The system must not respond to ICMP timestamp requests sent to a broadcast address.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-22411 | GEN003604 | SV-38798r1_rule | ECSC-1 | Medium |
| Description |
|---|
| 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. |
| STIG | Date |
|---|---|
| AIX 5.3 SECURITY TECHNICAL IMPLEMENTATION GUIDE | 2014-10-03 |
Details
| Check Text ( C-37254r1_chk ) |
|---|
| # /usr/sbin/no -o bcastping If the value returned is not 0, this is a finding. |
| Fix Text (F-32494r1_fix) |
|---|
| Configure the system to ignore ICMP Timestamp requests sent to broadcast addresses. #no -po bcastping=0 |