Cisco Wireless LAN Controller Web Authentication DoS (CSCum03269)

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

include("compat.inc");

if (description)
{
  script_id(83766);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/08/20");

  script_cve_id("CVE-2015-0723");
  script_bugtraq_id(74571);
  script_xref(name:"CISCO-BUG-ID", value:"CSCum03269");

  script_name(english:"Cisco Wireless LAN Controller Web Authentication DoS (CSCum03269)");
  script_summary(english:"Checks the WLC version.");

  script_set_attribute(attribute:"synopsis", value:
"The remote device is missing a vendor-supplied security update.");
  script_set_attribute(attribute:"description", value:
"The remote Cisco Wireless LAN Controller (WLC) is affected by a denial
of service vulnerability in the web authentication subsystem due to
improper validation of user-supplied input. An unauthenticated,
adjacent attacker can exploit this, via a specially crafted request,
to cause a process crash and a restart of the system.");
  script_set_attribute(attribute:"see_also", value:"https://tools.cisco.com/security/center/viewAlert.x?alertId=38749");
  script_set_attribute(attribute:"solution", value:
"Upgrade to the relevant fixed version referenced in Cisco bug ID
CSCum03269.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:N/C:N/I:N/A:C");
  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_set_attribute(attribute:"vuln_publication_date", value:"2015/05/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/05/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/05/21");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:wireless_lan_controller_software");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"CISCO");

  script_dependencies("cisco_wlc_version.nasl");
  script_require_keys("Host/Cisco/WLC/Version", "Host/Cisco/WLC/Port");

  exit(0);
}

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

version = get_kb_item_or_exit("Host/Cisco/WLC/Version");
port = get_kb_item_or_exit("Host/Cisco/WLC/Port");
# Per CISCO support this range is affected, unaffected versions
# listed in bug are NOT fixed, this was a mistake in documentation
if(ver_compare(ver:version, fix:"7.5", strict:FALSE) >= 0 && ver_compare(ver:version, fix:"7.6.120.0", strict:FALSE) <= 0)
{
  if (report_verbosity > 0)
  {
    report =
      '\n  Model             : ' + model +
      '\n  Installed version : ' + version +
      '\n  Fixed version     : 7.6(120.1)' +
      '\n';
    security_warning(port:port, extra:report);
  }
  else security_warning(port);
}
else audit(AUDIT_HOST_NOT, "affected");