Huawei eSpace IAD Information Disclosure

`Title: Huawei eSpace IAD Remote Information Disclosure Vulnerability  
Software : eSpace IAD  
  
Software Version :   
Equipment type : eSpace IAD208E(M)  
PCB version : AG21CSPG VER.A  
Product name : TS0801 and TS0802  
Program version : V300R001C07SPC800  
BIOS version : 1035  
Slic version : 000  
CPLD version : (U16)101  
DSP version : VoIP V100R003C01  
  
Vendor: www.huawei.com  
  
Vulnerability Published : 2016-07-30  
  
Author：zhiwei_jiang   
Email:[email protected]  
Impact :  
CVSS Severity (version 2.0):  
CVSS v2 Base Score: 5.0 MEDIUM  
Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:N) (legend)  
Impact Subscore: 2.9  
Exploitability Subscore: 10.0  
CVSS Version 2 Metrics:  
Access Vector: Network exploitable  
Access Complexity: Low  
Authentication: Not required to exploit  
Impact Type: Allows unauthorized disclosure of information  
  
Bug Description :  
The eSpace IAD Series Access Devices  
Migrating to IP telephony? Huaweis eSpace Integrated Access Device (IAD) Series lets you support existing analog equipment to extend the useful life of legacy phones and fax machines. Available in a compact desktop model for a small office with 4 devices, or a 2U rack-mount system with up to 224 ports, providing Foreign eXchange Subscriber (FXS) interfaces.  
Reliability features including triple homing, power-off survival, and network outage survival with multiple QoS mechanisms ensure high-availability, as well as high-quality voice services.  
Integrates seamlessly with Huawei IP telephony and multimedia communications solutions.  
  
eSpace IAD (ver Equipment type : eSpace IAD208E(M) Product name : TS0801 and TS0802 Program version : V300R001C07SPC800 ) an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions,Download sensitive data.   
  
PoC:  
http://x.x.x.x/goform/downloadIadInfomation  
  
  
Solution :  
  
  
For web applications, make sure that the access control mechanism is enforced correctly at the server side on every page. Users should not be able to access any unauthorized functionality or information by simply requesting direct access to that page.  
  
One way to do this is to ensure that all pages containing sensitive information are not cached, and that all such pages restrict access to requests that are accompanied by an active and authenticated session token associated with a user who has the required permissions to access that page.  
`