Palo Alto Networks PAN-OS 8.1.x < 8.1.13 Privilege Escalation (PAN-97584)

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

include('compat.inc');

if (description)
{
  script_id(134709);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/10/14");

  script_cve_id("CVE-2020-1979");
  script_xref(name:"IAVA", value:"2020-A-0105-S");

  script_name(english:"Palo Alto Networks PAN-OS 8.1.x < 8.1.13 Privilege Escalation (PAN-97584)");

  script_set_attribute(attribute:"synopsis", value:
"The remote PAN-OS host is affected by vulnerability");
  script_set_attribute(attribute:"description", value:
"The version of Palo Alto Networks PAN-OS running on the remote host is 8.1.x prior to 8.1.13. It is, therefore, affected
by a format string vulnerability in the PAN-OS log daemon (logd) on Panorama due to improper handling of user-supplied
input. An authenticated, local attacker can exploit this, by supplying crafted input, in order to execute arbitrary
code, bypass the restricted shell, and escalate privileges.

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-2020-1979");
  script_set_attribute(attribute:"solution", value:
"Upgrade to PAN-OS 8.1.13 or later");
  script_set_cvss_base_vector("CVSS2#AV:L/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: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-2020-1979");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_cwe_id(134);

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/03/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/03/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/03/19");

  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 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' : '8.1.0', 'fixed_version' : '8.1.13' }
];

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