Vulnerabilities > CVE-2019-1714 - Unspecified vulnerability in Cisco products

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

include("compat.inc");

if (description)
{
  script_id(128063);
  script_version("1.6");
  script_cvs_date("Date: 2019/12/20");

  script_cve_id("CVE-2019-1714");
  script_bugtraq_id(108185);
  script_xref(name:"CISCO-BUG-ID", value:"CSCvn72570");
  script_xref(name:"CISCO-SA", value:"cisco-sa-20190501-asaftd-saml-vpn");
  script_xref(name:"IAVA", value:"2019-A-0271");

  script_name(english:"Cisco Adaptive Security Appliance VPN SAML Authentication Bypass Vulnerability (cisco-sa-20190501-asaftd-saml-vpn)");
  script_summary(english:"Checks the ASA version.");

  script_set_attribute(attribute:"synopsis", value:
"The remote device is missing a vendor-supplied security patch");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version the Cisco Adaptive Security
Appliance (ASA) software running on the remote device is affected by
an authentication bypass vulnerability in the implementation of
Security Assertion Markup Language (SAML) 2.0 Single Sign-On (SSO)
for Clientless SSL VPN (WebVPN) and AnyConnect Remote Access VPN.
The vulnerability is due to improper credential management when using
NT LAN Manager (NTLM) or basic authentication. An attacker could
exploit this vulnerability by opening a VPN session to an affected
device after another VPN user has successfully authenticated to the
affected device via SAML SSO. A successful exploit could allow the
attacker to connect to secured networks behind the affected device.
(CVE-2019-1714)

Please see the included Cisco BID and Cisco Security Advisory for
more information.");
  # https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-asaftd-saml-vpn
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?4bb85a40");
  script_set_attribute(attribute:"see_also", value:"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvn72570");
  script_set_attribute(attribute:"solution", value:
"Upgrade to the relevant fixed version referenced in Cisco bug ID
CSCvn72570.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/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:C/C:N/I:H/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-2019-1714");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_cwe_id(255);


  script_set_attribute(attribute:"vuln_publication_date", value:"2019/05/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/05/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/08/22");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:firepower_threat_defense");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

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

  script_dependencies("ssh_get_info.nasl", "os_fingerprint.nasl");
  script_require_keys("Host/Cisco/ASA", "Host/Cisco/ASA/model", "Settings/ParanoidReport");

  exit(0);
}

include('audit.inc');
include('cisco_workarounds.inc');
include('ccf.inc');

if (report_paranoia < 2) audit(AUDIT_PARANOID);

product_info = cisco::get_product_info(name:"Cisco Adaptive Security Appliance (ASA) Software");

if (
  product_info.model !~ '^30[0-9][0-9]($|[^0-9])' && # 3000 ISA
  product_info.model !~ '^55[0-9][0-9]-X' && # 5500-X
  product_info.model !~ '^65[0-9][0-9]($|[^0-9])' && # 6500
  product_info.model !~ '^76[0-9][0-9]($|[^0-9])' && # 7600
  product_info.model != 'v' &&                       # ASAv
  product_info.model !~ '^21[0-9][0-9]($|[^0-9])' && # Firepower 2100 SSA
  product_info.model !~ '^41[0-9][0-9]($|[^0-9])' && # Firepower 4100 SSA
  product_info.model !~ '^93[0-9][0-9]($|[^0-9])'    # Firepower 9300 ASA
) audit(AUDIT_HOST_NOT, "an affected Cisco ASA product");

vuln_ranges = [
  {'min_ver' : '9.7',  'fix_ver' : '9.8(4)'},
  {'min_ver' : '9.8',  'fix_ver' : '9.8(4)'},
  {'min_ver' : '9.9',  'fix_ver' : '9.9(2.50)'},
  {'min_ver' : '9.10',  'fix_ver' : '9.10(1.17)'}
];

workarounds = make_list(CISCO_WORKAROUNDS['show_webvpn_saml_idp']);
workaround_params = make_list();

reporting = make_array(
  'port'     , 0,
  'severity' , SECURITY_WARNING,
  'version'  , product_info['version'],
  'bug_id'   , 'CSCvn72570'
);

cisco::check_and_report(product_info:product_info, workarounds:workarounds, workaround_params:workaround_params, reporting:reporting, vuln_ranges:vuln_ranges);

