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The IPv6 protocol handler must be prevented from dynamic loading unless needed.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-22542 | GEN007720 | SV-37609r1_rule | ECSC-1 | Medium |
| Description |
|---|
| IPv6 is the next generation of the Internet protocol. Binding this protocol to the network stack increases the attack surface of the host. Unprivileged local processes may be able to cause the system to dynamically load a protocol handler by opening a socket using the protocol. |
| STIG | Date |
|---|---|
| Red Hat Enterprise Linux 5 Security Technical Implementation Guide | 2014-01-09 |
Details
| Check Text ( C-36786r1_chk ) |
|---|
| If this system uses IPv6, this is not applicable. Verify the IPv6 protocol handler is prevented from dynamic loading. # grep 'install ipv6 /bin/true' /etc/modprobe.conf /etc/modprobe.d/* If no result is returned, this is a finding. |
| Fix Text (F-31644r1_fix) |
|---|
| Prevent the IPv6 protocol handler for dynamic loading. # echo "install ipv6 /bin/true" >> /etc/modprobe.conf |