Multiple vulnerabilities in Moxa Secure Router EDR and TN Series

Published: 2022-11-28 | Updated: 2022-11-29

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	N/A
CWE-ID	CWE-264 CWE-20
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	TN-5916 Hardware solutions / Routers & switches, VoIP, GSM, etc EDR-G902 Series Hardware solutions / Routers & switches, VoIP, GSM, etc EDR-G903 Series Hardware solutions / Routers & switches, VoIP, GSM, etc TN-4900 Hardware solutions / Routers & switches, VoIP, GSM, etc Moxa EDR-810 Server applications / SCADA systems
Vendor	Moxa

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU69637

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: N/A

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to application does not properly impose security restrictions. A remote attacker can edit the cookie’s values and cause security restrictions bypass and privilege escalation.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

TN-5916: 3.2

CPE2.3

External links

https://www.moxa.com/en/support/product-support/security-advisory/tn-5916-series-privilege-escalation-vulnerability

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Input validation error

EUVDB-ID: #VU69638

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: N/A

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can send a specially crafted HTTP/HTTPS request and perform a denial of service (DoS) attack.