NewStart CGSL CORE 5.04 / MAIN 5.04 : pacemaker Vulnerability (NS-SA-2021-0021)

##
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from ZTE advisory NS-SA-2021-0021. The text
# itself is copyright (C) ZTE, Inc.
##

include('compat.inc');

if (description)
{
  script_id(147326);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/03/11");

  script_cve_id("CVE-2020-25654");

  script_name(english:"NewStart CGSL CORE 5.04 / MAIN 5.04 : pacemaker Vulnerability (NS-SA-2021-0021)");

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

  - An ACL bypass flaw was found in pacemaker. An attacker having a local account on the cluster and in the
    haclient group could use IPC communication with various daemons directly to perform certain tasks that
    they would be prevented by ACLs from doing if they went through the configuration. (CVE-2020-25654)

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-2021-0021");
  script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL pacemaker packages. Note that updated packages may not be available yet. Please contact ZTE
for more information.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/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:H/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:"cvss_score_source", value:"CVE-2020-25654");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/11/24");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/03/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/03/10");

  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) 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/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': [
    'pacemaker-1.1.23-1.el7_9.1',
    'pacemaker-cli-1.1.23-1.el7_9.1',
    'pacemaker-cluster-libs-1.1.23-1.el7_9.1',
    'pacemaker-cts-1.1.23-1.el7_9.1',
    'pacemaker-doc-1.1.23-1.el7_9.1',
    'pacemaker-libs-1.1.23-1.el7_9.1',
    'pacemaker-libs-devel-1.1.23-1.el7_9.1',
    'pacemaker-nagios-plugins-metadata-1.1.23-1.el7_9.1',
    'pacemaker-remote-1.1.23-1.el7_9.1'
  ],
  'CGSL MAIN 5.04': [
    'pacemaker-1.1.23-1.el7_9.1',
    'pacemaker-cli-1.1.23-1.el7_9.1',
    'pacemaker-cluster-libs-1.1.23-1.el7_9.1',
    'pacemaker-cts-1.1.23-1.el7_9.1',
    'pacemaker-doc-1.1.23-1.el7_9.1',
    'pacemaker-libs-1.1.23-1.el7_9.1',
    'pacemaker-libs-devel-1.1.23-1.el7_9.1',
    'pacemaker-nagios-plugins-metadata-1.1.23-1.el7_9.1',
    'pacemaker-remote-1.1.23-1.el7_9.1'
  ]
};
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, 'pacemaker');
}