Cisco IOS Access Points DoS (cisco-sa-20190717-aironet-dos)

medium Nessus Plugin ID 143157
New! Vulnerability Priority Rating (VPR)

Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it is different from CVSS.

VPR Score: 4.4


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


A denial of service (DoS) vulnerability exists in Cisco IOS Access Points due to a lack of complete error handling condition for client authentication requests sent to a targeted interface configured for FT. An unauthenticated, adjacent attacker can exploit this issue, by sending crafted authentication request traffic to the targeted interface, to cause the device to restart.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.


Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvg957452.

See Also

Plugin Details

Severity: Medium

ID: 143157

File Name: cisco-sa-20190717-aironet-dos.nasl

Version: 1.4

Type: combined

Family: CISCO

Published: 11/20/2020

Updated: 11/24/2020

Dependencies: cisco_wlc_version.nasl, cisco_aironet_webui_detect.nbin

Risk Information

Risk Factor: Medium

VPR Score: 4.4

CVSS Score Source: CVE-2019-1920

CVSS v2.0

Base Score: 6.1

Temporal Score: 4.5

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

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

CVSS v3.0

Base Score: 7.4

Temporal Score: 6.4

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

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

Vulnerability Information

CPE: cpe:/o:cisco:ios, x-cpe:/h:cisco:aironet

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/2/2018

Vulnerability Publication Date: 5/2/2018

Reference Information

CVE: CVE-2019-1920