CVE-2023-45239 (fedora, tac_plus)

A lack of input validation exists in tac_plus prior to commit 4fdf178 which, when pre or post auth commands are enabled, allows an attacker who can control the username, rem-addr, or NAC address sent to tac_plus to inject shell commands and gain remote code execution on the tac_plus server.

address attacker auth code code execution commit control cve fedora inject input input validation nac remote code remote code execution server shell username validation