GHSA-rphv-h674-5hp2 Fleet Affected by Local Privilege Escalation via Tcl Command Injection in Orbit

• Go github.com/fleetdm/fleet/v4: < 4.81.1 → fixed in 4.81.1

Summary The Orbit agent's FileVault disk encryption key rotation flow on collects a local user's password via a GUI dialog and interpolates it directly into a Tcl/expect script executed via `exec.Command("expect", "-c", script)`. Because the password is inserted into Tcl brace-quoted `send {%s}`, a password containing `}` terminates the literal and injects arbitrary Tcl commands. Since Orbit runs as root, this allows a local unprivileged user to escalate to root privileges. CWE • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') • CWE-94: Improper Control of Generation of Code ('Code Injection') Impact • Local privilege escalation to root: Any unprivileged local user on a managed endpoint can execute arbitrary commands as root Credit This vulnerability was discovered and reported by bugbunny.ai.