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»ó¼¼¼³¸í CISCO IOSÀÇ ¹öÀü Á¤º¸¿¡ µû¸£¸é ÇØ´ç ¼ÒÇÁÆ®¿þ¾î¿¡´Â IKE ÆÐŶ 󸮰úÁ¤¿¡ ÀÖ´Â ¼­ºñ½º °ÅºÎ Ãë¾àÁ¡(CISCO ¹ö±× ID CSCed94829)ÀÌ Á¸ÀçÇÑ´Ù. IPSecÀº °¡»ó »ç¼³¸Á¿¡¼­ ÈçÈ÷ »ç¿ëµÇ´Â ÇÁ·ÎÅäÄÝÀÌ´Ù. Internet Key Exchange (IKE) ÇÁ·ÎÅäÄÝÀº »óÈ£°£ÀÇ ÀÎÁõ Á¦°ø°ú IPSec Security Association (SA)µéÀ» À§ÇÑ Å° ±³È¯À» À§ÇÏ¿© »ç¿ëµÈ´Ù. Cisco IOS 12.2SX, 12.3T, 12.4, 12.4T ¹öÀüµéÀ» Æ÷ÇÔÇÑ ´Ù¸¥ ¿©·¯ Cicco ÀåÄ¡µéÀº IKE ¹öÀü 1 ±¸Çö¿¡ ÀÖ´Â ¿À·ù·Î ÀÎÇÏ¿© ¼­ºñ½º °ÅºÎ °ø°Ý Ãë¾àÁ¡¿¡ Ãë¾àÇÏ´Ù. Àß Á¶ÀÛµÈ IKE ¸Þ½ÃÁö¸¦ ¿µÇâÀ» ¹Þ´Â Àåºñ·Î º¸³¿À¸·Î½á, ¿ø°ÝÁöÀÇ °ø°ÝÀÚ´Â ÀåÄ¡¸¦ Àç½ÃÀÛ ½Ãų ¼ö ÀÖ´Ù.

* ¾Ë¸²: ÀÌ Á¡°ËÇ׸ñÀº ÀÌ Ãë¾àÁ¡À» Á¡°ËÇϱâ À§ÇØ ÇØ´ç ½Ã½ºÅÛÀÇ ¹öÀüÁ¤º¸¸¸À» È®ÀÎÇÑ´Ù. µû¶ó¼­ °ÅÁþ ¾ç¼º¹ÝÀÀ(False Positive)À» º¸ÀÏ ¼ö ÀÖ´Ù. ÀÌ Á¡°ËÇ׸ñÀº ¶ÇÇÑ ¹öÀüÁ¤º¸¸¦ ¼öÁýÇϱâ À§ÇÏ¿© Àб⠱ÇÇÑÀÇ SNMP Community ¹®ÀÚ¿­À» ÇÊ¿ä·Î ÇÑ´Ù. À̸¦ À§Çؼ­´Â Á¤Ã¥ ÆíÁý±â¿¡¼­ Á¡°ËÇ׸ñ "snmp/guessable/r"¿¡ Ÿ´çÇÑ Community ¹®ÀÚ¿­À» Ãß°¡ÇÏ¿©¾ß ÇÑ´Ù. ±×¸®°í ¶ÇÇÑ, IPv6°¡ »ç¿ë ÁßÁö µÇ¾î ÀÖ´Ù¸é ÀÌ Ãë¾àÁ¡Àº Àû¿ëµÇÁö ¾Ê´Â´Ù. ¸¸¾à IKE°¡ »ç¿ë ÁßÁöµÇ¾î ÀÖ´Ù¸é ÀÌ Ãë¾àÁ¡Àº ¹«½ÃÇÑ´Ù.

* Âü°í »çÀÌÆ®:
http://www.cisco.com/warp/public/707/cisco-sa-20051114-ipsec.shtml
http://www.kb.cert.org/vuls/id/226364
http://securitytracker.com/alerts/2005/Nov/1015198.html
http://securitytracker.com/alerts/2005/Nov/1015199.html
http://securitytracker.com/alerts/2005/Nov/1015200.html
http://securitytracker.com/alerts/2005/Nov/1015201.html
http://securitytracker.com/alerts/2005/Nov/1015202.html
http://www.securiteam.com/securitynews/6M00C1FEKU.html

* ¿µÇâÀ» ¹Þ´Â Ç÷§Æû:
Cisco IOS 12.2SX, 12.3T, 12.4, 12.4T ¹öÀüµéÀ» Æ÷ÇÔÇÑ ´Ù¸¥ ¿©·¯ Cisco Àåºñµé
ÇØ°áÃ¥ ´ÙÀ½ Cisco º¸¾È ±Ç°í¾È(Multiple Vulnerabilities Found by PROTOS IPSec Test Suite)ÀÇ "Software Versions and Fixes" ¸¦ ÂüÁ¶ÇÏ¿© ¹®Á¦°¡ ÇØ°áµÈ ¹öÀüÀ¸·Î ¾÷±×·¹À̵å ÇÏ¿©¾ß ÇÑ´Ù:
http://www.cisco.com/warp/public/707/cisco-sa-20051114-ipsec.shtml

¾÷±×·¹À̵åµéÀº Cisco À¥ »çÀÌÆ®ÀÎ http://www.cisco.com ¿¡ ÀÖ´Â Software Center¸¦ ÅëÇØ ±¸ÇÒ ¼ö ÀÖ´Ù.
°ü·Ã URL CVE-2005-3669 (CVE)
°ü·Ã URL 15401 (SecurityFocus)
°ü·Ã URL 23033 (ISS)