GPON ONT Home Gateway Router is vulnerable to authentication bypass (CVE-2018-10561)

critical Nessus Plugin ID 119776

Language:

New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The remote host is affected by an authentication bypass vulnerability.

Description

An issue was discovered in GPON ONT Home Gateway Router web administration interface. It is possible to bypass authentication of web interface by using the following approach:
- http(s)://<Router IP>/<some file>?images/
- http(s)://<Router IP>/<some file>?style/
- http(s)://<Router IP>/<some file>?script/
- http(s)://<Router IP>/images/../<some file>
- http(s)://<Router IP>/style/../<some file>
- http(s)://<Router IP>/script/../<some file> For example, '/menu.html?images/' or '/GponForm/diag_FORM?images/' URI.
This allows an attacker to fully control the target device.

Solution

Consult your vendor for a patch or a workaround.

See Also

https://www.vpnmentor.com/blog/critical-vulnerability-gpon-router/

Plugin Details

Severity: Critical

ID: 119776

File Name: gpon_cve-2018-10561.nbin

Version: 1.35

Type: remote

Family: Web Servers

Published: 12/19/2018

Updated: 7/22/2021

Dependencies: gpon_router_detect.nbin

Risk Information

CVSS Score Source: CVE-2018-10561

VPR

Risk Factor: Critical

Score: 9.5

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: E:H/RL:OF/RC:C

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.4

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: E:H/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:dasannetworks:gpon_router

Required KB Items: installed_sw/GPON HG

Exploit Available: true

Exploit Ease: Exploits are available

Exploited by Nessus: true

Vulnerability Publication Date: 5/3/2018

Reference Information

CVE: CVE-2018-10561

EDB-ID: 44576