NewStart CGSL CORE 5.04 / MAIN 5.04 : pcs Multiple Vulnerabilities (NS-SA-2019-0042)

#%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-2019-0042. The text
# itself is copyright (C) ZTE, Inc.

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

if (description)
{
  script_id(127219);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");

  script_cve_id("CVE-2018-1079", "CVE-2018-1086", "CVE-2018-1000119");

  script_name(english:"NewStart CGSL CORE 5.04 / MAIN 5.04 : pcs Multiple Vulnerabilities (NS-SA-2019-0042)");

  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 pcs packages installed that are affected by
multiple vulnerabilities:

  - Sinatra rack-protection versions 1.5.4 and 2.0.0.rc3 and
    earlier contains a timing attack vulnerability in the
    CSRF token checking that can result in signatures can be
    exposed. This attack appear to be exploitable via
    network connectivity to the ruby application. This
    vulnerability appears to have been fixed in 1.5.5 and
    2.0.0. (CVE-2018-1000119)

  - It was found that the REST interface of the pcsd service
    did not properly sanitize the file name from the
    /remote/put_file query. If the /etc/booth directory
    exists, an authenticated attacker with write permissions
    could create or overwrite arbitrary files with arbitrary
    data outside of the /etc/booth directory, in the context
    of the pcsd process. (CVE-2018-1079)

  - It was found that the REST interface of the pcsd service
    did not properly remove the pcs debug argument from the
    /run_pcs query, possibly disclosing sensitive
    information. A remote attacker with a valid token could
    use this flaw to elevate their privilege.
    (CVE-2018-1086)

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-2019-0042");
  script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL pcs 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:N/C:P/I:N/A:N");
  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:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-1086");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/03/07");
  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) 2019-2021 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": [
    "pcs-0.9.162-5.el7.centos.2",
    "pcs-debuginfo-0.9.162-5.el7.centos.2",
    "pcs-snmp-0.9.162-5.el7.centos.2"
  ],
  "CGSL MAIN 5.04": [
    "pcs-0.9.162-5.el7.centos.2",
    "pcs-debuginfo-0.9.162-5.el7.centos.2",
    "pcs-snmp-0.9.162-5.el7.centos.2"
  ]
};
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_WARNING,
    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, "pcs");
}