Rockwell Automation products using GoAhead Web Server Use After Free (CVE-2019-5096)

critical Tenable OT Security Plugin ID 500904

Synopsis

The remote OT asset is affected by a vulnerability.

Description

An exploitable code execution vulnerability exists in the processing of multi-part/form-data requests within the base GoAhead web server application in versions v5.0.1, v.4.1.1 and v3.6.5. A specially crafted HTTP request can lead to a use-after-free condition during the processing of this request that can be used to corrupt heap structures that could lead to full code execution. The request can be unauthenticated in the form of GET or POST requests, and does not require the requested resource to exist on the server.

Rockwell Automation is aware of multiple products that utilize the GoAhead web server application and are affected by CVE 2019-5096.

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

Solution

The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original can be found at CISA.gov.

Rockwell Automation recommends users apply the latest version of firmware when possible:

Plugin Details

Severity: Critical

ID: 500904

Version: 1.6

Type: remote

Family: Tenable.ot

Published: 3/28/2023

Updated: 3/4/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

CVSS Score Source: CVE-2019-5096

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

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

Vulnerability Information

CPE: cpe:/h:rockwellautomation:1747-aentr, cpe:/h:rockwellautomation:1769-aentr, cpe:/h:rockwellautomation:5069-aen2tr, cpe:/h:rockwellautomation:1756-en2tr_series_c, cpe:/h:rockwellautomation:1756-en2t_series_d, cpe:/h:rockwellautomation:1756-en2tsc_series_a, cpe:/h:rockwellautomation:1756-en2tsc_series_b, cpe:/h:rockwellautomation:1756-hist1g_series_a, cpe:/h:rockwellautomation:1756-hist2g_series_a, cpe:/h:rockwellautomation:1756-hist2g_series_b

Required KB Items: Tenable.ot/Rockwell

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/3/2019

Vulnerability Publication Date: 12/3/2019

Reference Information

CVE: CVE-2019-5096

CWE: 416

Detections

Analytics