CVE-2018-5400
CVE-2018-5400 — The Auto-Maskin DCU 210E, RP-210E, and Marine Pro Observer Android App utilize an undocumented custom protocol to set up Modbus communications with other device
The Auto-Maskin products utilize an undocumented custom protocol to set up Modbus communications with other devices without validating those devices. The originating device sends a message in plaintext, 48:65:6c:6c:6f:20:57:6f:72:6c:64, "Hello World" over UDP ports 44444-44446 to the broadcast address for the LAN. Without verification devices respond to any of these broadcast messages on the LAN with a plaintext reply over UDP containing the device model and firmware version. Following this exchange the devices allow Modbus transmissions between the two devices on the standard Modbus port 502 TCP. Impact: An attacker can exploit this vulnerability to send arbitrary messages to any DCU or RP device through spoofing or replay attacks as long as they have access to the network. Affected releases are Auto-Maskin DCU-210E RP-210E: Versions prior to 3.7 on ARMv7.
Published Updated Sources: cvelistV5, certcc
Triage
Is it exploited, how likely is exploitation, what does it touch, and how severe do the scoring sources call it.
Exploitation
Unreported
no source claims exploitation
EPSS
1%
chance of exploitation in 30 days
CVSS base
9.1
CRITICAL
Affected scope
The catalog records vendors and products as separate lists, not pairs, so which product belongs to which vendor is not something this page can say.
Vendors (1)
Products (3)
Every base score collected
Sources score independently and disagree; each row says who scored it and under which version.
| Score | Version | Severity | Expl. | Impact | Source |
|---|---|---|---|---|---|
| 9.1 | CVSS 3.0 | CRITICAL | — | — | cvelistV5 |
Weakness & attack patterns
- CWE-346
Attack patterns reported against this CVE. The ATT&CK techniques below are inferred from its weakness class.
- T1557.002Adversary-in-the-Middle: ARP Cache Poisoning
- T1584.002Compromise Infrastructure: DNS Server
- T1134Access Token Manipulation
References
2 on the record
- www.kb.cert.org/vuls/id/176301
third-party-advisory, x_refsource_CERT-VN
- www.us-cert.gov/ics/advisories/icsa-20-051-04
x_refsource_MISC
Elsewhere on this site
- auto maskinevery CVE for this vendor
- CWE-346other pages naming this weakness
Not in any source we poll
Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.
- No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
- No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
- No exploit packet captures, log samples, or incident case IDs supplied.