CVSS2
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:A/AC:L/Au:N/C:N/I:N/A:C
EPSS
Percentile
44.7%
According to its self-reported version, the remote Cisco Wireless LAN Controller (WLC) device is affected by a denial of service vulnerability due to not discarding malformed values within an 802.11i management frame received from a wireless client. An unauthenticated, adjacent attacker can exploit this, by sending a specifically crafted frame to an access point managed by the WLC device, to cause a denial of service condition.
#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(92457);
script_version("1.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2020/08/20");
script_cve_id("CVE-2015-6311");
script_bugtraq_id(76945);
script_xref(name:"CISCO-SA", value:"Cisco-SA-20151002-CVE-2015-6311");
script_xref(name:"CISCO-BUG-ID", value:"CSCub65236");
script_name(english:"Cisco Wireless LAN Controller 802.11i Management Frame DoS");
script_summary(english:"Checks the WLC version.");
script_set_attribute(attribute:"synopsis", value:
"The remote device is missing vendor-supplied security patches.");
script_set_attribute(attribute:"description", value:
"According to its self-reported version, the remote Cisco Wireless LAN
Controller (WLC) device is affected by a denial of service
vulnerability due to not discarding malformed values within an 802.11i
management frame received from a wireless client. An unauthenticated,
adjacent attacker can exploit this, by sending a specifically crafted
frame to an access point managed by the WLC device, to cause a denial
of service condition.");
# https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/Cisco-SA-20151002-CVE-2015-6311
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b1b6d1d9");
script_set_attribute(attribute:"solution", value:
"Apply the relevant patches referenced in Cisco bug ID CSCub65236.");
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:"2015/10/02");
script_set_attribute(attribute:"patch_publication_date", value:"2015/10/02");
script_set_attribute(attribute:"plugin_publication_date", value:"2016/07/20");
script_set_attribute(attribute:"plugin_type", value:"combined");
script_set_attribute(attribute:"cpe", value:"cpe:/h:cisco:wireless_lan_controller");
script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:wireless_lan_controller_software");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"CISCO");
script_copyright(english:"This script is Copyright (C) 2016-2020 Tenable Network Security, Inc.");
script_dependencies("cisco_wlc_version.nasl");
script_require_keys("Host/Cisco/WLC/Version", "Host/Cisco/WLC/Port");
exit(0);
}
include("audit.inc");
include("cisco_func.inc");
version = get_kb_item_or_exit("Host/Cisco/WLC/Version");
port = get_kb_item_or_exit("Host/Cisco/WLC/Port");
vuln = FALSE;
if (
version == '7.0.240.0' ||
version == '7.3.101.0' ||
version == '7.4.1.19'
) vuln = TRUE;
if (!vuln) audit(AUDIT_HOST_NOT, "affected");
security_report_v4(
port:port,
severity:SECURITY_WARNING,
extra:
'\n Cisco bug ID : CSCub65236' +
'\n Installed version : ' + version +
'\n'
);