Headline

CVE-2021-46082: MGate 5109 and MGate 5101-PBM-MN Series Protocol Gateways Vulnerability

Moxa TN-5900 v3.1 series routers, MGate 5109 v2.2 series protocol gateways, and MGate 5101-PBM-MN v2.1 series protocol gateways were discovered to contain a memory leak which allows attackers to cause a Denial of Service (DoS) via crafted packets.

2 years ago

CVE

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#vulnerability #dos

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SUMMARY

MGate 5109 and MGate 5101-PBM-MN Series Protocol Gateways Vulnerability

Version: V1.0
Release Date: Dec 28, 2021
Reference:
- N/A

A product vulnerability was identified in Moxa’s MGate 5109 and MGate 5101-PBM-MN Series Protocol Gateways. In response to this, Moxa has developed related solutions to address this vulnerability.

The identified vulnerability types and potential impacts are shown below:

Item

Vulnerability Type

Impact

Memory Leak

Continuously sending crafted packets may cause an affected device to experience a memory leak and fail to release memory when it is no longer required.

AFFECTED PRODUCTS AND SOLUTIONS

Affected Products:

The affected products and firmware versions are shown below.

Product Series

Affected Versions

MGate 5109 Series Protocol Gateway

Firmware Version 2.2 or lower.

MGate 5101-PBM-MN Series Protocol Gateway

Firmware Version 2.1 or lower.

Solutions:

Moxa has developed appropriate solutions to address the vulnerabilities. The solutions for affected products are shown below.

Product Series

Solutions

MGate 5109 Series Protocol Gateway

Please upgrade to firmware version 2.3 or higher.(Download)

MGate 5101-PBM-MN Series Protocol Gateway

Please upgrade to firmware version 2.2 or higher. (Download)

Acknowledgment:

We would like to express our appreciation to Qian Chen from the Codesafe Team of Legendsec at Qi’anxin Group for reporting the vulnerability, working with us to help enhance the security of our products, and helping us provide a better service to our customers.

Revision History:

VERSION

DESCRIPTION

RELEASE DATE

1.0

First Release

Dec 28, 2021

Relevant Products

MGate 5101-PBM-MN Series · MGate 5109 Series ·

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Related Advisories

MGate MB3000 Series, MGate 5100 Series, and MGate W5000 Series Protocol Gateway Vulnerabilities
Moxa’s Response Regarding SSLv2 Vulnerabilities (DROWN, CVE-2016-0800)
Moxa’s Response Regarding the GNU Glibc Gethostbyname Function Buffer Overflow Vulnerability (GHOST, CVE-2015-0235)

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