#VU25526 Use of hard-coded credentials in AWK-3131A Series - CVE-2019-5139

Vulnerability identifier: #VU25526

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/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-2019-5139

CWE-ID: CWE-798

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
AWK-3131A Series
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Moxa

Description

The vulnerability allows a remote attacker to gain unauthorized access to vulnerable system.

The vulnerability exists due to presence of hard-coded credentials in multiple iw_* utilities. A remote unauthenticated attacker can access the affected system using the hard-coded credentials and create the custom diagnostic scripts.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

AWK-3131A Series: 1.13

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External links
https://www.moxa.com/en/support/support/security-advisory/awk-3131a-series-industrial-ap-bridge-client-vulnerabilities
https://talosintelligence.com/vulnerability_reports/TALOS-2019-0928

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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.