CWE
119
Advisory Published
Updated

CVE-2017-18046: Buffer Overflow

First published: Sun Jan 21 2018(Updated: )

Buffer overflow on Dasan GPON ONT WiFi Router H640X 12.02-01121 2.77p1-1124 and 3.03p2-1146 devices allows remote attackers to execute arbitrary code via a long POST request to the login_action function in /cgi-bin/login_action.cgi (aka cgipage.cgi).

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Dasannetworks H640x Firmware=2.77p1-1124
Dasannetworks H640x Firmware=3.03p2-1146
Dasannetworks H640x Firmware=12.02-01121
Dasannetworks H640x

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Frequently Asked Questions

  • What is the severity of CVE-2017-18046?

    CVE-2017-18046 is considered a high severity vulnerability due to its potential for remote code execution.

  • How do I fix CVE-2017-18046?

    To mitigate CVE-2017-18046, update the firmware of the Dasan GPON ONT WiFi Router H640X to a version that does not contain the buffer overflow vulnerability.

  • What devices are affected by CVE-2017-18046?

    CVE-2017-18046 affects Dasan GPON ONT WiFi Router H640X devices running firmware versions 2.77p1-1124, 3.03p2-1146, and 12.02-01121.

  • What type of attack does CVE-2017-18046 exploit?

    CVE-2017-18046 can be exploited through a long POST request to the login_action function in the router's CGI scripts.

  • Is there any workaround for CVE-2017-18046 until a fix is available?

    A practical workaround for CVE-2017-18046 includes disabling remote management features on the Dasan GPON ONT WiFi Router H640X.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203