Rockwell Automation Stratix Cisco IOS and IOS XE Software DNS Forwarder Denial of Service (CVE-2016-6380)

high Tenable OT Security Plugin ID 501822

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A vulnerability in the DNS forwarder functionality of Cisco IOS and IOS XE Software could allow an unauthenticated, remote attacker to cause the device to reload, corrupt the information present in the device's local DNS cache, or read part of the process memory. The vulnerability is due to a flaw in handling crafted DNS response messages. An attacker could exploit this vulnerability by intercepting and crafting a DNS response message to a client DNS query that was forwarded from the affected device to a DNS server. A successful exploit could cause the device to reload, resulting in a denial of service (DoS) condition or corruption of the local DNS cache information.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

Rockwell Automation has provided a new firmware version, Version 15.6.3, to mitigate these vulnerabilities.

See Rockwell Automation's security advisory for more information.

Plugin Details

Severity: High

ID: 501822

Version: 1.1

Type: remote

Family: Tenable.ot

Published: 11/15/2023

Updated: 11/16/2023

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 8.3

Temporal Score: 6.1

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

CVSS Score Source: CVE-2016-6380

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

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

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

Vulnerability Information

CPE: cpe:/h:rockwellautomation:allen-bradley_stratix_5900_industrial_managed_ethernet_switch

Required KB Items: Tenable.ot/Rockwell

Exploit Ease: No known exploits are available

Patch Publication Date: 10/5/2016

Vulnerability Publication Date: 10/5/2016

Reference Information

CVE: CVE-2016-6380

CWE: 755

Detections

Analytics