CISC-RT-000237 - The Cisco router must not be configured to use IPv6 Site Local Unicast addresses.

Information

As currently defined, site local addresses are ambiguous and can be present in multiple sites. The address itself does not contain any indication of the site to which it belongs. The use of site-local addresses has the potential to adversely affect network security through leaks, ambiguity, and potential misrouting as documented in section 2 of RFC3879. RFC3879 formally deprecates the IPv6 site-local unicast prefix FEC0::/10 as defined in RFC3513.

Solution

Configure the router using only authorized IPv6 addresses.

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Cisco_IOS_Router_Y22M07_STIG.zip

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-6b., CAT|II, CCI|CCI-000366, Rule-ID|SV-230041r532998_rule, STIG-ID|CISC-RT-000237, Vuln-ID|V-230041

Plugin: Cisco

Control ID: 2d336a8c0c853c05f1f61298b58f1fc57c2f643eb533372101b0bf7cf577a117