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

if (description)
{
  script_id(121104);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");

  script_cve_id(
    "CVE-2018-16884"
  );

  script_name(english:"Virtuozzo 7 : readykernel-patch (VZA-2018-089)");
  script_summary(english:"Checks the readykernel output for the updated patch.");

  script_set_attribute(attribute:"synopsis", value:
"The remote Virtuozzo host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"According to the version of the vzkernel package and the
readykernel-patch installed, the Virtuozzo installation on the remote
host is affected by the following vulnerability :

  - A flaw was found in the implementation of NFS v4.1 in
    the Linux kernel. NFS v4.1 shares mounted in different
    network namespaces at the same time can make
    bc_svc_process() use wrong back-channel ID and cause a
    use-after-free. A malicious user in a container can
    exploit this to cause a host kernel memory corruption
    and a system crash.

Note that Tenable Network Security has extracted the preceding
description block directly from the Virtuozzo security advisory.
Tenable has attempted to automatically clean and format it as much as
possible without introducing additional issues.");
  script_set_attribute(attribute:"see_also", value:"https://virtuozzosupport.force.com/s/article/VZA-2018-089");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1660375");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-30.15-69.0-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?52c2fd4e");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-33.22-69.0-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?2b6c96d0");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-37.30-69.0-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?a9857379");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-40.4-69.0-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?fc658451");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-43.10-69.0-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?a8363769");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-46.7-69.0-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?bf006ad4");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-48.2-69.0-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?ce09ee33");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-63.3-69.0-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?1559e566");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-64.7-69.0-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?2182bedd");
  script_set_attribute(attribute:"solution", value:"Update the readykernel patch.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:S/C:P/I:P/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: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:"2018/12/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/01/11");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:virtuozzo:virtuozzo:readykernel");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:virtuozzo:virtuozzo:7");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Virtuozzo Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2019-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}

include("global_settings.inc");
include("readykernel.inc");

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

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

if (!get_kb_item("Host/Virtuozzo/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, "Virtuozzo", cpu);

rk_info = get_kb_item("Host/readykernel-info");
if (empty_or_null(rk_info)) audit(AUDIT_UNKNOWN_APP_VER, "Virtuozzo");

checks = make_list2(
  make_array(
    "kernel","vzkernel-3.10.0-514.16.1.vz7.30.15",
    "patch","readykernel-patch-30.15-69.0-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-514.26.1.vz7.33.22",
    "patch","readykernel-patch-33.22-69.0-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-693.1.1.vz7.37.30",
    "patch","readykernel-patch-37.30-69.0-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-693.11.6.vz7.40.4",
    "patch","readykernel-patch-40.4-69.0-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-693.17.1.vz7.43.10",
    "patch","readykernel-patch-43.10-69.0-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-693.21.1.vz7.46.7",
    "patch","readykernel-patch-46.7-69.0-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-693.21.1.vz7.48.2",
    "patch","readykernel-patch-48.2-69.0-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-862.9.1.vz7.63.3",
    "patch","readykernel-patch-63.3-69.0-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-862.11.6.vz7.64.7",
    "patch","readykernel-patch-64.7-69.0-1.vl7"
  )
);
readykernel_execute_checks(checks:checks, severity:SECURITY_WARNING, release:"Virtuozzo-7");