CVE-2017-18368 Zyxel P660HN-T1A Routers: command or code injection
In plain words: The program treats text it receives as instructions instead of plain data. The attacker can run commands on the machine — often the whole device is taken over.
Confirmed exploited by CISA on · US federal patch deadline Aug 28, 2023
What to do
- Install Zyxel's security update for P660HN-T1A Routers. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Turn on automatic firmware updates and replace gear the maker no longer supports.
- Change default passwords and switch off remote administration and features you do not use.
- Do not put storage boxes or cameras directly on the internet — use the maker's app or a VPN.
Who is affected
Could reach you. This one is aimed at devices or apps of the kind people own.
What's at risk: Taken over in bulk to join botnets, used to watch your traffic, or — for storage boxes — locked by ransomware.
The details
- Official name
- Zyxel P660HN-T1A Routers Command Injection Vulnerability
- Product
- Zyxel P660HN-T1A Routers
- CISA description
- Zyxel P660HN-T1A routers contain a command injection vulnerability in the Remote System Log forwarding function, which is accessible by an unauthenticated user and exploited via the remote_host parameter of the ViewLog.asp page.
- Type of flaw
- Command or code injection (CWE-78)
- Confirmed exploited
- Aug 7, 2023
- US federal patch deadline
- Aug 28, 2023
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Answering about CVE-2017-18368 ·
Questions about CVE-2017-18368
Is CVE-2017-18368 being exploited?
Yes. CISA added CVE-2017-18368 to its Known Exploited Vulnerabilities catalog on Aug 7, 2023, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2017-18368?
Install Zyxel's security update for P660HN-T1A Routers. If no update exists, follow the vendor's workaround or stop using the product until one ships. Turn on automatic firmware updates and replace gear the maker no longer supports.
Am I affected by CVE-2017-18368?
Only if you use Zyxel P660HN-T1A Routers. This one is aimed at devices or apps of the kind people own.