The Dell OS10 Router must be configured to authenticate all routing protocol messages using NIST-validated FIPS 198-1 message authentication code algorithm.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-269869	SRG-NET-000168-RTR-000078	OS10-RTR-000300	SV-269869r1051992_rule	2024-12-11	1

Description
A rogue router could send a fictitious routing update to convince a site's perimeter router to send traffic to an incorrect or even a rogue destination. This diverted traffic could be analyzed to learn confidential information about the site's network or used to disrupt the network's ability to communicate with other networks. This is known as a "traffic attraction attack" and is prevented by configuring neighbor router authentication for routing updates. However, using clear-text authentication provides little benefit since an attacker can intercept traffic and view the authentication key. This would allow the attacker to use the authentication key in an attack. Since MD5 is vulnerable to "birthday" attacks and may be compromised, routing protocol authentication must use FIPS 198-1 validated algorithms and modules to encrypt the authentication key. This requirement applies to all IPv4 and IPv6 protocols that are used to exchange routing or packet forwarding information; this includes all Interior Gateway Protocols (such as OSPF, EIGRP, and IS-IS) and Exterior Gateway Protocols (such as BGP), MPLS-related protocols (such as LDP), and multicast-related protocols.

Description

A rogue router could send a fictitious routing update to convince a site's perimeter router to send traffic to an incorrect or even a rogue destination. This diverted traffic could be analyzed to learn confidential information about the site's network or used to disrupt the network's ability to communicate with other networks. This is known as a "traffic attraction attack" and is prevented by configuring neighbor router authentication for routing updates. However, using clear-text authentication provides little benefit since an attacker can intercept traffic and view the authentication key. This would allow the attacker to use the authentication key in an attack. Since MD5 is vulnerable to "birthday" attacks and may be compromised, routing protocol authentication must use FIPS 198-1 validated algorithms and modules to encrypt the authentication key. This requirement applies to all IPv4 and IPv6 protocols that are used to exchange routing or packet forwarding information; this includes all Interior Gateway Protocols (such as OSPF, EIGRP, and IS-IS) and Exterior Gateway Protocols (such as BGP), MPLS-related protocols (such as LDP), and multicast-related protocols.

ℹ️ Check
Review the router configuration to verify it is using a NIST-validated FIPS 198-1 message authentication code algorithm to authenticate routing protocol messages. ! interface vlan400 ipv6 ospf 10 area 0.0.0.1 ipv6 ospf authentication ipsec spi 4017 sha1 1234567890123456789012345678901234567890 If a NIST-validated FIPS 198-1 message authentication code algorithm is not being used to authenticate routing protocol messages, this is a finding.

ℹ️ Check

Review the router configuration to verify it is using a NIST-validated FIPS 198-1 message authentication code algorithm to authenticate routing protocol messages. ! interface vlan400 ipv6 ospf 10 area 0.0.0.1 ipv6 ospf authentication ipsec spi 4017 sha1 1234567890123456789012345678901234567890 If a NIST-validated FIPS 198-1 message authentication code algorithm is not being used to authenticate routing protocol messages, this is a finding.

✔️ Fix
Configure routing protocol authentication to use a NIST-validated FIPS 198-1 message authentication code algorithm. OS10(config)# interface vlan 400 OS10(conf-if-vl-400)# ipv6 ospf 10 area 0.0.0.1 OS10(conf-if-vl-400)# ipv6 ospf authentication ipsec spi 4017 sha1 1234567890123456789012345678901234567890 OS10(conf-if-vl-400)# exit