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2021Äê10ÔÂ12ÈÕ£¬£¬£¬£¬£¬£¬Î¢ÈíÐÞ¸´ÁË .NET Core ºÍ Visual Studio ÖеÄÒ»¸öÐÅϢй¶Îó²î£¨CVE-2021-41355£©£¬£¬£¬£¬£¬£¬¸ÃÎó²î¿ÉÄܻᵼÖÂÆ¾Ö¤ÒÔÃ÷ÎÄÐÎʽй¶£¬£¬£¬£¬£¬£¬ÆäCVSSÆÀ·ÖΪ5.7£¬£¬£¬£¬£¬£¬Ó°ÏìÁË.NET 5.0¡¢Microsoft Visual Studio 2019 ºÍPowerShell 7.1¡£¡£¡£¡£

¿ËÈÕ£¬£¬£¬£¬£¬£¬Î¢ÈíÐû²¼Windows Defender Ó¦ÓóÌÐò¿ØÖÆÇå¾²¹¦Ð§ÈƹýÎó²î£¨CVE-2020-0951£¬£¬£¬£¬£¬£¬ÓÚ2020Äê9ÔÂ8ÈÕÊ×´ÎÐû²¼£©Ç徲ͨ¸æ£¬£¬£¬£¬£¬£¬¸ÃÎó²î¿ÉÄÜʹ¹¥»÷ÕßÈÆ¹ý WDAC ¡£¡£¡£¡£ÀÖ³ÉʹÓôËÎó²îµÄ¹¥»÷Õß¿ÉÒÔÖ´Ðб» WDAC ×èÖ¹µÄ PowerShell ÏÂÁî¡£¡£¡£¡£µ«ÒªÊ¹ÓøÃÎó²î£¬£¬£¬£¬£¬£¬¹¥»÷ÕßÐèÒªÔÚÔËÐÐPowerShellµÄÍâµØ»úеÉÏÓÐÖÎÀíԱȨÏÞ¡£¡£¡£¡£È»ºó£¬£¬£¬£¬£¬£¬¹¥»÷Õß¿ÉÒÔÅþÁ¬µ½PowerShell»á»°£¬£¬£¬£¬£¬£¬²¢·¢ËÍÏÂÁîÀ´Ö´ÐÐí§Òâ´úÂë¡£¡£¡£¡£¸ÃÎó²îÓ°ÏìÁËPowerShell 7.0ºÍ7.1°æ±¾¡£¡£¡£¡£

PowerShell ÊÇÒ»¸ö¿çƽ̨µÄʹÃü×Ô¶¯»¯½â¾ö¼Æ»®£¬£¬£¬£¬£¬£¬ÓÉÏÂÁîÐÐ shell¡¢¾ç±¾ÓïÑÔºÍÉèÖÃÖÎÀí¿ò¼Ü×é³É¡£¡£¡£¡£PowerShell ¿ÉÒÔÔÚ Windows¡¢Linux ºÍ macOS ÉÏÔËÐС£¡£¡£¡£Windows Defender Ó¦ÓóÌÐò¿ØÖÆ£¨WDAC£©Ö¼ÔÚ±£»£»£»£»£»£»£»¤Windows×°±¸ÃâÊÜDZÔڵĶñÒâÈí¼þÈëÇÖ£¬£¬£¬£¬£¬£¬È·±£Ö»ÓÐÊÜÐÅÈεÄÓ¦ÓóÌÐòºÍÇý¶¯³ÌÐò¿ÉÒÔÔËÐУ¬£¬£¬£¬£¬£¬´Ó¶ø×èÖ¹¶ñÒâÈí¼þºÍ²»ÐèÒªµÄÈí¼þÆô¶¯¡£¡£¡£¡£

ÏÖÔÚ£¬£¬£¬£¬£¬£¬Redmond ÒѾ­Ðû²¼ÁË PowerShell 7.0.8 ºÍ PowerShell 7.1.5£¬£¬£¬£¬£¬£¬ÒÔÐÞ¸´ PowerShell 7 ºÍ PowerShell 7.1 ·ÖÖ§ÖеÄÇå¾²Îó²îCVE-2020-0951ºÍCVE-2021-41355¡£¡£¡£¡£ÓÉÓÚ¹¥»÷Õß¿ÉÒÔʹÓÃÕâЩÎó²îÈÆ¹ýWDACÇ¿ÖÆÖ´Ðв¢»ñµÃ¶Ô´¿Îı¾Æ¾Ö¤µÄ»á¼ûȨÏÞ£¬£¬£¬£¬£¬£¬Î¢ÈíÒªÇóϵͳÖÎÀíԱΪPowerShell 7¸üв¹¶¡¡£¡£¡£¡£

 

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Õâ2¸öÎó²îÓ°ÏìÁËPowerShell 7µÄÒÔϰ汾£º

CVE-2021-41355£ºPowerShell 7.1

CVE-2020-0951£ºPowerShell 7.0 ¡¢PowerShell7.1

 

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ÏÖÔÚÕâЩÎó²îÒѾ­ÐÞ¸´¡£¡£¡£¡£Õë¶ÔPowerShell £¬£¬£¬£¬£¬£¬½¨ÒéÊÜÓ°ÏìµÄÓû§ÊµÊ±Éý¼¶¸üе½PowerShell 7.0.8 »ò PowerShell 7.1.5¡£¡£¡£¡£Òª¼ì²âPowerShell 7 °æ±¾ÊÇ·ñÊܵ½Ó°Ï죬£¬£¬£¬£¬£¬ÇëÔÚPowershell´°¿ÚÖÐÊäÈëÏÂÁ$PSVersionTable¡£¡£¡£¡£

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https://github.com/PowerShell/PowerShell#get-powershell

 

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https://github.com/PowerShell/Announcements/issues/27

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-41355

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-0951

https://www.bleepingcomputer.com/news/microsoft/microsoft-asks-admins-to-patch-powershell-to-fix-wdac-bypass/

 

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