CVE-2017-18368 on CISA KEV

The ZyXEL P660HN-T1A v1 TCLinux Fw $7.3.15.0 v001 / 3.40(ULM.0)b31 router distributed by TrueOnline has a command injection vulnerability in the Remote System Log forwarding function, which is accessible by an unauthenticated user. The vulnerability is in the ViewLog.asp page and

01What CISA says about this vulnerability

The ZyXEL P660HN-T1A v1 TCLinux Fw $7.3.15.0 v001 / 3.40(ULM.0)b31 router distributed by TrueOnline has a command injection vulnerability in the Remote System Log forwarding function, which is accessible by an unauthenticated user. The vulnerability is in the ViewLog.asp page and can be exploited through the remote_host parameter.

02Required action — verbatim from CISA

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

03Notes & references

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

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
n	a / n/a	n/a

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

Open in Sigma generator →