NewStart CGSL CORE 5.04 / MAIN 5.04 : dhcp Multiple Vulnerabilities (NS-SA-2019-0021)

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

# The descriptive text and package checks in this plugin were
# extracted from ZTE advisory NS-SA-2019-0021. The text
# itself is copyright (C) ZTE, Inc.

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

if (description)
{
  script_id(127178);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/02/25");

  script_cve_id("CVE-2017-3144", "CVE-2018-1111");

  script_name(english:"NewStart CGSL CORE 5.04 / MAIN 5.04 : dhcp Multiple Vulnerabilities (NS-SA-2019-0021)");

  script_set_attribute(attribute:"synopsis", value:
"The remote machine is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has dhcp packages installed that are affected by
multiple vulnerabilities:

  - It was found that the DHCP daemon did not properly clean
    up closed OMAPI connections in certain cases. A remote
    attacker able to connect to the OMAPI port could use
    this flaw to exhaust file descriptors in the DHCP
    daemon, leading to a denial of service in the OMAPI
    functionality. (CVE-2017-3144)

  - A command injection flaw was found in the NetworkManager
    integration script included in the DHCP client packages
    in Red Hat Enterprise Linux. A malicious DHCP server, or
    an attacker on the local network able to spoof DHCP
    responses, could use this flaw to execute arbitrary
    commands with root privileges on systems using
    NetworkManager and configured to obtain network
    configuration using the DHCP protocol. (CVE-2018-1111)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"http://security.gd-linux.com/notice/NS-SA-2019-0021");
  script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL dhcp packages. Note that updated packages may not be available yet. Please contact ZTE for
more information.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-1111");
  script_set_attribute(attribute:"cvss3_score_rationale", value:"Scoring adjustsed to align with CVSS 3.1 attack complexity guidance.");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'DHCP Client Command Injection (DynoRoot)');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/05/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/07/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/08/12");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2019-2025 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/ZTE-CGSL/release", "Host/ZTE-CGSL/rpm-list", "Host/cpu");

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("rpm.inc");

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

release = get_kb_item("Host/ZTE-CGSL/release");
if (isnull(release) || release !~ "^CGSL (MAIN|CORE)") audit(AUDIT_OS_NOT, "NewStart Carrier Grade Server Linux");

if (release !~ "CGSL CORE 5.04" &&
    release !~ "CGSL MAIN 5.04")
  audit(AUDIT_OS_NOT, 'NewStart CGSL CORE 5.04 / NewStart CGSL MAIN 5.04');

if (!get_kb_item("Host/ZTE-CGSL/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, "NewStart Carrier Grade Server Linux", cpu);

flag = 0;

pkgs = {
  "CGSL CORE 5.04": [
    "dhclient-4.2.5-68.el7.centos.1",
    "dhcp-4.2.5-68.el7.centos.1",
    "dhcp-common-4.2.5-68.el7.centos.1",
    "dhcp-debuginfo-4.2.5-68.el7.centos.1",
    "dhcp-devel-4.2.5-68.el7.centos.1",
    "dhcp-libs-4.2.5-68.el7.centos.1"
  ],
  "CGSL MAIN 5.04": [
    "dhclient-4.2.5-68.el7.centos.1",
    "dhcp-4.2.5-68.el7.centos.1",
    "dhcp-common-4.2.5-68.el7.centos.1",
    "dhcp-debuginfo-4.2.5-68.el7.centos.1",
    "dhcp-devel-4.2.5-68.el7.centos.1",
    "dhcp-libs-4.2.5-68.el7.centos.1"
  ]
};
pkg_list = pkgs[release];

foreach (pkg in pkg_list)
  if (rpm_check(release:"ZTE " + release, reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "dhcp");
}