Cisco ASA Improper Access Control (CVE-2018-15398)

medium Tenable OT Security Plugin ID 506032

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A vulnerability in the per-user-override feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass an access control list (ACL) that is configured for an interface of an affected device. The vulnerability is due to errors that could occur when the affected software constructs and applies per-user-override rules. An attacker could exploit this vulnerability by connecting to a network through an affected device that has a vulnerable configuration. A successful exploit could allow the attacker to access resources that are behind the affected device and would typically be protected by the interface ACL.

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: 506032

File Name: tenable_ot_cisco_CVE-2018-15398.nasl

Version: 1.1

Type: Remote

Family: Tenable.ot

Published: 10/5/2026

Updated: 10/5/2026

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N

CVSS Score Source: CVE-2018-15398

CVSS v3

Risk Factor: Medium

Base Score: 4

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

Vulnerability Information

CPE: cpe:/o:cisco:adaptive_security_appliance_software:9.4%282%29, cpe:/o:cisco:adaptive_security_appliance_software:9.4%284%29

Required KB Items: Tenable.ot/Cisco

Patch Publication Date: 10/5/2018

Vulnerability Publication Date: 10/5/2018

Reference Information

CVE: CVE-2018-15398

CWE: 284

Detections

Analytics