Phoenix Contact: Firewall reconfiguration through the FW_environment variables in MGUARD devices

8.1 CVSS

Vulnerability Description

A low privileged remote attacker can perform configuration changes of the firewall services, including packet filter, packet forwarding, network access control or NAT through the FW_INCOMING.FROM_IP FW_INCOMING.IN_IP FW_OUTGOING.FROM_IP FW_OUTGOING.IN_IP environment variable which can lead to a DoS.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

Andrea Palanca
Nozomi Networks Security Research Team

References

https://cert.vde.com/en/advisories/VDE-2024-039

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Affected Software

FL MGUARD 2102, FL MGUARD 2105, FL MGUARD 4102 PCI, FL MGUARD 4102 PCIE, FL MGUARD 4302, FL MGUARD 4305, FL MGUARD CENTERPORT VPN-1000, FL MGUARD CORE TX, FL MGUARD CORE TX VPN, FL MGUARD DELTA TX/TX, FL MGUARD DELTA TX/TX VPN, FL MGUARD GT/GT, FL MGUARD GT/GT VPN, FL MGUARD PCI4000, FL MGUARD PCI4000 VPN, FL MGUARD PCIE4000, FL MGUARD PCIE4000 VPN, FL MGUARD RS2000 TX/TX-B, FL MGUARD RS2000 TX/TX VPN, FL MGUARD RS2005 TX VPN, FL MGUARD RS4000 TX/TX, FL MGUARD RS4000 TX/TX-M, FL MGUARD RS4000 TX/TX-P, FL MGUARD RS4000 TX/TX VPN, FL MGUARD RS4004 TX/DTX, FL MGUARD RS4004 TX/DTX VPN, FL MGUARD SMART2, FL MGUARD SMART2 VPN, TC MGUARD RS2000 3G VPN, TC MGUARD RS2000 4G ATT VPN, TC MGUARD RS2000 4G VPN, TC MGUARD RS2000 4G VZW VPN, TC MGUARD RS4000 3G VPN, TC MGUARD RS4000 4G ATT VPN, TC MGUARD RS4000 4G VPN, TC MGUARD RS4000 4G VZW VPN

Vulnerable Versions: