Cisco ASA Buffer Copy without Checking Size of Input (CVE-2022-20927)

medium Tenable OT Security Plugin ID 506170

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A vulnerability in the SSL/TLS client of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper memory management when a device initiates SSL/TLS connections. An attacker could exploit this vulnerability by ensuring that the device will connect to an SSL/TLS server that is using specific encryption parameters. A successful exploit could allow the attacker to cause the affected device to unexpectedly reload, resulting in a 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.

Plugin Details

Severity: Medium

ID: 506170

File Name: tenable_ot_cisco_CVE-2022-20927.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

Percentile: 23.18

CVSS v3

Risk Factor: Medium

Base Score: 6.5

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

Vulnerability Information

CPE: cpe:/o:cisco:adaptive_security_appliance_software:9.13.1.10, cpe:/o:cisco:adaptive_security_appliance_software:9.13.1.12, cpe:/o:cisco:adaptive_security_appliance_software:9.13.1.13, cpe:/o:cisco:adaptive_security_appliance_software:9.13.1.16, cpe:/o:cisco:adaptive_security_appliance_software:9.13.1.19, cpe:/o:cisco:adaptive_security_appliance_software:9.13.1.21, cpe:/o:cisco:adaptive_security_appliance_software:9.13.1.2, cpe:/o:cisco:adaptive_security_appliance_software:9.13.1.7, cpe:/o:cisco:adaptive_security_appliance_software:9.13.1, cpe:/o:cisco:adaptive_security_appliance_software:9.14.1.10, cpe:/o:cisco:adaptive_security_appliance_software:9.14.1.15, cpe:/o:cisco:adaptive_security_appliance_software:9.14.1.19, cpe:/o:cisco:adaptive_security_appliance_software:9.14.1.30, cpe:/o:cisco:adaptive_security_appliance_software:9.14.1, cpe:/o:cisco:adaptive_security_appliance_software:9.14.2.13, cpe:/o:cisco:adaptive_security_appliance_software:9.14.2.15, cpe:/o:cisco:adaptive_security_appliance_software:9.14.2.4, cpe:/o:cisco:adaptive_security_appliance_software:9.14.2.8, cpe:/o:cisco:adaptive_security_appliance_software:9.14.2, cpe:/o:cisco:adaptive_security_appliance_software:9.14.3.11, cpe:/o:cisco:adaptive_security_appliance_software:9.14.3.13, cpe:/o:cisco:adaptive_security_appliance_software:9.14.3.15, cpe:/o:cisco:adaptive_security_appliance_software:9.14.3.18, cpe:/o:cisco:adaptive_security_appliance_software:9.14.3.1, cpe:/o:cisco:adaptive_security_appliance_software:9.14.3.9, cpe:/o:cisco:adaptive_security_appliance_software:9.14.3, cpe:/o:cisco:adaptive_security_appliance_software:9.15.1.10, cpe:/o:cisco:adaptive_security_appliance_software:9.15.1.15, cpe:/o:cisco:adaptive_security_appliance_software:9.15.1.16, cpe:/o:cisco:adaptive_security_appliance_software:9.15.1.17, cpe:/o:cisco:adaptive_security_appliance_software:9.15.1.1, cpe:/o:cisco:adaptive_security_appliance_software:9.15.1.21, cpe:/o:cisco:adaptive_security_appliance_software:9.15.1.7, cpe:/o:cisco:adaptive_security_appliance_software:9.15.1

Required KB Items: Tenable.ot/Cisco

Patch Publication Date: 11/15/2022

Vulnerability Publication Date: 11/15/2022

Reference Information

CVE: CVE-2022-20927

CWE: 120

Detections

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