Detections
Analytics
Cisco ASA Uncontrolled Resource Consumption (CVE-2020-3334)
high Tenable OT Security Plugin ID 506135
Synopsis
The remote OT asset is affected by a vulnerability.Description
A vulnerability in the ARP packet processing of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series Security Appliances could allow an unauthenticated, adjacent attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition on an affected device. The vulnerability is due to incorrect processing of ARP packets received by the management interface of an affected device. An attacker could exploit this vulnerability by sending a series of unicast ARP packets in a short timeframe that would reach the management interface of an affected device. A successful exploit could allow the attacker to consume resources on an affected device, which would prevent the device from sending internal system keepalives and eventually cause the device to reload, resulting in a denial of service (DoS) condition.This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.
Solution
Refer to the vendor advisory.See Also
Plugin Details
Severity: High
ID: 506135
File Name: tenable_ot_cisco_CVE-2020-3334.nasl
Version: 1.1
Type: Remote
Family: Tenable.ot
Published: 10/6/2026
Updated: 10/6/2026
Supported Sensors: Tenable OT Security
Risk Information
VPR
Risk Factor: Low
Score: 3.3
Percentile: 50.7
CVSS v2
Risk Factor: Medium
Base Score: 6.1
Vector: CVSS2#AV:A/AC:L/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2020-3334
CVSS v3
Risk Factor: High
Base Score: 7.4
Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Vulnerability Information
CPE: cpe:/o:cisco:adaptive_security_appliance_software:9
Required KB Items: Tenable.ot/Cisco
Patch Publication Date: 5/6/2020
Vulnerability Publication Date: 5/6/2020
Reference Information
CVE: CVE-2020-3334