Changes are coming to https://stigviewer.com.
Take our survey to help us understand your usage and how we can better serve you in the future.
Take Survey
The system must not respond to ICMPv6 echo requests sent to a broadcast address.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-23972 | GEN007950 | SV-45993r1_rule | ECSC-1 | Medium |
| Description |
|---|
| Responding to broadcast ICMP echo requests facilitates network mapping and provides a vector for amplification attacks. |
| STIG | Date |
|---|---|
| SUSE Linux Enterprise Server v11 for System z | 2013-04-18 |
Details
| Check Text ( C-43275r1_chk ) |
|---|
| Check for an ip6tables rule that drops inbound IPv6 ICMP ECHO_REQUESTs sent to the all-hosts multicast address. Procedure: # less /etc/sysconfig/scripts/SuSEfirewall2-custom Check for a rule in, or referenced by, the INPUT chain such as: ip6tables -A INPUT -p icmpv6 -d ff02::1 --icmpv6-type 128 -j DROP If such a rule does not exist, this is a finding. |
| Fix Text (F-39358r1_fix) |
|---|
| Add an ip6tables rule that drops inbound IPv6 ICMP ECHO_REQUESTs sent to the all-hosts multicast address. Edit /etc/sysconfig/scripts/SuSEfirewall2-custom and add a rule in, or referenced by, the INPUT chain such as: ip6tables -A INPUT -p icmpv6 -d ff02::1 --icmpv6-type 128 -j DROP Reload the SuSEfirewall2 rules. Procedure: # rcSuSEfirewall2 restart |