Palo Alto Networks PAN-OS 7.1.x < 8.1.17 / 8.x < 8.1.17 / 9.0.x < 9.0.11 / 9.1.x < 9.1.5 Vulnerability

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

include('compat.inc');

if (description)
{
  script_id(142873);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/02/19");

  script_cve_id("CVE-2020-1999");
  script_xref(name:"IAVA", value:"2020-A-0522-S");

  script_name(english:"Palo Alto Networks PAN-OS 7.1.x < 8.1.17 / 8.x < 8.1.17 / 9.0.x < 9.0.11 / 9.1.x < 9.1.5 Vulnerability");

  script_set_attribute(attribute:"synopsis", value:
"The remote PAN-OS host is affected by a vulnerability");
  script_set_attribute(attribute:"description", value:
"The version of Palo Alto Networks PAN-OS running on the remote host is 7.1.x prior to 8.1.17 or 8.0.x prior to 8.1.17 or
8.1.x prior to 8.1.17 or 9.0.x prior to 9.0.11 or 9.1.x prior to 9.1.5. It is, therefore, affected by a vulnerability.

  - A vulnerability exists in the Palo Alto Network PAN-OS signature-based threat detection engine that allows
    an attacker to communicate with devices in the network in a way that is not analyzed for threats by
    sending data through specifically crafted TCP packets. This technique evades signature-based threat
    detection. This issue impacts: PAN-OS 8.1 versions earlier than 8.1.17; PAN-OS 9.0 versions earlier than
    9.0.11; PAN-OS 9.1 versions earlier than 9.1.5; All versions of PAN-OS 7.1 and PAN-OS 8.0. (CVE-2020-1999)

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:"https://security.paloaltonetworks.com/CVE-2020-1999");
  script_set_attribute(attribute:"see_also", value:"https://cwe.mitre.org/data/definitions/754.html");
  script_set_attribute(attribute:"solution", value:
"Upgrade to PAN-OS 8.1.17 / 8.1.17 / 8.1.17 / 9.0.11 / 9.1.5 or later");
  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:U/C:N/I:L/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-2020-1999");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_cwe_id(754);

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/11/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/11/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/11/13");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:paloaltonetworks:pan-os");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Palo Alto 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("palo_alto_version.nbin");
  script_require_keys("Host/Palo_Alto/Firewall/Version", "Host/Palo_Alto/Firewall/Full_Version", "Host/Palo_Alto/Firewall/Source");

  exit(0);
}

include('vcf.inc');
include('vcf_extras.inc');

vcf::palo_alto::initialize();

app_name = 'Palo Alto Networks PAN-OS';

app_info = vcf::get_app_info(app:app_name, kb_ver:'Host/Palo_Alto/Firewall/Full_Version', kb_source:'Host/Palo_Alto/Firewall/Source');

constraints = [
  { 'min_version' : '7.1.0', 'fixed_version' : '8.1.17' },
  { 'min_version' : '9.0.0', 'fixed_version' : '9.0.11' },
  { 'min_version' : '9.1.0', 'fixed_version' : '9.1.5' }
];

vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING);