¡¾·ì϶¹«¸æ¡¿OpenSSH ȨÏÞÌáÉý·ì϶ (CVE-2021-41617)

°ä²¼¹¦·ò 2021-09-27

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CVE     ID

CVE-2021-41617

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2021-09-26

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6.2 - 8.7

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OpenSSH ÊÇ SSH £¨Secure SHell£© ºÍ̸µÄÃâ·Ñ¿ªÔ´ÊµÏÖ¡£¡£¡£¡£¡£¡£

2021Äê9ÔÂ26ÈÕ£¬£¬ £¬£¬£¬£¬OpenSSHÏîÄ¿°ä²¼ÁËOpenSSH 8.8°²È«¸üУ¬£¬ £¬£¬£¬£¬½¨¸´ÁËOpenSSH 6.2 µ½ 8.7°æ±¾ÖÐµÄ sshd(8)ÖеÄÒ»¸öȨÏÞÌáÉý·ì϶£¨CVE-2021-41617£©¡£¡£¡£¡£¡£¡£

µ±sshd(8) ÔÚÖ´ÐÐ AuthorizedKeysCommand »ò AuthorizedPrincipalsCommand ʱ£¬£¬ £¬£¬£¬£¬Î´ÄÜÕýÈ·µØ³õʼ»¯£¬£¬ £¬£¬£¬£¬ÆäÖÐAuthorizedKeysCommandUser »ò AuthorizedPrincipalsCommandUser Ö¸Áî±»ÉèÖÃΪÒÔ·ÇrootÓû§Éí·ÝÔËÐС£¡£¡£¡£¡£¡£Ïà·´£¬£¬ £¬£¬£¬£¬ÕâЩºÅÁ¼Ì³Ð sshd(8) Æô¶¯Ê±µÄ×éµÄȨÏÞ£¬£¬ £¬£¬£¬£¬Æ¾¾ÝϵͳÅäÖÃµÄ·ÖÆç£¬£¬ £¬£¬£¬£¬¼Ì³ÐµÄ×é¿ÉÄÜ»áÈø¨Öú·¨Ê½»ñ×ԵñíµÄȨÏÞ£¬£¬ £¬£¬£¬£¬µ¼ÖÂȨÏÞÌáÉý¡£¡£¡£¡£¡£¡£

ÔÚ sshd_config(5) ÖУ¬£¬ £¬£¬£¬£¬AuthorizedKeysCommand ºÍ AuthorizedPrincipalsCommand ¶¼Ã»Óб»Ä¬ÈÏÆôÓᣡ£¡£¡£¡£¡£

 

Ó°ÏìÁìÓò

OpenSSH °æ±¾6.2 - 8.7

 

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Ŀǰ´Ë·ì϶ÒѾ­½¨¸´£¬£¬ £¬£¬£¬£¬½¨ÒéÊÜÓ°ÏìµÄÓû§ÊµÊ±Éý¼¶¸üе½OpenSSH 8.8¡£¡£¡£¡£¡£¡£

ÏÂÔØÁ´½Ó£º

http://www.openssh.com/releasenotes.html

 

0x03 ²Î¿¼Á´½Ó

https://www.openssh.com/security.html

https://www.openssh.com/txt/release-8.8

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41617

 

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V1.0

2021-09-27

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CNVD£ºwww.cnvd.org.cn

CNNVD£ºwww.cnnvd.org.cn

CVE£ºcve.mitre.org

CVSS£ºwww.first.org

NVD£ºnvd.nist.gov

 

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