Cisco Wireless LAN Controller IPv6 UDP Packet Handling DoS (cisco-sa-20170405-wlc2)

high Nessus Plugin ID 99473

Synopsis

The remote device is missing a vendor-supplied security patch.

Description

According to its self-reported version, the Cisco Wireless LAN Controller (WLC) software running on the remote device is affected by a denial of service vulnerability in the IPv6 UDP ingress packet processing functionality due to incomplete IPv6 UDP header validation.
An unauthenticated, remote attacker can exploit this, via a specially crafted IPv6 UDP packet, to cause the device to reload.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCva98592.

See Also

http://www.nessus.org/u?72db09c5

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCva98592

Plugin Details

Severity: High

ID: 99473

File Name: cisco-sa-20170405-wlc2.nasl

Version: 1.6

Type: combined

Family: CISCO

Published: 4/19/2017

Updated: 8/20/2020

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/h:cisco:wireless_lan_controller, cpe:/o:cisco:wireless_lan_controller_firmware

Required KB Items: Host/Cisco/WLC/Version, Host/Cisco/WLC/Port

Exploit Ease: No known exploits are available

Patch Publication Date: 4/5/2017

Vulnerability Publication Date: 4/5/2017

Reference Information

CVE: CVE-2016-9219

BID: 97423

CISCO-SA: cisco-sa-20170405-wlc2

CISCO-BUG-ID: CSCva98592