Phoenix Contact: Multiple Vulnerabilities in FL SWITCH 2xxx, FL SWITCH TSN 23xx and FL SWITCH 59xx Firmware

High

A remote attacker with user privileges for the webUI can use the setting of the TFTP Filename with a POST Request to trigger a stack-based Buffer Overflow, resulting in a DoS attack.

CWE-121 - Stack-based Buffer Overflow

A command injection vulnerability in the device’s Root CA certificate transfer workflow allows a high-privileged attacker to send crafted HTTP POST requests that result in arbitrary command execution on the underlying Linux OS with root privileges.

CWE-77 - Improper Neutralization of Special Elements used in a Command ('Command Injection')

A stack-based buffer overflow vulnerability in the device's file transfer parameter workflow allows a high-privileged attacker to send oversized POST parameters, causing memory corruption in an internal process, resulting in a DoS attack.

CWE-121 - Stack-based Buffer Overflow

A stack-based buffer overflow in the device's file installation workflow allows a high-privileged attacker to send oversized POST parameters that overflow a fixed-size stack buffer within an internal process, resulting in a DoS attack.

CWE-121 - Stack-based Buffer Overflow

A stack-based buffer overflow in the CLI's TFTP file‑transfer command handling allows a low-privileged attacker with Telnet/SSH access to trigger memory corruption by supplying unexpected or oversized filename input. Exploitation results in the corruption of the internal buffer, causing the CLI and web dashboard to become unavailable and leading to a denial of service.

CWE-121 - Stack-based Buffer Overflow