Critical vulnerability in PHP

Critical vulnerability in PHP. Plan to patch immediately, especially for internet facing systems. Contact your vendor or see https://www.php.net for more information.

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YALE-MSS-10.2: Configure host firewalls to deny all unsolicited inbound traffic by default

Standards Group:
YALE-MSS-10: Network Exposure

YALE-MSS-10.2: Configure host firewalls to deny all unsolicited inbound traffic by default

Low Risk Endpoint Not Required Moderate Risk Endpoint Required High Risk Endpoint Required Low Risk Server Not Required Moderate Risk Server Required High Risk Server Required Low Risk Mobile Device Not Required Moderate Risk Mobile Device Not Required High Risk Mobile Device Not Required Low Risk Network Printer Not Required Moderate Risk Network Printer Not Required High Risk Network Printer Not Required

Details

A properly configured host firewall is an element of layered defense that reduces the attack surface of a system.

Deny all incoming network connections by default, ensuring only traffic that is explicitly authorized is permitted.