#VU69638 Input validation error in Moxa products

Vulnerability identifier: #VU69638

Vulnerability 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

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Moxa EDR-810
Server applications / SCADA systems
EDR-G902 Series
Hardware solutions / Routers & switches, VoIP, GSM, etc
EDR-G903 Series
Hardware solutions / Routers & switches, VoIP, GSM, etc
TN-5916
Hardware solutions / Routers & switches, VoIP, GSM, etc
TN-4900
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Moxa

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.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Moxa EDR-810: 5.0 - 5.12

EDR-G902 Series: 5.0 - 5.7

EDR-G903 Series: 5.0 - 5.7

TN-5916: 3.2

TN-4900: 1.0

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External links
https://www.moxa.com/en/support/product-support/security-advisory/secure-router-edr-and-tn-series-improper-input-validation-vulnerabilities
https://www.moxa.com/en/support/product-support/security-advisory/secure-router-edr-and-tn-series-improper-input-validation-vulnerabilities

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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