The system must not process ICMP timestamp requests.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22409	GEN003602	SV-26621r2_rule		Low

Description
The processing of Internet Control Message Protocol (ICMP) timestamp requests increases the attack surface of the system.

STIG	Date
SOLARIS 10 X86 SECURITY TECHNICAL IMPLEMENTATION GUIDE	2018-04-10

Details

Check Text ( C-27659r2_chk )
Determine the type of zone that you are currently securing. # zonename If the zone is not the global zone, determine if any interfaces are exclusive to the zone: # dladm show-link If the output indicates "insufficient privileges" then this requirement is not applicable. If the zone is the global zone or the non-global zone has exclusive interfaces verify the system does not respond to ICMP timestamp requests. # ndd /dev/ip ip_respond_to_timestamp If the result is not 0, this is a finding.

Check Text ( C-27659r2_chk )

Determine the type of zone that you are currently securing.
# zonename

If the zone is not the global zone, determine if any interfaces are exclusive to the zone:
# dladm show-link

If the output indicates "insufficient privileges" then this requirement is not applicable.

If the zone is the global zone or the non-global zone has exclusive interfaces verify the system does not respond to ICMP timestamp requests.
# ndd /dev/ip ip_respond_to_timestamp

If the result is not 0, this is a finding.

Fix Text (F-23864r1_fix)
Disable ICMP timestamp responses on the system. # ndd -set /dev/ip ip_respond_to_timestamp 0 Also add this command to a system startup script.