Threat database

Netis NX10 firmware V4.0.1.5808 and V3.0.0.4142 contain an OS command injection vulnerability in the ping diagnostic handler that allows authenticated administrators to execute arbitrary shell commands as root by injecting into the IpAddr parameter. The parameter is interpolated directly into a shell command executed through system() with an incomplete denylist that only blocks spaces, pipes, semicolons, and ampersands, leaving command substitution and alternate field separator expansion available for exploitation.

Netis NX10 firmware V4.0.1.5808 and V3.0.0.4142 contain an information disclosure vulnerability that allows unauthenticated attackers to retrieve the administrator password by sending a request to the sysinfo action in the web management interface without a valid session. Attackers can replay the exposed credential against the login handler to establish a fully authenticated administrator session on the device.

Netis NC63 firmware up to version 3.0.0.3327 contains a critical stack-based buffer overflow vulnerability. This flaw allows unauthenticated remote attackers to overwrite the saved stack state by sending an oversized destHost parameter to the ipFilterList=mod action in netis.cgi. The vulnerability arises from unsafe sscanf conversions that copy user input into fixed-size stack buffers before authentication is checked. Exploitation can lead to remote code execution with root privileges due to the Boa web server running CGI scripts as root.

Netis NC63 firmware through V3.0.0.3327 contains a stack-based buffer overflow vulnerability that allows unauthenticated remote attackers to overwrite saved stack state by submitting an oversized Base64-encoded password to the login handler in /bin/netis.cgi. Attackers can exploit the custom Base64 decoder's lack of output length validation against the fixed-size stack buffer to achieve remote code execution with root privileges, as the Boa web server executes the CGI environment as root.

Netis NC63 router firmware V3.0.0.3327 contains an unauthenticated firmware update vulnerability that allows unauthenticated attackers to submit unsigned firmware images by exploiting a missing authentication enforcement flaw in the Boa web server and netis.cgi CGI dispatcher. Attackers can send a multipart POST request to /cgi-bin/upload_fw.cgi without a valid session cookie, bypassing authentication because Boa grants access to any path containing '.cgi' regardless of cookie validation, and netis.cgi reads but does not enforce the authentication state before invoking the firmware update handler, which accepts images validated only by a forgeable additive checksum and static product strings rather than a cryptographic signature, potentially enabling persistent router compromise.