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Check: GEN003604

VMware ESX 3 Server: GEN003604 (in version v1 r2)

Title

The system must not respond to ICMP timestamp requests sent to a broadcast address. (Cat II impact)

Discussion

The processing of Internet Control Message Protocol (ICMP) timestamp requests increases the attack surface of the system. Responding to broadcast ICMP timestamp requests facilitates network mapping and provides a vector for amplification attacks.

Check Content

Determine if the system is configured to respond to ICMP Timestamp requests sent to broadcast addresses. If so, this is a finding.

Fix Text

Configure the system to ignore ICMP Timestamp requests sent to broadcast addresses.

Additional Identifiers

Rule ID: SV-26074r1_rule

Vulnerability ID: V-22411

Group Title: GEN003604

Expert Comments

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CCIs

CCIs tied to check.

Number	Definition
CCI-001551	The organization defines approved authorizations for controlling the flow of information between interconnected systems.

Controls

Controls tied to check. These are derived from the CCIs shown above.

Number	Title
AC-4	Information Flow Enforcement