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

include("compat.inc");

if (description)
{
  script_id(128064);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/12");

  script_cve_id("CVE-2019-1714");
  script_bugtraq_id(108185);
  script_xref(name:"CISCO-BUG-ID", value:"CSCvn72570");
  script_xref(name:"CISCO-SA", value:"cisco-sa-20190501-asaftd-saml-vpn");
  script_xref(name:"IAVA", value:"2019-A-0271");

  script_name(english:"Cisco Firepower Threat Defense (FTD) VPN SAML Authentication Bypass Vulnerability (cisco-sa-20190501-asaftd-saml-vpn)");
  script_summary(english:"Checks the version of Cisco Firepower Threat Defense Software.");

  script_set_attribute(attribute:"synopsis", value:
"The remote device is missing a vendor-supplied security patch.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version, the Cisco Firepower Threat
Defense (FTD) Software is affected by an authentication bypass
vulnerability in the implementation of Security Assertion Markup
Language (SAML) 2.0 Single Sign-On (SSO) for Clientless SSL VPN
(WebVPN) and AnyConnect Remote Access VPN. The vulnerability is due
to improper credential management when using NT LAN Manager (NTLM)
or basic authentication. An attacker could exploit this vulnerability
by opening a VPN session to an affected device after another VPN user
has successfully authenticated to the affected device via SAML SSO.
A successful exploit could allow the attacker to connect to secured
networks behind the affected device. (CVE-2019-1714)

Please see the included Cisco BID and Cisco Security Advisory for
more information.");
  # https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-asaftd-saml-vpn
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?4bb85a40");
  script_set_attribute(attribute:"see_also", value:"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvn72570");
  script_set_attribute(attribute:"solution", value:
"Upgrade to the relevant fixed version referenced in Cisco bug ID
CSCvn72570");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/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:C/C:N/I:H/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-2019-1714");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_cwe_id(255);

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/05/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/05/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/08/22");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:firepower_threat_defense");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("cisco_enumerate_firepower.nbin");
  script_require_keys("installed_sw/Cisco Firepower Threat Defense", "Host/Cisco/Firepower");

  exit(0);
}

include('cisco_workarounds.inc');
include('ccf.inc');

product_info = cisco::get_product_info(name:'Cisco Firepower Threat Defense');

vuln_ranges = [
  {'min_ver' : '6.2.1',  'fix_ver' : '6.2.3.12'},
  {'min_ver' : '6.3.0',  'fix_ver' : '6.3.0.3'}
];

is_ftd_cli = get_kb_item_or_exit("Host/Cisco/Firepower/is_ftd_cli");
if (!is_ftd_cli)
{
  if (report_paranoia < 2)
    audit(AUDIT_PARANOID);
  else
  {
    workarounds = make_list();
    extra = 'Note that Nessus was unable to check for workarounds';
  }
}
else
{
  workarounds = make_list(CISCO_WORKAROUNDS['show_webvpn_saml_idp'], CISCO_WORKAROUNDS['saml_2_sp']);
  cmds = make_list('show webvpn saml idp', 'show running-config');
}

reporting = make_array(
  'port'     , 0,
  'severity' , SECURITY_WARNING,
  'version'  , product_info['version'],
  'bug_id'   , 'CSCvn72570',
  'extra'    , extra
);

if (max_index(cmds) > 0)
  reporting['cmds'] = cmds;

cisco::check_and_report(
  product_info:product_info,
  workarounds:workarounds,
  reporting:reporting,
  vuln_ranges:vuln_ranges,
  require_all_workarounds:TRUE
);