The HTTPD binary in multiple ZTE routers has a local file inclusion vulnerability in session_init function. The session -LUA- files are stored in the directory /var/lua_session, the function iterates on all files in this directory and executes them using the function dofile without any validation if it is a valid session file or not. An attacker who is able to write a malicious file in the sessions directory can get RCE as root.

References

• https://nvd.nist.gov/vuln/detail/CVE-2024-45416
• https://wr3nchsr.github.io/zte-multiple-routers-httpd-vulnerabilities-advisory