Apache Traffic Server 9.x < 9.0.1 DoS

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(184806);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/08");

  script_cve_id("CVE-2021-27737");

  script_name(english:"Apache Traffic Server 9.x < 9.0.1 DoS");

  script_set_attribute(attribute:"synopsis", value:
"The remote web server is affected by a denial of service vulnerability.");
  script_set_attribute(attribute:"description", value:
"Apache Traffic Server 9.0.0 is vulnerable to a remote DOS attack on the experimental Slicer plugin.

Note that Nessus did not actually test for these issues, but instead has relied on the version found in the
server's banner.");
  # https://lists.apache.org/thread/j73v1wm6132zbz4dqozp6dgmt8kww423
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b3cf4ff4");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Apache Traffic Server version 9.0.1 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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-2021-27737");

  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:"2021/05/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/05/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/11/07");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:apache:traffic_server");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Web Servers");

  script_copyright(english:"This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("apache_traffic_server_version.nasl");
  script_require_keys("installed_sw/Apache Traffic Server");
  script_require_ports("Services/www", 80, 443, 8080);

  exit(0);
}

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

var port = get_http_port(default:8080);

var app_info = vcf::get_app_info(app:'Apache Traffic Server', port:port, webapp:TRUE);

# No way to check if experimental Slicer plugin is enabled.
if (report_paranoia < 2) audit(AUDIT_POTENTIAL_VULN, 'Apache Traffic Server', app_info.version, app_info.port);

var constraints = [
  { 'min_version':'9.0', 'fixed_version' : '9.0.1' }
];

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