English
¢¸¢· µÚ·Î
Ãë¾àÁ¡ID 29129
À§Çèµµ 40
Æ÷Æ® 161
ÇÁ·ÎÅäÄÝ UDP
ºÐ·ù CISCO
»ó¼¼¼³¸í CISCO IOSÀÇ ¹öÀü Á¤º¸¿¡ µû¸£¸é ÇØ´ç ¼ÒÇÁÆ®¿þ¾î¿¡´Â SGBP ÆÐŶ 󸮰úÁ¤¿¡ ÀÖ´Â ¼­ºñ½º °ÅºÎ Ãë¾àÁ¡(CISCO ¹ö±× ID CSCsb11124)ÀÌ Á¸ÀçÇÑ´Ù. SGBP(Stack Group Bidding Protocol)´Â MMP(Multichassis Multilink PPP) ½Ã½ºÅÛ¿¡ »ç¿ëµÈ´Ù. Cisco IOS 12.0¿¡¼­ 12.4 ±îÁöÀÇ ¹öÀüµéÀº SGBP¿¡¼­ÀÇ ¿À·ù·Î ÀÎÇÏ¿© ¼­ºñ½º °ÅºÎ °ø°Ý Ãë¾àÁ¡¿¡ Ãë¾àÇÏ´Ù. Àß Á¶ÀÛµÈ UDP ÆÐŶÀ» ¿µÇâÀ» ¹Þ´Â ÀåºñÀÇ 9900 Æ÷Æ®·Î º¸³¿À¸·Î½á, ¿ø°ÝÁöÀÇ °ø°ÝÀÚ´Â ¿ÍÄ¡µ¶(watchdog) ŸÀ̸Ӱ¡ ÀÌ »óŸ¦ ŽÁöÇÏ°í ÀåÄ¡¸¦ Àç½ÃÀÛ ÇÒ ¶§±îÁö ÀÀ´äÇÒ ¼ö ¾ø°Ô ÇÒ 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 SGBP°¡ »ç¿ë ÁßÁöµÇ¾î ÀÖ´Ù¸é ÀÌ Ãë¾àÁ¡Àº ¹«½ÃÇÑ´Ù.

* Âü°í »çÀÌÆ®:
http://www.cisco.com/warp/public/707/cisco-sa-20060118-sgbp.shtml
http://securitytracker.com/alerts/2006/Jan/1015501.html
http://www.osvdb.org/22624
http://secunia.com/advisories/18490

* ¿µÇâÀ» ¹Þ´Â Ç÷§Æû:
Cisco IOS 12.0¿¡¼­ 12.4±îÁöÀÇ ¹öÀüµé
ÇØ°áÃ¥ ´ÙÀ½ Cisco º¸¾È ±Ç°í¾È(IOS Stack Group Bidding Protocol Crafted Packet DoS)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-20060118-sgbp.shtml

¾÷±×·¹À̵åµéÀº Cisco À¥ »çÀÌÆ®ÀÎ http://www.cisco.com ¿¡ ÀÖ´Â Software Center¸¦ ÅëÇØ ±¸ÇÒ ¼ö ÀÖ´Ù.
°ü·Ã URL CVE-2006-0340 (CVE)
°ü·Ã URL 16303 (SecurityFocus)
°ü·Ã URL 24182 (ISS)