Cisco ASA Uncontrolled Resource Consumption (CVE-2018-15383)

high Tenable OT Security Plugin ID 506031

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A vulnerability in the cryptographic hardware accelerator driver of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a temporary denial of service (DoS) condition. The vulnerability exists because the affected devices have a limited amount of Direct Memory Access (DMA) memory and the affected software improperly handles resources in low-memory conditions. An attacker could exploit this vulnerability by sending a sustained, high rate of malicious traffic to an affected device to exhaust memory on the device. A successful exploit could allow the attacker to exhaust DMA memory on the affected device, which could cause the device to reload and result in a temporary 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: High

ID: 506031

File Name: tenable_ot_cisco_CVE-2018-15383.nasl

Version: 1.2

Type: Remote

Family: Tenable.ot

Published: 10/5/2026

Updated: 10/6/2026

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.72

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2018-15383

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:cisco:adaptive_security_appliance_software:9.3, cpe:/o:cisco:adaptive_security_appliance_software:9.4, cpe:/o:cisco:adaptive_security_appliance_software:9.5, cpe:/o:cisco:adaptive_security_appliance_software:9.6, cpe:/o:cisco:adaptive_security_appliance_software:9.6%2843%29, cpe:/o:cisco:adaptive_security_appliance_software:9.7, cpe:/o:cisco:adaptive_security_appliance_software:9.8, cpe:/o:cisco:adaptive_security_appliance_software:9.9, cpe:/o:cisco:adaptive_security_appliance_software:9.9%2828%29

Required KB Items: Tenable.ot/Cisco

Exploit Ease: No known exploits are available

Patch Publication Date: 10/5/2018

Vulnerability Publication Date: 10/5/2018

Reference Information

CVE: CVE-2018-15383

CWE: 400, 770

Detections

Analytics