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Ãë¾àÁ¡ID 26854
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ÇÁ·ÎÅäÄÝ TCP
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»ó¼¼¼³¸í ÇØ´ç ½Ã½ºÅÛ¿¡´Â 2021³â 5¿ù Microsoft º¸¾È ¾÷µ¥ÀÌÆ®°¡ ¼³Ä¡µÇ¾î ÀÖÁö ¾Ê½À´Ï´Ù. µû¶ó¼­ ´ÙÁß Ãë¾àÁ¡ÀÇ ¿µÇâÀ» ¹Þ½À´Ï´Ù.

-Wi-Fi º¸È£ ¾×¼¼½º (WPA, WPA2 ¹× WPA3) ¹× WEP (Wired Equivalent Privacy)¸¦ µÞ¹ÞħÇÏ´Â 802.11 Ç¥ÁØÀº ÇÁ·¹ÀÓÀÇ ¸ðµç Á¶°¢ÀÌ µ¿ÀÏÇÑ Å°·Î ¾Ïȣȭ µÉ ÇÊ¿ä°¡ ¾ø½À´Ï´Ù. °ø°ÝÀÚ´Â ´Ù¸¥ ÀåÄ¡°¡ Á¶°¢³­ ÇÁ·¹ÀÓÀ» Àü¼ÛÇÏ°í WEP, CCMP ¶Ç´Â GCMP ¾Ïȣȭ Å°°¡ ÁÖ±âÀûÀ¸·Î °»½Å µÉ ¶§ ¼±ÅÃÇÑ Á¶°¢À» Çص¶Çϱâ À§ÇØ À̸¦ ¾Ç¿ë ÇÒ ¼ö ÀÖ½À´Ï´Ù. (CVE-2020-24587)

-Wi-Fi Protected Access (WPA, WPA2 ¹× WPA3) ¹× WEP (Wired Equivalent Privacy)¸¦ µÞ¹ÞħÇÏ´Â 802.11 Ç¥ÁØ¿¡¼­´Â ÀÏ¹Ý ÅؽºÆ® QoS Çì´õ ÇʵåÀÇ A-MSDU Ç÷¡±×°¡ ÀÎÁõ µÉ ÇÊ¿ä°¡ ¾ø½À´Ï´Ù. ºñ SSP A-MSDU ÇÁ·¹ÀÓ (802.11nÀÇ ÀϺηΠÇʼö) ¼ö½ÅÀ» Áö¿øÇÏ´Â ÀåÄ¡¿¡ ´ëÇØ °ø°ÝÀÚ´ÂÀ̸¦ ¾Ç¿ëÇÏ¿© ÀÓÀÇÀÇ ³×Æ®¿öÅ© ÆÐŶÀ» »ðÀÔ ÇÒ ¼ö ÀÖ½À´Ï´Ù. (CVE-2020-24588)

-½ºÅ©¸³Æà ¿£Áø ¸Þ¸ð¸® ¼Õ»ó Ãë¾àÁ¡ (CVE-2021-26419)

-Microsoft Jet Red µ¥ÀÌÅͺ£À̽º ¿£Áø ¹× ¾×¼¼½º ¿¬°á ¿£Áø ¿ø°Ý ÄÚµå ½ÇÇà Ãë¾à¼º (CVE-2021-28455)

* ¾Ë¸²: ÀÌ Á¡°ËÇ׸ñÀº Á¡°ËÇϱâ À§ÇÑ ¿ø°ÝÁö È£½ºÆ®¿¡ ·Î±×ÀÎÇÒ 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®:
https://support.microsoft.com/en-us/help/4009469
https://support.microsoft.com/en-us/help/4009470
https://support.microsoft.com/en-us/help/4009471
https://support.microsoft.com/en-us/help/4000825

* ¿µÇâÀ» ¹Þ´Â Ç÷§Æû:
Windows Server 2008 R2 SP1
Windows Server 2008 R2 x64 SP1
Windows 8.1
Windows Server 2012
Windows Server 2012 R2
Windows 10
Windows Server 2016
ÇØ°áÃ¥ ´ÙÀ½ ¸¶ÀÌÅ©·Î¼ÒÇÁÆ® º¸¾È °Ô½Ã¹° 2021³â 5¿ù Microsoft º¸¾È ¾÷µ¥ÀÌÆ®¸¦ ÂüÁ¶ÇÏ¿© ½Ã½ºÅÛ¿¡ ´ëÇÑ ÀûÀýÇÑ ÆÐÄ¡¸¦ Àû¿ëÇÑ´Ù.

https://support.microsoft.com/en-us/help/4009469
https://support.microsoft.com/en-us/help/4009470
https://support.microsoft.com/en-us/help/4009471
https://support.microsoft.com/en-us/help/4000825
-- ¶Ç´Â --
Windows Ç÷§ÆûµéÀ» À§ÇÑ ÆÐÄ¡µéÀº ¶ÇÇÑ Microsoft Windows Update À¥ »çÀÌÆ®ÀÎ http://windowsupdate.microsoft.com ¿¡¼­µµ ±¸ÇÒ ¼ö ÀÖ´Ù. Windows Update´Â »ç¿ë ÁßÀÎ WindowsÀÇ ¹öÀüÀ» ÀÚµ¿À¸·Î ã¾Æ³»°í ÀûÀýÇÑ ÆÐÄ¡¸¦ Á¦°øÇØ ÁØ´Ù.
°ü·Ã URL CVE-2020-24587,CVE-2020-24588,CVE-2020-26144,CVE-2021-26419,CVE-2021-28455,CVE-2021-28476,CVE-2021-28479,CVE-2021-31170,CVE-2021-31182 (CVE)
°ü·Ã URL (SecurityFocus)
°ü·Ã URL (ISS)