Synaccess netBooter NP-02x / NP-08x 6.8 Authentication Bypass

mk LiquidWorm (MK) mk
Risk: Medium
Local: No
Remote: Yes

Synaccess netBooter NP-02x/NP-08x 6.8 Authentication Bypass Vendor: Synaccess Networks Inc. Product web page: Affected version: NP-0201D (ver 6.8C) NP-02 (ver 6.5C) NP-02 (ver 6.4BC) NP-0801D (ver 6.4A) NP-08 (ver 6.10) NP-02 (ver 5.53BC) 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. Desc: 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. Tested on: Synaccess server Vulnerability discovered by Gjoko 'LiquidWorm' Krstic @zeroscience Advisory ID: ZSL-2018-5500 Advisory URL: 05.11.2018 -- PoC: curl -i --data "A1=hackerplusplus&A2=1234&A2=1234"

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