Vulnerabilities > CVE-2019-12756 - Unspecified vulnerability in Symantec Endpoint Protection

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(131233);
  script_version("1.3");
  script_cvs_date("Date: 2019/12/11");

  script_cve_id(
    "CVE-2019-12756",
    "CVE-2019-12757",
    "CVE-2019-12758",
    "CVE-2019-18372"
  );
  script_bugtraq_id(
    110785,
    110786,
    110787,
    110789
  );
  script_xref(name:"IAVA", value:"2019-A-0431");

  script_name(english:"Symantec Endpoint Protection Client 12.x < 12.1.7454.7000 / 14.x < 14.2.5323.2000 Multiple Vulnerabilities (SYMSA1488)");
  script_summary(english:"Checks the SEP Client version.");

  script_set_attribute(attribute:"synopsis", value:
"The Symantec Endpoint Protection Client installed on the remote host
is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of Symantec Endpoint Protection (SEP) Client installed 
on the remote host is 12.x prior to 12.1.7454.7000 or 14.x prior 
to 14.2.5323.2000.  It is, therefore, affected by multiple vulnerabilities.

  - An authentication bypass vulnerability exists in the second layer
    of password protection. An authenticated, local attacker can 
    exploit this to bypass authentication and execute arbitrary 
    actions with local administrator privileges. (CVE-2019-12756)

  - A privilege escalation vulnerability exists. An unauthenticated,
    local attacker can exploit this to gain privileged access to the 
    system. (CVE-2019-12757, CVE-2019-18372)

  - A remote command execution vulnerability exists due to an unsigned
    code execution vulnerability. An unauthenticated, remote attacker 
    can exploit this to execute code without a resident proper digital
    signature. (CVE-2019-12758)
  
Note that Nessus has not tested for this issue but has instead relied
only on the application's self-reported version number.");
  # https://support.symantec.com/en_US/article.SYMSA1488.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?7b879310");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Symantec Endpoint Protection Client version 12.1.7454.7000, 14.2.5323.2000 or later.");
  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:"cvss_score_source", value:"CVE-2019-18372");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/11/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/11/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/11/22");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:symantec:endpoint_protection");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

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

  script_dependencies("savce_installed.nasl");
  script_require_keys("Antivirus/SAVCE/version");
  script_require_ports(139, 445);

  exit(0);
}

include('audit.inc');
include('global_settings.inc');
include('misc_func.inc');

app = 'Symantec Endpoint Protection Client';

display_ver = get_kb_item_or_exit('Antivirus/SAVCE/version');
edition = get_kb_item('Antivirus/SAVCE/edition');
if(get_kb_item('SMB/svc/ssSpnAv')) audit(AUDIT_INST_VER_NOT_VULN, 'Symantec.cloud Endpoint Protection');

if (isnull(edition)) edition = '';
else if (edition == 'sepsb') app += ' Small Business Edition';

fixed_ver = NULL;

if (display_ver =~ '^12\\.1\\.' || display_ver =~ '^14\\.')
  if (edition == 'sepsb')
    fixed_ver = '12.1.7510.7002';
  else # we have a small business edition
    fixed_ver = '14.2.5323.2000';
else
  audit(AUDIT_INST_VER_NOT_VULN, app, display_ver);

if (ver_compare(ver:display_ver, fix:fixed_ver, strict:FALSE) == -1)
{
  port = get_kb_item('SMB/transport');
  if (!port) port = 445;

  report =
    '\n  Product           : ' + app +
    '\n  Installed version : ' + display_ver +
    '\n  Fixed version     : ' + fixed_ver +
    '\n';
  security_report_v4(severity:SECURITY_HOLE, port:port, extra:report);
}
else audit(AUDIT_INST_VER_NOT_VULN, app, display_ver);