Virtuozzo 7 : readykernel-patch (VZA-2018-005)

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

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

if (description)
{
  script_id(106053);
  script_version("3.10");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");

  script_cve_id(
    "CVE-2017-18017"
  );

  script_name(english:"Virtuozzo 7 : readykernel-patch (VZA-2018-005)");
  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 :

  - If the system uses iptables and there are iptables
    rules with TCPMSS action there, a remote attacker could
    cause a denial of service (use-after-free in
    tcpmss_mangle_packet function leading to memory
    corruption) or possibly have unspecified other impact
    by sending specially crafted network packets.

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://help.virtuozzo.com/customer/portal/articles/2915393");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-30.10-42.0-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5bc1909a");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-30.15-42.0-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?0ca70a61");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-33.22-42.0-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?65ccc0cb");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-37.30-42.0-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?e02e2e8c");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-40.4-42.0-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?ed1c0dc0");
  script_set_attribute(attribute:"solution", value:"Update the readykernel patch.");
  script_set_cvss_base_vector("CVSS2#AV:N/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:N/AC:L/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:"patch_publication_date", value:"2018/01/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/01/16");

  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) 2018-2021 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.vz7.30.10",
    "patch","readykernel-patch-30.10-42.0-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-514.16.1.vz7.30.15",
    "patch","readykernel-patch-30.15-42.0-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-514.26.1.vz7.33.22",
    "patch","readykernel-patch-33.22-42.0-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-693.1.1.vz7.37.30",
    "patch","readykernel-patch-37.30-42.0-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-693.11.6.vz7.40.4",
    "patch","readykernel-patch-40.4-42.0-1.vl7"
  )
);
readykernel_execute_checks(checks:checks, severity:SECURITY_HOLE, release:"Virtuozzo-7");