Virtuozzo 7 : readykernel-patch (VZA-2017-067)

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

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

if (description)
{
  script_id(102205);
  script_version("3.10");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");

  script_cve_id(
    "CVE-2017-11600",
    "CVE-2017-7541",
    "CVE-2017-7542"
  );

  script_name(english:"Virtuozzo 7 : readykernel-patch (VZA-2017-067)");
  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 :

  - A vulnerability was found in the handling of xfrm
    Netlink messages. A privileged user inside a container
    could cause a denial of service (kernel crash) by
    sending a crafted Netlink message with type
    XFRM_MSG_MIGRATE to the kernel.

  - Integer overflow vulnerability in ip6_find_1stfragopt()
    function was found. Local attacker that has privileges
    to open raw sockets can cause infinite loop inside
    ip6_find_1stfragopt() function.

  - Kernel memory corruption due to a buffer overflow was
    found in brcmf_cfg80211_mgmt_tx() function in Linux
    kernels from v3.9-rc1 to v4.13-rc1. The vulnerability
    can be triggered by sending a crafted NL80211_CMD_FRAME
    packet via netlink. An unprivileged local user could
    use this flaw to induce kernel memory corruption on the
    system, leading to a 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://help.virtuozzo.com/customer/portal/articles/2853433");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-15.2-27.2-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?a209e494");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-18.7-27.2-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d2ad0d84");
  # https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-20.18-27.2-1.vl7/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?61e62dd0");
  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: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:"patch_publication_date", value:"2017/08/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/08/07");

  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) 2017-2021 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-3.10.0-327.18.2.vz7.15.2",
    "patch","readykernel-patch-15.2-27.2-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-327.36.1.vz7.18.7",
    "patch","readykernel-patch-18.7-27.2-1.vl7"
  ),
  make_array(
    "kernel","vzkernel-3.10.0-327.36.1.vz7.20.18",
    "patch","readykernel-patch-20.18-27.2-1.vl7"
  )
);
readykernel_execute_checks(checks:checks, severity:SECURITY_HOLE, release:"Virtuozzo-7");