Detections
Analytics
Cisco IOS XE Software Catalyst 9000 Family SNMP Trap DoS (cisco-sa-iosxe-ewlc-snmp-dos-wNkedg9K)
high Nessus Plugin ID 141266
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Synopsis
The remote device is missing a vendor-supplied security patchDescription
According to its self-reported version, IOS XE Software is affected by a DoS vulnerability in the Simple Network Management Protocol (SNMP) trap generation for wireless clients due to the lack of input validation of the information used to generate an SNMP trap in relation to a wireless client connection. An unauthenticated, adjacent attacker could exploit this vulnerability by sending an 802.1x packet with crafted parameters during the wireless authentication setup phase of a connection and could cause the device to unexpectedly reload, causing a DoS condition. Please see the included Cisco BID and Cisco Security Advisory for more information.Solution
Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvs56562See Also
http://www.nessus.org/u?e7ff3e30
http://tools.cisco.com/security/center/viewErp.x?alertId=ERP-74268
Plugin Details
Severity: High
ID: 141266
File Name: cisco-sa-iosxe-ewlc-snmp-dos-wNkedg9K-iosxe.nasl
Version: 1.12
Type: combined
Family: CISCO
Published: 10/8/2020
Updated: 5/3/2024
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.4
CVSS v2
Risk Factor: Medium
Base Score: 5.7
Temporal Score: 4.2
Vector: CVSS2#AV:A/AC:M/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2020-3390
CVSS v3
Risk Factor: High
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: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:cisco:ios_xe
Required KB Items: Host/Cisco/IOS-XE/Version, Host/Cisco/IOS-XE/Model
Exploit Ease: No known exploits are available
Patch Publication Date: 9/24/2020
Vulnerability Publication Date: 9/24/2020
Reference Information
CVE: CVE-2020-3390