What is CVE-2017-18046?

CVE-2017-18046 is a critical-severity vulnerability in Dasannetworks H640x, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2018-01-21.

How severe is CVE-2017-18046?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Dasannetworks H640x

CVE-2017-18046

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).

Vulnerability class: Buffer Overflow

EPSS: 0.050 (91.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Dasannetworks H640x
Dasannetworks H640x_firmware — versions 2.77p1-1124, 3.03p2-1146, 12.02-01121
N/a — versions n/a

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

cve@mitre.org (x_refsource_MISC)
cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (x_refsource_MISC)

Frequently asked questions

What is CVE-2017-18046?: CVE-2017-18046 is a critical-severity vulnerability in Dasannetworks H640x, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2018-01-21.
How severe is CVE-2017-18046?: Critical severity. CVSS v3 base score is 9.8 out of 10.