CVE-2017-18368: Zyxel P660HN-T1A Routers Command Injection Vulnerability
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.
| Vendor | Zyxel |
|---|---|
| Product | P660HN-T1A Routers |
| Date added to KEV | 2023-08-07 |
| Due date (BOD 22-01) | 2023-08-28 |
| Known ransomware campaign use | Unknown |
| CWE | CWE-78 |
| Required action | Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. |
What to do
- Identify every instance of Zyxel P660HN-T1A Routers in your environment (asset inventory, EDR, vulnerability scanner).
- Apply CISA's required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- Federal civilian agencies must act by 2023-08-28 under BOD 22-01; other organizations can use the same date as a target.
- Check the vendor advisory and NVD entry linked below for affected versions, then record the fix in your change log.
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Sources
- NVD entry for CVE-2017-18368 (severity scores, if any, live there)
- CISA KEV catalog entry
- https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-a-new-variant-of-gafgyt-malware
- https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-command-injection-vulnerability-in-p660hn-t1a-dsl-cpe
- https://nvd.nist.gov/vuln/detail/CVE-2017-18368