CVE-2021-45039 Information

Description

Multiple models of the Uniview IP Camera (e.g. IPC_G6103 B6103.16.10.B25.201218 IPC_G61 IPC21 IPC23 IPC32 IPC36 IPC62 and IPC_HCMN) offer an undocumented UDP service on port 7788 that allows a remote unauthenticated attacker to overflow an internal buffer and achieve code execution. By using this buffer overflow a remote attacker can start the telnetd service. This service has a hardcoded default username and password (root/123456). Although it has a restrictive shell this can be easily bypassed via the built-in ECHO shell command.

Reference

https://ssd-disclosure.com/ssd-advisory–uniview-preauth-rce/ https://www.uniview.com/About_Us/Security/Notice/202112/920471_140493_0.htm