CVE-2018-5399

The Auto-Maskin DCU 210E firmware contains an undocumented Dropbear SSH server, v2015.55, configured to listen on Port 22 while the DCU is running and is configured with a hard-coded credentials

Description

The Auto-Maskin DCU 210E firmware contains an undocumented Dropbear SSH server, v2015.55, configured to listen on Port 22 while the DCU is running. The Dropbear server is configured with a hard-coded user name and password combination of root / amroot. The server is configured to use password only authentication not cryptographic keys, however the firmware image contains an RSA host-key for the server. An attacker can exploit this vulnerability to gain root access to the Angstrom Linux operating system and modify any binaries or configuration files in the firmware. Affected releases are Auto-Maskin DCU-210E RP-210E: Versions prior to 3.7 on ARMv7.

Remediation

Solution:

  • End-users should log-in via the SSH server and remove it as a service, or change the hard-coded password to SP 800-63B standards.

Workaround:

  • End-users should log-in via the SSH server and remove it as a service, or change the hard-coded password to SP 800-63B standards.

Category

9.4
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.21%
Third-Party Advisory cert.org
Affected: Auto-Maskin DCU-210E
Affected: Auto-Maskin RP-210E
Published at:
Updated at:

References

Link Tags
https://www.kb.cert.org/vuls/id/176301 third party advisory us government resource
https://www.us-cert.gov/ics/advisories/icsa-20-051-04

Frequently Asked Questions

What is the severity of CVE-2018-5399?
CVE-2018-5399 has been scored as a critical severity vulnerability.
How to fix CVE-2018-5399?
To fix CVE-2018-5399: End-users should log-in via the SSH server and remove it as a service, or change the hard-coded password to SP 800-63B standards.
Is CVE-2018-5399 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-5399 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-5399?
CVE-2018-5399 affects Auto-Maskin DCU-210E, Auto-Maskin RP-210E.
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