Denial of service in Moxa EDR-G903, EDR-G902 and EDR-810

1) Buffer overflow

EUVDB-ID: #VU48107

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-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error. A remote attacker can send a specially crafted request, trigger memory corruption and cause a denial of service condition on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

EDR-G903 Series: 5.0 - 5.5

EDR-G902 Series: 5.0 - 5.5

Moxa EDR-810: 5.0 - 5.6

CPE2.3

• cpe:2.3:h:moxa:edr-g903_series:5.0:*:*:*:*:*:*:*
• cpe:2.3:h:moxa:edr-g903_series:5.3:*:*:*:*:*:*:*
• cpe:2.3:h:moxa:edr-g903_series:5.4:*:*:*:*:*:*:*
• cpe:2.3:h:moxa:edr-g902_series:5.0:*:*:*:*:*:*:*
• cpe:2.3:h:moxa:edr-g902_series:5.3:*:*:*:*:*:*:*
• cpe:2.3:h:moxa:edr-g902_series:5.4:*:*:*:*:*:*:*
• cpe:2.3:a:moxa:moxa_edr-810:5.0:*:*:*:*:*:*:*
• cpe:2.3:a:moxa:moxa_edr-810:5.1:*:*:*:*:*:*:*
• cpe:2.3:a:moxa:moxa_edr-810:5.2:*:*:*:*:*:*:*

External links

https://www.moxa.com/en/support/support/security-advisory/edr-g903-g902-810-secure-router-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.