#VU17867 Cleartext transmission of sensitive information in Moxa products - CVE-2019-6526

Vulnerability identifier: #VU17867

Vulnerability risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-6526

CWE-ID: CWE-319

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
Moxa EDS-510A
Server applications / SCADA systems
Moxa EDS-408A
Server applications / SCADA systems
Moxa EDS-405A
Server applications / SCADA systems

Vendor: Moxa

Description

The vulnerability allows a remote attacker to obtain sensitive information.

The vulnerability exists due to Moxa EDS industrial switches use proprietary protocols that cannot be disabled. A remote attacker with ability to perform MitM attack can recover an administrator's password from the unlock function.

Mitigation
Request updates from vendor's technical support.

Vulnerable software versions

Moxa EDS-510A: 2.6 - 3.8

Moxa EDS-408A: 2.6 - 3.8

Moxa EDS-405A: 2.6 - 3.8

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External links
https://ics-cert.us-cert.gov/advisories/ICSA-19-057-01
https://www.moxa.com/en/support/product-support/security-advisory/eds-405a-series-eds-408a-series-ed...

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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 local network (LAN).

Is there known malware, which exploits this vulnerability?

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