Title: Synaccess netBooter NP-02x/NP-08x 6.8 Authentication Bypass Advisory ID: ZSL-2018-5500 Type: Local/Remote Impact: Security Bypass, System Access Risk: (5/5) Release Date: 17.11.2018 Summary: - netBooter™ NP-02B and NP-02BH provide independent control of one or two outlets in a small, robust form factor. Manageable via TCP/IP network or direct serial connection and 1U brackets (optional) for mounting. Control power to your devices with the ability to fit just about anywhere. - netBooter™ NP-0801DU and NP-0801DUH PDUs provide secured remote power source management of 8 independent outlets. Includes true RMS AC current reading and environment temperature monitoring via TCP/IP networks or local direct connection. Description: - netBooter suffers from an authentication bypass vulnerability due to missing control check when calling webNewAcct.cgi script while creating users. This allows an unauthenticated attacker to create admin user account and bypass authentication giving her the power to turn off a power supply to a resource. Vendor: - Synaccess Networks Inc. - https://www.synaccess-net.com Affected Version: - NP-0201D (ver 6.8C) - NP-02 (ver 6.5C) - NP-02 (ver 6.4BC) - NP-0801D (ver 6.4A4) - NP-08 (ver 6.10) - NP-02 (ver 5.53BC) Tested On: - Synaccess server Vendor Status: - [05.11.2018] Vulnerability discovered. - [06.11.2018] Vendor contacted. - [16.11.2018] No response from the vendor. - [17.11.2018] Public security advisory released. PoC: - netbooter_auth.txt Credits: - Vulnerability discovered by Gjoko Krstic - References: - [1] https://packetstormsecurity.com/files/150396 - [2] https://exchange.xforce.ibmcloud.com/vulnerabilities/153124 - [3] https://cxsecurity.com/issue/WLB-2018110158 - [4] https://www.exploit-db.com/exploits/45920 Changelog: - [17.11.2018] - Initial release - [20.11.2018] - Added reference [1] and [2] - [23.11.2018] - Added reference [3] - [01.12.2018] - Added reference [4] Contact**: - Zero Science Lab - Web: http://www.zeroscience.mk - e-mail: lab@zeroscience.mk