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Îó²îÃû³Æ | Cisco ASA & FTD¾Ü¾ø·þÎñÎó²î | ||
CVE ID | CVE-2024-20353 | ||
Îó²îÀàÐÍ | Dos | ·¢Ã÷ʱ¼ä | 2024-04-25 |
Îó²îÆÀ·Ö | 8.6 | Îó²îÆ·¼¶ | ¸ßΣ |
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Cisco ASA ºÍFTDÖÐµÄ Cisco ASA»Ö¸´¹¦Ð§±£´æÎó²î£¬ÓÉÓÚ±¸·ÝÎļþµÄÄÚÈÝÔÚ»Ö¸´Ê±Î´×¼È·ÕûÀí£¬¾ÓÉÉí·ÝÑéÖ¤ÇÒ¾ßÓÐÖÎÀíԱȨÏÞµÄÍâµØÍþвÕß¿ÉÒÔͨ¹ý½«¶ñÒâÉè¼ÆµÄ±¸·ÝÎļþ»Ö¸´µ½ÊÜÓ°ÏìµÄ×°±¸À´Ê¹ÓøÃÎó²î£¬ÀÖ³ÉʹÓÿÉÄܵ¼ÖÂÒÔrootȨÏÞÔڵײãϵͳÉÏÖ´ÐÐí§ÒâÏÂÁî¡£
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Ϊ×ÊÖú¿Í»§È·¶¨Æä Cisco ASA¡¢FMC ºÍ FTD Èí¼þÖÐÊÇ·ñ±£´æÎó²î£¬Ë¼¿ÆÌṩÁË˼¿ÆÈí¼þ¼ì²éÆ÷¹¤¾ß£¬Óû§¿ÉʹÓøù¤¾ßÅжÏÄ¿½ñ×°±¸µÄÈí¼þ°æ±¾ÊÇ·ñÊÜÕâЩÎó²îÓ°Ï죬²¢¸üе½²»ÊÜÓ°Ïì°æ±¾¡£ÒªÊ¹Óøù¤¾ß£¬ÇëתÖÁCisco Software CheckerÒ³Ã沢ƾÌý˵Ã÷¾ÙÐвÙ×÷£ºhttps://sec.cloudapps.cisco.com/security/center/softwarechecker.x
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3.1 Éý¼¶°æ±¾
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https://sec.cloudapps.cisco.com/security/center/resources/asa_ftd_attacks_event_response?
3.2 ÔÝʱ²½·¥
Õë¶ÔCVE-2024-20353£¬¿É²Î¿¼ÒÔϲ½·¥¾ÙÐÐÊÖ¶¯ÅŲ飺
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Ҫȷ¶¨ÔËÐÐCisco ASAÈí¼þ»òFTDÈí¼þµÄ×°±¸ÊÇ·ñÊܵ½Ó°Ï죬ÇëʹÓÃshow asp table socket | include SSLÏÂÁîÔÚÈκÎTCP ¶Ë¿ÚÉϲéÕÒ SSL ÕìÌýÌ×½Ó×Ö¡£ÈôÊÇÊä³öÖзºÆðsocket£¬ÔòÓ¦ÒÔΪ¸Ã×°±¸±£´æÎó²î¡£Cisco ASA ×°±¸Ê¾ÀýÈçÏ£º
ciscoasa# show asp table socket | include SSL
SSL 00185038 LISTEN 172.16.0.250:443 0.0.0.0:*
SSL 00188638 LISTEN 10.0.0.250:8443 0.0.0.0:*
ÈôÊÇ Cisco ASA Èí¼þºÍ FTD Èí¼þ¾ßÓÐÒÔÏÂÁ½¸ö±íÖÐÁгöµÄÒ»Ïî»ò¶àÏîÒ×Êܹ¥»÷µÄÉèÖã¬Ôò´ËÎó²î»áÓ°ÏìËüÃÇ¡£ÕâЩ¹¦Ð§¿ÉÄܻᵼÖÂÆôÓÃSSLÕìÌýÌ×½Ó×Ö¡£
ASA Èí¼þÒ×Êܹ¥»÷µÄÉèÖÃ
Ò×Êܹ¥»÷µÄ˼¿ÆASAÈí¼þ¹¦Ð§ | ¿ÉÄܱ£´æÎó²îµÄÉèÖã¨show running-config CLIÏÂÁîÖеÄÉèÖã© |
AnyConnect IKEv2 Ô¶³Ì»á¼û£¨Ê¹Óÿͻ§¶Ë·þÎñ£© | crypto ikev2 enable [...] client-services port |
ÍâµØÖ¤Êé½ÒÏþ»ú¹¹ (CA) | crypto ca server no shutdown |
ÖÎÀí Web ·þÎñÆ÷»á¼û£¨°üÀ¨ ASDM ºÍ CSM£© | http server enable http |
Mobile User Security (MUS) | webvpn mus password mus server enable port mus |
REST API | rest-api image disk0:/rest-api agent |
SSL VPN | webvpn enable |
FTD Èí¼þÒ×Êܹ¥»÷µÄÉèÖÃ
Ò×Êܹ¥»÷µÄ˼¿ÆFTDÈí¼þ¹¦Ð§ | ¿ÉÄܱ£´æÎó²îµÄÉèÖã¨show running-config CLIÏÂÁîÖеÄÉèÖã© |
AnyConnect IKEv2 Ô¶³Ì»á¼û£¨Ê¹Óÿͻ§¶Ë·þÎñ£© | crypto ikev2 enable [...] client-services port |
AnyConnect SSL VPN | webvpn enable |
HTTP server enabled | http server enable http |
3.3 ͨÓý¨Òé
l °´ÆÚ¸üÐÂϵͳ²¹¶¡£¬ïÔÌϵͳÎó²î£¬ÌáÉý·þÎñÆ÷µÄÇå¾²ÐÔ¡£
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l ÆôÓÃÇ¿ÃÜÂëÕ½ÂÔ²¢ÉèÖÃΪ°´ÆÚÐ޸ġ£
3.4 ²Î¿¼Á´½Ó
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-websrvs-dos-X8gNucD2
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-persist-rce-FLsNXF4h#fs
https://blog.talosintelligence.com/arcanedoor-new-espionage-focused-campaign-found-targeting-perimeter-network-devices/
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V1.0 | 2024-04-25 | Ê×´ÎÐû²¼ |
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