PT-2021-6068 · Moxa · Moxa Tn-5900

Published 2021-12-28 · Updated 2023-08-08 · CVE-2021-46559

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:C/A:N

Name of the Vulnerable Software and Affected Versions Moxa TN-5900 devices through 3.1

Description The issue is related to a weak algorithm used in the firmware of Moxa TN-5900 devices, which can be exploited by an attacker to defeat an inspection mechanism for integrity protection. This weakness is associated with deficiencies in the cryptographic algorithms used. As a result, a remote attacker may be able to impact data integrity.

Recommendations For Moxa TN-5900 devices through 3.1, consider updating the firmware to a version that addresses the weak algorithm issue, as this would likely resolve the integrity protection mechanism weakness. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Use of a Broken Cryptographic Algorithm

Insufficient Verification of Data Authenticity

Weakness Enumeration

CWE-327

CWE-345

Related Identifiers

BDU:2022-00674

CVE-2021-46559

Affected Products

Moxa Tn-5900

References · 5

• https://osv.dev/vulnerability/CVE-2021-46559 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-46559 · Security Note
• https://bdu.fstec.ru/vul/2022-00674 · Security Note
• https://moxa.com/en/support/product-support/security-advisory/tn-5900-secure-routers-vulnerabilities · Vendor Advisory
• https://t.me/cvenotify/26138 · Telegram Post