Ubiquiti Networks EdgeRouter XSS Vulnerability

# SPDX-FileCopyrightText: 2017 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.106984");
  script_version("2023-07-25T05:05:58+0000");
  script_tag(name:"last_modification", value:"2023-07-25 05:05:58 +0000 (Tue, 25 Jul 2023)");
  script_tag(name:"creation_date", value:"2017-07-25 13:16:00 +0700 (Tue, 25 Jul 2017)");
  script_tag(name:"cvss_base", value:"5.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:P/A:N");

  script_tag(name:"qod_type", value:"remote_banner");

  script_tag(name:"solution_type", value:"VendorFix");

  script_name("Ubiquiti Networks EdgeRouter XSS Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2017 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_ubnt_discovery_protocol_detect.nasl");
  script_mandatory_keys("ubnt_discovery_proto/detected", "ubnt_discovery_proto/short_model",
"ubnt_discovery_proto/firmware");

  script_tag(name:"summary", value:"Ubiquiti Networks EdgeRouter are prone to a cross-site
scripting vulnerability.");

  script_tag(name:"insight", value:"A reflected cross site scripting vulnerability was identified because of an
initialization error in '/files/index/'.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");

  script_tag(name:"affected", value:"Ubiquiti Networks EP-R6, ER-X, ER-X-SFP firmware version 1.9.1 and prior.");

  script_tag(name:"solution", value:"Update to firmware version 1.9.1.1 or later.");

  script_xref(name:"URL", value:"https://www.sec-consult.com/fxdata/seccons/prod/temedia/advisories_txt/20170724-0_Ubiquiti_Networks_EdgeRouter_XSS_v10.txt");

  exit(0);
}

include("version_func.inc");

model = get_kb_item("ubnt_discovery_proto/short_model");
if (!model || (model != "EP-R6" && model != "ER-X" && model != "ER-X-SFP"))
  exit(0);

fw = get_kb_item("ubnt_discovery_proto/firmware");
if (!fw)
  exit(0);

vers = eregmatch(pattern: "\.v([0-9]\.[0-9]\.[0-9](\.[0-9]\.)?)", string: fw);
if (isnull(vers[1]))
  exit(0);

# strip the last dot if present
vers = eregmatch(pattern: "([0-9]\.[0-9]\.[0-9](\.[0-9])?)", string: vers[1]);
version = vers[1];

if (version_is_less(version: version, test_version: "1.9.1.1")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "1.9.1.1");
  security_message(port: 0, data: report);
  exit(0);
}

exit(99);