NewStart CGSL MAIN 4.05 : kernel Multiple Vulnerabilities (NS-SA-2020-0050)

#%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-2020-0050. The text
# itself is copyright (C) ZTE, Inc.
##

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

if (description)
{
  script_id(141403);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");

  script_cve_id("CVE-2019-17055", "CVE-2019-17133");

  script_name(english:"NewStart CGSL MAIN 4.05 : kernel Multiple Vulnerabilities (NS-SA-2020-0050)");

  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 MAIN 4.05, has kernel packages installed that are affected by multiple
vulnerabilities:

  - base_sock_create in drivers/isdn/mISDN/socket.c in the AF_ISDN network module in the Linux kernel through
    5.3.2 does not enforce CAP_NET_RAW, which means that unprivileged users can create a raw socket, aka
    CID-b91ee4aa2a21. (CVE-2019-17055)

  - In the Linux kernel through 5.3.2, cfg80211_mgd_wext_giwessid in net/wireless/wext-sme.c does not reject a
    long SSID IE, leading to a Buffer Overflow. (CVE-2019-17133)

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-2020-0050");
  script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL kernel 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:P/A:P");
  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: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-2019-17133");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/10/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/09/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/10/13");

  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) 2020-2021 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 MAIN 4.05")
  audit(AUDIT_OS_NOT, 'NewStart CGSL MAIN 4.05');

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 MAIN 4.05': [
    'kernel-2.6.32-642.13.1.el6.cgslv4_5.0.154.g27feaf3',
    'kernel-abi-whitelists-2.6.32-642.13.1.el6.cgslv4_5.0.154.g27feaf3',
    'kernel-debug-2.6.32-642.13.1.el6.cgslv4_5.0.154.g27feaf3',
    'kernel-debug-debuginfo-2.6.32-642.13.1.el6.cgslv4_5.0.154.g27feaf3',
    'kernel-debug-devel-2.6.32-642.13.1.el6.cgslv4_5.0.154.g27feaf3',
    'kernel-debuginfo-2.6.32-642.13.1.el6.cgslv4_5.0.154.g27feaf3',
    'kernel-debuginfo-common-x86_64-2.6.32-642.13.1.el6.cgslv4_5.0.154.g27feaf3',
    'kernel-devel-2.6.32-642.13.1.el6.cgslv4_5.0.154.g27feaf3',
    'kernel-firmware-2.6.32-642.13.1.el6.cgslv4_5.0.154.g27feaf3',
    'kernel-headers-2.6.32-642.13.1.el6.cgslv4_5.0.154.g27feaf3',
    'perf-2.6.32-642.13.1.el6.cgslv4_5.0.154.g27feaf3',
    'perf-debuginfo-2.6.32-642.13.1.el6.cgslv4_5.0.154.g27feaf3',
    'python-perf-2.6.32-642.13.1.el6.cgslv4_5.0.154.g27feaf3',
    'python-perf-debuginfo-2.6.32-642.13.1.el6.cgslv4_5.0.154.g27feaf3'
  ]
};
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, 'kernel');
}