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Emerson Smart Wireless Gateway 1420 4.6.59 Missing Authentication

Emerson Smart Wireless Gateway 1420 4.6.59 Missing Authentication
Posted Mar 9, 2021
Authored by Harsha Bhat, Unmesh Guragol, Anish Mitra

Emerson Smart Wireless Gateway version 1420 4.6.59 suffers from a missing authentication vulnerability.

tags | exploit
advisories | CVE-2020-19419
SHA-256 | 06aa33191140047b5e8717710ba3b1dbdfe6c9620cc5e0b31b03529c81139fc0

Emerson Smart Wireless Gateway 1420 4.6.59 Missing Authentication

Change Mirror Download
Title: Missing access controls
Product: Emerson Smart Wireless Gateway
Vendor Homepage: http://emerson.com
Vulnerable Version: 1420 4.6.59
CVE Number: CVE-2020-19419
Authors: Harsha Bhat, Anish Mitra and Unmesh Guragol
Timeline:
2019-08-02 Disclosed to the vendor
2019-08-22 Vendor confirmed that the vulnerability was identified
internally and a fix was released in the latest version of firmware

1. Vulnerability Description

Incorrect Access Control in Emerson Smart Wireless Gateway 1420 4.6.59
allows remote attackers to obtain sensitive information (device log files)
on the administration console.

2. PoC

The PoC explained below is to obtain device logs without authentication.
The following requests will retrieve device log files stored on the device.

Access the following URL without authenticating into the administrator
console:
https://192.168.0.1/servlet/hartserver.txt


3. Solution

The vendor provides an updated version of firmware which should be
installed immediately.

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