Opera < 15 UTF-8 Encoding XSS

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

include("compat.inc");

if (description)
{
  script_id(70217);
  script_version("1.6");
  script_cvs_date("Date: 2018/11/15 20:50:28");

  script_cve_id("CVE-2013-4705");
  script_bugtraq_id(62425);

  script_name(english:"Opera < 15 UTF-8 Encoding XSS");
  script_summary(english:"Checks version number of Opera");

  script_set_attribute(attribute:"synopsis", value:
"The remote host contains a web browser that is affected by a cross-
site scripting vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Opera installed on the remote host is a version prior
to version 15. It is, therefore, vulnerable to cross-site scripting
attacks due to improper validation of UTF-8 page encoding settings.");
  script_set_attribute(attribute:"see_also", value:"http://web.archive.org/web/20170722130524/http://www.opera.com:80/docs/changelogs/unified/1500/");
  script_set_attribute(attribute:"solution", value:"Upgrade to Opera 15 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(20, 74, 79, 442, 629, 711, 712, 722, 725, 750, 751, 800, 801, 809, 811, 864, 900, 928, 931, 990);

  script_set_attribute(attribute:"vuln_publication_date", value:"2013/09/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2013/07/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/09/30");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:opera:opera_browser");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

  script_copyright(english:"This script is Copyright (C) 2013-2018 Tenable Network Security, Inc.");

  script_dependencies("opera_installed.nasl");
  script_require_keys("SMB/Opera/Version");

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");

version = get_kb_item_or_exit("SMB/Opera/Version");
path = get_kb_item_or_exit("SMB/Opera/Path");

version_ui = get_kb_item("SMB/Opera/Version_UI");
if (isnull(version_ui)) version_report = version;
else version_report = version_ui;

if (get_kb_item("SMB/Opera/supported_classic_branch"))
  audit(AUDIT_INST_PATH_NOT_VULN, "Opera", version_report, path);

fixed_version = "15.0.1147.130";

# Check if we need to display full version info in case of Alpha/Beta/RC
major_minor = eregmatch(string:version, pattern:"^([0-9]+\.[0-9]+)");
if (major_minor[1] == "15.0")
{
  fixed_version_report = fixed_version;
  version_report = version;
}
else fixed_version_report = "15.0";

if (ver_compare(ver:version, fix:fixed_version) == -1)
{
  port = get_kb_item("SMB/transport");
  if (!port) port = 445;

  set_kb_item(name:"www/0/XSS", value:TRUE);

  if (report_verbosity > 0)
  {
    report =
      '\n  Path              : ' + path +
      '\n  Installed version : ' + version_report +
      '\n  Fixed version     : ' + fixed_version_report +
      '\n';
    security_warning(port:port, extra:report);
  }
  else security_warning(port);
  exit(0);
}
else audit(AUDIT_INST_PATH_NOT_VULN, "Opera", version_report, path);