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Ãë¾àÁ¡ID 26147
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Æ÷Æ® 139,445
ÇÁ·ÎÅäÄÝ TCP
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»ó¼¼¼³¸í ÇØ´ç ISA ¼­¹ö´Â Á¤º¸ ³ëÃâ Ãë¾àÁ¡¿¡ Ãë¾àÇÏ´Ù. ISA (Microsoft Internet Security and Acceleration) Server 2000 ¼­¹ö´Â ¿äûÀ» ó¸®ÇÏ´Â Web publishing ·êµéÀÌ 'SSL required'·Î ¼³Á¤µÇ¾î ÀÖÀ» °æ¿ì¿¡¼­ Á¶Â÷µµ Basic ÀÎÁõÀÌ »ç¿ëµÇ´Â À¥ ¼­ºñ½º¸¦ Á¦°øÇÑ´Ù. ÀÌ ¹®Á¦´Â Basic ½Å¿ëÁ¤º¸°¡ Base64·Î ÄÚµåÈ­µÇ¾î Àֱ⠶§¹®¿¡ º¸¾È ¹®Á¦¸¦ ¾ß±âÇÑ´Ù. ¸¸¾à Basic ½Å¿ëÁ¤º¸°¡ HTTP Á¢¼ÓÀ» ÅëÇØ º¸³»Áø´Ù¸é ÀÌ ½Å¿ëÁ¤º¸´Â Æò¹®(Clear Text)·Î Çص¶µÇ¾î ÀÐÇôÁú ¼ö ÀÖ´Ù. ISA ¼­¹ö¿Í Ŭ¶óÀ̾ðÆ® »çÀÌÀÇ ³×Æ®¿öÅ© Åë½ÅÀ» °¡·Îç ¼ö ÀÖ´Â °ø°ÝÀÚ´Â ÀÌ ¹®Á¦¸¦ ÀÌ¿ëÇÏ¿© À¥ »çÀÌÆ®ÀÇ ÀÎÁõ ½Å¿ëÁ¤º¸¸¦ ¾ò¾î³¾ ¼ö ÀÖ´Ù.

* ¾Ë¸²: ÀÌ Á¡°ËÇ׸ñÀº Á¡°ËÇϱâ À§ÇÑ ¿ø°ÝÁö È£½ºÆ®ÀÇ ·¹Áö½ºÆ®¸®¸¦ ¾×¼¼½ºÇÒ ¼ö ÀÖ´Â Guest ȤÀº ±× ÀÌ»óÀÇ ±ÇÇÑÀ» °¡Áø °èÁ¤À» ÇÊ¿ä·Î ÇÑ´Ù. ÀÌ·¯ÇÑ Á¶°ÇÀÌ ¾ÈµÇ¸é Á¡°ËÀ» ¼öÇàÇÒ ¼ö ¾øÀ¸¸ç ¸ðµç Ãë¾àÇÑ È£½ºÆ®µé¿¡ ´ëÇؼ­ °ÅÁþ À½¼º¹ÝÀÀ(False Negative)À» º¸ÀÏ ¼ö ÀÖ´Ù.

* Âü°í »çÀÌÆ®:
http://support.microsoft.com/?id=821724

* ¿µÇâÀ» ¹Þ´Â Ç÷§Æû:
Microsoft ISA Server 2000 SP2
Microsoft ISA Server 2000 SP1
Microsoft ISA Server 2000 FP1
Microsoft ISA Server 2000
Microsoft Windows 2000 Server
ÇØ°áÃ¥ ÀÌ ¹®Á¦¸¦ ÇØ°áÇϱâ À§Çؼ­´Â º¸¾È ¾÷µ¥ÀÌÆ® MS05-034¸¦ Àû¿ëÇÏ¿©¾ß ÇÑ´Ù. ÀÌ º¸¾È ¾÷µ¥ÀÌÆ®¸¦ ´Ù¿î·ÎµåÇϱâ À§Çؼ­´Â ´ÙÀ½ Microsoft À¥ »çÀÌÆ®¸¦ ¹æ¹®ÇÑ´Ù:
http://www.microsoft.com/technet/security/bulletin/ms05-034.mspx

ÀÌ º¸¾È ¾÷µ¥ÀÌÆ®´Â ISA ¼­¹ö°¡ ¾ÈÀüÇÏÁö ¾ÊÀº ÀÎÀÔ(incoming) HTTP À¥ ¿äûµé¿¡ ´ëÇØ Basic ÀÎÁõÀ» ¿äûÇÒ Áö¿¡ ´ëÇØ Á¦¾îÇÒ ¼ö ÀÖµµ·Ï ÇØ ÁØ´Ù. µðÆúÆ®·Î ISA ¼­¹ö´Â ÀÌ ¾÷µ¥ÀÌÆ®¸¦ Àû¿ëÇÒ ¶§ ¾ÈÀüÇÏÁö ¾ÊÀº Á¢¼Óµé¿¡ ´ëÇØ Basic ÀÎÁõÀ» ¿äûÇÏÁö ¾Êµµ·Ï µÇ¾î ÀÖ´Ù. ¸¸¾à ISA ¼­¹ö°¡ ¾ÈÀüÇÏÁö ¾ÊÀº Á¢¼Óµé¿¡ ´ëÇØ Basic ÀÎÁõÀ» ¿äûÇϵµ·Ï ÇÏ°íÀÚ ÇÑ´Ù¸é ´ÙÀ½ ·¹Áö½ºÆ®¸® Å°¸¦ Ãß°¡ÇÑ´Ù:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W3Proxy\Parameters\AllowAskBasicAuthOverNonSecureConnection : DWORD : 1
°ü·Ã URL CVE-2005-1217 (CVE)
°ü·Ã URL 13955 (SecurityFocus)
°ü·Ã URL (ISS)