CVE-2019-6520 — Moxa IKS and EDS does not properly check authority on server side, which results

Moxa IKS and EDS does not properly check authority on server side, which results in a read-only user being able to perform arbitrary configuration changes.

01What is this vulnerability?

Moxa IKS and EDS does not properly check authority on server side, which results in a read-only user being able to perform arbitrary configuration changes.

02Affected products

Vendor	Product	Versions
ICS-CERT	Moxa IKS, EDS	IKS-G6824A series Versions 4.5 and prior, EDS-405A series Version 3.8 and prior, EDS-408A series Version 3.8 and prior, and EDS-510A series Version 3.8 and prior

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2019-03-05T21:00:00.000Z
• Last modified: 2024-09-16T19:01:03.479Z

09References

• ics-cert.us-cert.gov — https://ics-cert.us-cert.gov/advisories/ICSA-19-057-01
• www.securityfocus.com — http://www.securityfocus.com/bid/107178