CVE-2017-18371

EPSS 22.5%

Vexday Risk Score

23Low

SSVC decision (CISA)

Attend

PoC available → attend closely

Exploit maturity

Functional exploit

Automatable exploit available (Nuclei/Metasploit).

CVSS —EPSS 22.5%KEV nãoPoC —Nuclei —Metasploit simPatch —

Lifecycle

26 Dec 2016Metasploit module available

02 May 2019Published on NVD

Recommendation: Plan a near-term fix — a public PoC already exists.

The ZyXEL P660HN-T1A v2 TCLinux Fw #7.3.37.6 router distributed by TrueOnline has three user accounts with default passwords, including two hardcoded service accounts: one with the username true and password true, and another with the username supervisor and password zyad1234. These accounts can be used to login to the web interface, exploit authenticated command injections, and change router settings for malicious purposes.

Affected products

n/a · n/a

References

https://raw.githubusercontent.com/pedrib/PoC/master/advisories/zyxel_trueonline.txt https://seclists.org/fulldisclosure/2017/Jan/40 https://ssd-disclosure.com/index.php/archives/2910 https://unit42.paloaltonetworks.com/new-mirai-variant-targets-enterprise-wireless-presentation-display-systems/http://www.zyxel.com/support/announcement_unauthenticated.shtml