Cisco Prime Data Center Network Manager 10.1.x < 10.2.1 Multiple Vulnerabilities (remote check)

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

include("compat.inc");

if (description)
{
  script_id(100993);
  script_version("1.4");
  script_cvs_date("Date: 2018/09/06 16:14:34");

  script_cve_id("CVE-2017-6639", "CVE-2017-6640");
  script_bugtraq_id(98935, 98937);
  script_xref(name:"CISCO-BUG-ID", value:"CSCvd09961");
  script_xref(name:"CISCO-BUG-ID", value:"CSCvd95346");
  script_xref(name:"CISCO-SA", value:"cisco-sa-20170607-dcnm1");
  script_xref(name:"CISCO-SA", value:"cisco-sa-20170607-dcnm2");

  script_name(english:"Cisco Prime Data Center Network Manager 10.1.x < 10.2.1 Multiple Vulnerabilities (remote check)");
  script_summary(english:"Checks the DCNM version number.");

  script_set_attribute(attribute:"synopsis", value:
"A network management system running on the remote host is affected by
multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version number, the Cisco Prime Data
Center Network Manager (DCNM) installed on the remote host is 10.1.x
prior to 10.2.1. It is, therefore, affected by multiple
vulnerabilities :

  - A remote code execution vulnerability exists in the
    role-based access control (RBAC) functionality due to a
    lack of authentication and authorization mechanisms for
    a debugging tool. An unauthenticated, remote attacker
    can exploit this to execute arbitrary code with root
    privileges. (CVE-2017-6639)

  - A flaw exists due to the presence of a default user
    account with a static password that is not automatically
    removed post-installation. An unauthenticated, remote
    attacker can exploit this to login and gain root or
    system-level privileges. (CVE-2017-6640)

Note that this plugin determines if DCNM is vulnerable by checking the
version number displayed in the web interface. However, the web
interface is not available in older versions of DCNM.");
  # https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170607-dcnm1
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?0f182f37");
  script_set_attribute(attribute:"see_also", value:"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvd09961");
  # https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170607-dcnm2
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5542fca3");
  script_set_attribute(attribute:"see_also", value:"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvd95346");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Cisco Prime Data Center Network Manager version 10.2.1 or
later.");
  script_set_cvss_base_vector("CVSS2#AV:N/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: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:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/06/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/06/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/06/22");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:cisco:prime_data_center_network_manager");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2017-2018 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("cisco_prime_dcnm_web_detect.nasl");
  script_require_keys("installed_sw/cisco_dcnm_web");
  script_require_ports("Services/www", 80);

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("http.inc");
include("install_func.inc");

appname = "Cisco Prime DCNM";
app_id  = "cisco_dcnm_web";
get_install_count(app_name:app_id, exit_if_zero:TRUE);

port = get_http_port(default:80);
install = get_single_install(app_name:app_id, port:port, exit_if_unknown_ver:TRUE);

url = build_url(qs:install['path'], port:port);
ver = install['version'];

match = eregmatch(string:ver, pattern:"^([0-9.]+)\(([^)]+)\)");
if (isnull(match)) exit(1, "Failed to parse the version ("+ver+").");

major = match[1];
build = match[2];

# Affected (from CVRF):
# 10.1(1), 10.1(2)
if (major == '10.1' && build =~ "^[12]$")
{

  report =
    '\n  URL               : ' + url +
    '\n  Installed version : ' + ver +
    '\n  Fixed version     : 10.2(1)' +
    '\n';
  security_report_v4(severity:SECURITY_HOLE, port:port, extra:report);
}
else audit(AUDIT_WEB_APP_NOT_AFFECTED, appname, url, ver);