Virtuozzo 7 : readykernel-patch (VZA-2020-015)

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

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

if (description)
{
  script_id(133952);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/26");

  script_cve_id("CVE-2019-15538");

  script_name(english:"Virtuozzo 7 : readykernel-patch (VZA-2020-015)");

  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 :

  - [3.10.0-862.9.1.vz7.63.3 to 3.10.0-1062.4.2.vz7.116.7]
    xfs: potential denial of service caused by missing
    unlock operation in xfs_setattr_nonsize(). It was
    discovered that xfs_setattr_nonsize() would not unlock
    'ILOCK' lock if the user or group were out of their
    disk quota. As a result, any subsequent operation,
    which needed to take 'ILOCK', would get stuck, leading
    to a denial of service.

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-2020-015");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2019-15538");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-116.7-98.0-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?859747e7");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-63.3-98.0-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?14581295");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-64.7-98.0-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?6e5a0ac5");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-73.24-98.0-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?1ca60cde");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-73.29-98.0-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?0e6efe3d");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-85.17-98.0-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?e2ad6828");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-86.2-98.0-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?060c2d8c");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-96.21-98.0-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?94b61465");
  script_set_attribute(attribute:"solution", value:
"Update the readykernel patch.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/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: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-2019-15538");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"patch_publication_date", value:"2020/02/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/02/24");

  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) 2020-2024 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-3.10.0-862.9.1.vz7.63.3",
    "patch","readykernel-patch-116.7-98.0-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-862.11.6.vz7.64.7",
    "patch","readykernel-patch-63.3-98.0-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-862.20.2.vz7.73.24",
    "patch","readykernel-patch-64.7-98.0-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-862.20.2.vz7.73.29",
    "patch","readykernel-patch-73.24-98.0-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-957.10.1.vz7.85.17",
    "patch","readykernel-patch-73.29-98.0-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-957.12.2.vz7.86.2",
    "patch","readykernel-patch-85.17-98.0-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-957.12.2.vz7.96.21",
    "patch","readykernel-patch-86.2-98.0-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-1062.4.2.vz7.116.7",
    "patch","readykernel-patch-96.21-98.0-1.vl7"
  )
);
readykernel_execute_checks(checks:checks, severity:SECURITY_HOLE, release:"Virtuozzo-7");