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CVE-2024-20353

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Cisco Adaptive Security Appliance£¨ASA£©ÊÇCisco Systems ÌṩµÄһϵÁм¯³ÉÇå¾²½â¾ö¼Æ»® £¬²úÆ·Ïß°üÀ¨Â·ÓÉÆ÷¡¢·þÎñÆ÷¡¢·À»ðǽ¡¢VPN Íø¹ØºÍ IDS/IPS ×°±¸¡£Cisco Firepower Threat Defense£¨FTD£©ÊÇÒ»¸öͳһµÄÇå¾²½â¾ö¼Æ»® £¬ÌṩÕë¶ÔÖØ´óÍþвµÄÖÜÈ«±£»¤¡£

2024Äê4ÔÂ25ÈÕ £¬ÓÅ·¢¹ú¼ÊÍøÕ¾¹ÙÍøVSRC¼à²âµ½CiscoÐû²¼Õë¶ÔÆä·À»ðǽƽ̨µÄ¹¥»÷ÊÂÎñÏìӦͨ¸æ £¬ÍþвÕßͨ¹ýʹÓÃCisco ASA ºÍ FTDÈí¼þÖеĶà¸öÎó²î¾ÙÐй¥»÷ £¬ÒÔÖ²Èë¶ñÒâÈí¼þ¡¢Ö´ÐÐÏÂÁî¡¢²¢¿ÉÄÜ´ÓÊÜѬȾµÄ×°±¸ÖÐÇÔÈ¡Êý¾Ý¡£

CVE-2024-20353£ºCisco ASA & FTD¾Ü¾ø·þÎñÎó²î£¨¸ßΣ£©

Cisco ASA ºÍ FTDÈí¼þµÄÖÎÀíºÍVPN Web·þÎñÆ÷Öб£´æ¾Ü¾ø·þÎñÎó²î £¬ÓÉÓÚÆÊÎöHTTP±êͷʱ¹ýʧ¼ì²é²»ÍêÕû £¬Î´¾­Éí·ÝÑéÖ¤µÄÔ¶³ÌÍþвÕß¿ÉÒÔͨ¹ýÏòÄ¿µÄweb·þÎñÆ÷·¢ËͶñÒâµÄHTTPÇëÇóÀ´Ê¹ÓøÃÎó²î £¬ÀÖ³ÉʹÓÿÉÄܵ¼ÖÂ×°±¸ÖØмÓÔØ £¬´Ó¶øµ¼Ö¾ܾø·þÎñ¡£¸ÃÎó²îµÄCVSSÆÀ·ÖΪ8.6 £¬ÏÖÔÚÒÑ·¢Ã÷±»Ê¹Óá£

CVE-2024-20359£ºCisco ASA & FTD´úÂëÖ´ÐÐÎó²î£¨¸ßΣ£©

Cisco ASA ºÍ FTDµÄijЩ¹¦Ð§Öб£´æÎó²î £¬ÓÉÓÚ´ÓϵͳÉÁ´æ¶ÁÈ¡Îļþʱ¶ÔÎļþÑéÖ¤²»µ± £¬¾­ÓÉÉí·ÝÑéÖ¤ÇÒ¾ßÓÐÖÎÀíԱȨÏÞµÄÍâµØÍþвÕß¿ÉÒÔͨ¹ý½«¶ñÒâÉè¼ÆµÄÎļþ¸´ÖƵ½ÊÜÓ°Ïì×°±¸µÄdisk0:ÎļþϵͳÀ´Ê¹ÓøÃÎó²î £¬ÀÖ³ÉʹÓÿÉÄܵ¼ÖÂÍþвÕßÔÚÏ´ÎÖØмÓÔØ×°±¸ºóÔÚÊÜÓ°ÏìµÄ×°±¸ÉÏÖ´ÐÐí§Òâ´úÂë £¬ÇÒ×¢ÈëµÄ´úÂë¿ÉÄÜ»áÔÚ×°±¸ÖØÐÂÆô¶¯ºóÒ»Á¬±£´æ £¬´Ó¶øµ¼Ö³¤ÆÚÍâµØ´úÂëÖ´ÐС£¸ÃÎó²îµÄCVSSÆÀ·ÖΪ6.0 £¬ÏÖÔÚÒÑ·¢Ã÷±»Ê¹Óá£

CVE-2024-20358£ºCisco ASA & FTDÏÂÁî×¢ÈëÎó²î£¨ÖÐΣ£©

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°Ïì £¬²¢¸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

ÏÖÔÚÕâЩÎó²îÒѾ­ÐÞ¸´ £¬ÊÜÓ°ÏìÓû§¿ÉʹÓùٷ½ÌṩµÄ¹¤¾ß»ò²½·¥¾ÙÐÐÅÅ²é £¬²¢Éý¼¶µ½²»ÊÜÓ°Ïì»ò×îеĹ̼þ°æ±¾ £¬»ò¹Ø±Õ×°±¸Ò×Êܹ¥»÷µÄÉèÖú͹¦Ð§ÒÔ»º½â¸ÃÎó²î¡£

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https://sec.cloudapps.cisco.com/security/center/resources/asa_ftd_attacks_event_response?

3.2 ÔÝʱ²½·¥

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Ҫȷ¶¨ÔËÐÐCisco ASAÈí¼þ»òFTDÈí¼þµÄ×°±¸ÊÇ·ñÊܵ½Ó°Ïì £¬ÇëʹÓÃshow 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¥»÷µÄÉèÖà £¬Ôò´ËÎó²î»áÓ°ÏìËüÃÇ¡£ÕâЩ¹¦Ð§¿ÉÄܻᵼÖÂÆôÓÃSSLÕìÌýÌ×½Ó×Ö¡£

ASA Èí¼þÒ×Êܹ¥»÷µÄÉèÖÃ

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AnyConnect   IKEv2 Ô¶³Ì»á¼û£¨Ê¹Óÿͻ§¶Ë·þÎñ£©

crypto   ikev2 enable [...] client-services port

ÍâµØÖ¤Êé½ÒÏþ»ú¹¹ (CA)

crypto   ca server

no   shutdown

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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

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crypto   ikev2 enable [...] client-services port

AnyConnect   SSL VPN

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HTTP   server enabled

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3.3 ͨÓý¨Òé

l  °´ÆÚ¸üÐÂϵͳ²¹¶¡ £¬ïÔ̭ϵͳÎó²î £¬ÌáÉý·þÎñÆ÷µÄÇå¾²ÐÔ¡£

l  ÔöǿϵͳºÍÍøÂçµÄ»á¼û¿ØÖÆ £¬Ð޸ķÀ»ðǽսÂÔ £¬¹Ø±Õ·ÇÐëÒªµÄÓ¦Óö˿ڻò·þÎñ £¬ïÔÌ­½«Î£ÏÕ·þÎñ£¨ÈçSSH¡¢RDPµÈ£©Ì»Â¶µ½¹«Íø £¬ïÔÌ­¹¥»÷Ãæ¡£

l  ʹÓÃÆóÒµ¼¶Çå¾²²úÆ· £¬ÌáÉýÆóÒµµÄÍøÂçÇå¾²ÐÔÄÜ¡£

l  ÔöǿϵͳÓû§ºÍȨÏÞÖÎÀí £¬ÆôÓöàÒòËØÈÏÖ¤»úÖƺÍ×îСȨÏÞÔ­Ôò £¬Óû§ºÍÈí¼þȨÏÞÓ¦¼á³ÖÔÚ×îµÍÏ޶ȡ£

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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