Ansible Tower 3.4.x < 3.4.6 / 3.5.x < 3.5.6 / 3.6.x < 3.6.4 Denial of Service Vulnerability

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(135182);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/09");

  script_cve_id("CVE-2020-10697");
  script_xref(name:"IAVB", value:"2020-B-0016-S");

  script_name(english:"Ansible Tower 3.4.x < 3.4.6 / 3.5.x < 3.5.6 / 3.6.x < 3.6.4 Denial of Service Vulnerability");

  script_set_attribute(attribute:"synopsis", value:
"An IT monitoring application running on the remote host is affected by a Denial of Service vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Ansible Tower running on the remote web server is
3.4.x prior to 3.4.6, or 3.5.x prior to 3.5.6, or 3.6.x prior to
3.6.4. It is, therefore, affected by a Denial of Service vulnerability
when running Openshift that can reduce memcached and Tower performance.

Nessus is unable to detect if Ansible Tower is running on Openshift, and
requires paranoia to flag as vulnerable.");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10697");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2020-10697");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Ansible Tower version 3.4.6 / 3.5.6 / 3.6.4 or later.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:N/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:L/I:N/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-10697");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/03/31");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/03/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/04/02");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:ansible:tower");
  script_set_attribute(attribute:"stig_severity", value:"II");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ansible_tower_installed.nbin", "ansible_tower_detect.nbin");
  script_require_ports("installed_sw/Ansible Tower", "installed_sw/Ansible Tower WebUI", 80, 443);

  exit(0);
}

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

var app;

if(!isnull(get_kb_item('installed_sw/Ansible Tower')))
  app = vcf::get_app_info(app:'Ansible Tower');
else
{
  var port = get_http_port(default:443);
  app = vcf::get_app_info(app:'Ansible Tower WebUI', webapp:TRUE, port:port);
}

var constraints = 
[
  {'min_version' : '3.4.0', 'fixed_version' : '3.4.6'},
  {'min_version' : '3.5.0', 'fixed_version' : '3.5.6'},
  {'min_version' : '3.6.0', 'fixed_version' : '3.6.4'}
];

vcf::check_version_and_report(
  app_info:app,
  constraints:constraints,
  severity:SECURITY_NOTE,
  strict:FALSE,
  require_paranoia:TRUE
);