Ensure 'OSPF authentication' is enabled

높음레벨 2자동cisco-asa

설명

Enables the authentication of OSPF neighbor before routing information is received from the neighbor. Enabling the routing protocol authentication prevents against attackers who can send wrong routing information in order to redirect traffic to their network or send malformed packets in order to saturate and to exhaust the control plane. Not applicable (passes) when no 'router ospf' is configured; otherwise fails if no interface has OSPF MD5 authentication. Audited against the output of 'show running-config' (run 'terminal pager 0' first; 'more system:running-config' also works and shows unmasked secrets).

점검 방법

감사 방식: 구성 패턴

패턴: (?m)\A(?:[ \t]*(?:$|[^o \t\n]|o(?:$|[^s\n]|s(?:$|[^p\n]|p(?:$|[^f\n]|f(?:$|[^ \n]| (?:$|[^am\n]|a(?:$|[^u\n]|u(?:$|[^t\n]|t(?:$|[^h\n]|h(?:$|[^e\n]|e(?:$|[^n\n]|n(?:$|[^t\n]|t(?:$|[^i\n]|i(?:$|[^c\n]|c(?:$|[^a\n]|a(?:$|[^t\n]|t(?:$|[^i\n]|i(?:$|[^o\n]|o(?:$|[^n\n]|n(?:$|[^ \n]| (?:$|[^m\n]|m(?:$|[^e\n]|e(?:$|[^s\n]|s(?:$|[^s\n]|s(?:$|[^a\n]|a(?:$|[^g\n]|g(?:$|[^e\n]|e(?:$|[^\-\n]|-(?:$|[^d\n]|d(?:$|[^i\n]|i(?:$|[^g\n]|g(?:$|[^e\n]|e(?:$|[^s\n]|s(?:$|[^t\n]))))))))))))))))))))))))))))|m(?:$|[^e\n]|e(?:$|[^s\n]|s(?:$|[^s\n]|s(?:$|[^a\n]|a(?:$|[^g\n]|g(?:$|[^e\n]|e(?:$|[^\-\n]|-(?:$|[^d\n]|d(?:$|[^i\n]|i(?:$|[^g\n]|g(?:$|[^e\n]|e(?:$|[^s\n]|s(?:$|[^t\n]|t(?:$|[^\-\n]|-(?:$|[^k\n]|k(?:$|[^e\n]|e(?:$|[^y\n]|y(?:$|[^ \n]))))))))))))))))))))))))[^\n]*\n)*[ \t]*router ospf [^\n]*(?:\n(?:[ \t]*(?:$|[^o \t\n]|o(?:$|[^s\n]|s(?:$|[^p\n]|p(?:$|[^f\n]|f(?:$|[^ \n]| (?:$|[^am\n]|a(?:$|[^u\n]|u(?:$|[^t\n]|t(?:$|[^h\n]|h(?:$|[^e\n]|e(?:$|[^n\n]|n(?:$|[^t\n]|t(?:$|[^i\n]|i(?:$|[^c\n]|c(?:$|[^a\n]|a(?:$|[^t\n]|t(?:$|[^i\n]|i(?:$|[^o\n]|o(?:$|[^n\n]|n(?:$|[^ \n]| (?:$|[^m\n]|m(?:$|[^e\n]|e(?:$|[^s\n]|s(?:$|[^s\n]|s(?:$|[^a\n]|a(?:$|[^g\n]|g(?:$|[^e\n]|e(?:$|[^\-\n]|-(?:$|[^d\n]|d(?:$|[^i\n]|i(?:$|[^g\n]|g(?:$|[^e\n]|e(?:$|[^s\n]|s(?:$|[^t\n]))))))))))))))))))))))))))))|m(?:$|[^e\n]|e(?:$|[^s\n]|s(?:$|[^s\n]|s(?:$|[^a\n]|a(?:$|[^g\n]|g(?:$|[^e\n]|e(?:$|[^\-\n]|-(?:$|[^d\n]|d(?:$|[^i\n]|i(?:$|[^g\n]|g(?:$|[^e\n]|e(?:$|[^s\n]|s(?:$|[^t\n]|t(?:$|[^\-\n]|-(?:$|[^k\n]|k(?:$|[^e\n]|e(?:$|[^y\n]|y(?:$|[^ \n]))))))))))))))))))))))))[^\n]*))*\n?\z

조치 방법

조치 방식: 가이드 또는 인프라 패치

! - Step 1: Acquire the interface <interface_name> used by the firewall to receive OSPF routing updates and the area ID <area_id> - Step 2: Agree with the neighbor device on the authencation key <key_value> and determine an authentication key ID <key_id> - Step 3: Run the following to enable OSPF authentication interface <interface_name> ospf authentication message-digest ospf message-digest-key <key_id> md5 <key_value> exit area <area_id> authentication message-digest

속성

운영 체제: 모두
태그: cisco-asanetworkaaa
참고 자료: CIS Cisco ASA 9.x Firewall Benchmark v1.1.0 - 2.1.1 Ensure 'OSPF authentication' is enabled

이 호스트 점검하기

감사 권한이 있는 시스템에서 실행하세요. 스캔은 읽기 전용입니다.

shell

tmaegis scan --target cisco-asa --level 2