Virtuozzo 7 : readykernel-patch (VZA-2018-072)

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

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

if (description)
{
  script_id(121097);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");

  script_cve_id(
    "CVE-2017-1000365",
    "CVE-2018-14634"
  );

  script_name(english:"Virtuozzo 7 : readykernel-patch (VZA-2018-072)");
  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 vulnerabilities :

  - An integer overflow flaw was found in
    create_elf_tables(). An unprivileged local user with
    access to SUID (or otherwise privileged) binary could
    use this flaw to escalate their privileges on the
    system.

  - The Linux kernel imposes a size limit on the memory
    needed to store the arguments and environment variables
    of a process, 1/4 of the maximum stack size
    (RLIMIT_STACK). However, the pointers to these data
    were not taken into account, which allowed attackers to
    bypass the limit and even exhaust the stack of the
    process.

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-2018-072");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-30.10-62.2-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?25adf1ad");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-30.15-62.2-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f0832297");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-33.22-62.2-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b724d89f");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-37.30-62.2-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?60fdd754");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-40.4-62.2-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?7388d379");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-43.10-62.2-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?a2c86afd");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-46.7-62.2-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?6402c427");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-48.2-62.2-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b39b7926");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-63.3-62.2-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?bbddcc02");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-64.7-62.2-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3206b4b2");
  script_set_attribute(attribute:"solution", value:"Update the readykernel patch.");
  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:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/09/28");
  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.vz7.30.10",
    "patch","readykernel-patch-30.10-62.2-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-514.16.1.vz7.30.15",
    "patch","readykernel-patch-30.15-62.2-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-514.26.1.vz7.33.22",
    "patch","readykernel-patch-33.22-62.2-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-693.1.1.vz7.37.30",
    "patch","readykernel-patch-37.30-62.2-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-693.11.6.vz7.40.4",
    "patch","readykernel-patch-40.4-62.2-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-693.17.1.vz7.43.10",
    "patch","readykernel-patch-43.10-62.2-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-693.21.1.vz7.46.7",
    "patch","readykernel-patch-46.7-62.2-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-693.21.1.vz7.48.2",
    "patch","readykernel-patch-48.2-62.2-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-862.9.1.vz7.63.3",
    "patch","readykernel-patch-63.3-62.2-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-862.11.6.vz7.64.7",
    "patch","readykernel-patch-64.7-62.2-1.vl7"
  )
);
readykernel_execute_checks(checks:checks, severity:SECURITY_HOLE, release:"Virtuozzo-7");