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¡¾Íþвͨ¸æ¡¿Atlassian?Confluence?Ô¶³Ì´úÂëÖ´ÐÐÎó²î£¨CVE-2021-26084£©Í¨¸æ

2021-08-27

Ò».  Îó²î¸ÅÊö

¿ËÈÕ£¬AG¹«Ë¾¿Æ¼¼CERT¼à²âµ½Atlassian¹Ù·½Ðû²¼ÁËConfluence Server Webwork OGNL ×¢ÈëÎó²î£¨CVE-2021-26084£©µÄÇ徲ͨ¸æ£¬Ô¶³Ì¹¥»÷ÕßÔÚ¾­ÓÉÉí·ÝÑéÖ¤»òÔÚÌØ¶¨ÇéÐÎÏÂδ¾­Éí·ÝÑéÖ¤µÄÇéÐÎÏ£¬¿É½á¹¹OGNL±í´ïʽ¾ÙÐÐ×¢È룬ʵÏÖÔÚ Confluence Server»òData CenterÉÏÖ´ÐÐí§Òâ´úÂ룬CVSSÆÀ·ÖΪ9.8 ¡£ÇëÏà¹ØÓû§¾¡¿ì½ÓÄɲ½·¥¾ÙÐзÀ»¤ ¡£

Atlassian ConfluenceÊÇAtlassian¹«Ë¾³öÆ·µÄרҵwiki³ÌÐò ¡£Ëü¿ÉÒÔ×÷Ϊһ¸ö֪ʶÖÎÀíµÄ¹¤¾ß£¬Í¨¹ýËüÄܹ»ÊµÏÖÍŶӳÉÔ±Ö®¼äµÄЭ×÷ºÍ֪ʶ¹²Ïí ¡£

²Î¿¼Á´½Ó£º

https://confluence.atlassian.com/doc/confluence-security-advisory-2021-08-25-1077906215.html

¶þ.  Ó°Ïì¹æÄ£

ÊÜÓ°Ïì°æ±¾

Confluence < 6.13.23

6.14.0 ≤ Confluence < 7.4.11

7.5.0 ≤ Confluence < 7.11.6

7.12.0 ≤ Confluence < 7.12.5

Confluence < 7.13.0

 

²»ÊÜÓ°Ïì°æ±¾

Confluence = 6.13.23

Confluence = 7.4.11

Confluence = 7.11.6

Confluence = 7.12.5

Confluence = 7.13.0

 

Èý.  Îó²î¼ì²â

3.1  È˹¤¼ì²â

Óû§¿Éͨ¹ýÉó²éÄ¿½ñConfluence°æ±¾ÊÇ·ñÔÚÊÜÓ°Ïì¹æÄ£ÄÚ£¬¶ÔÄ¿½ñ·þÎñÊÇ·ñÊÜ´ËÎó²îÓ°Ïì¾ÙÐÐÅŲé ¡£µã»÷£¬Ñ¡Ôñ“¹ØÓÚConfluence”£¬¼´¿É¶ÔÄ¿½ñ°æ±¾¾ÙÐÐÉó²é ¡£

 

 

ËÄ.  Îó²î·À»¤

4.1  ¹Ù·½Éý¼¶

¹Ù·½½¨ÒéÓû§Éý¼¶ÖÁ×îа汾£¬ÒÔ°ü¹Ü·þÎñµÄÇå¾²ÐÔ¼°ÎȹÌÐÔ ¡£ÏÂÔØÁ´½Ó£ºhttps://www.atlassian.com/software/confluence/download-archives

ÈôÎÞ·¨Éý¼¶ÖÁ×îа汾£¬¿É²Î¿¼Ï±í£¬Éý¼¶ÖÁ¶ÔÓ¦ÐÞ¸´°æ±¾£º

ÊÜÓ°Ïì°æ±¾

ÐÞ¸´°æ±¾

6.13.x

6.13.23

7.4.x

7.4.11

7.11.x

7.11.6

7.12.x

7.12.5

ÆäËûÔçÆÚ°æ±¾

¿ÉÉý¼¶ÖÁ6.13.23¡¢7.4.11¡¢7.11.6¡¢7.12.5ÈÎÒ»°æ±¾

 

4.2  ÔÝʱ·À»¤²½·¥

ÈôÏà¹ØÓû§ÔÝʱÎÞ·¨¾ÙÐÐÉý¼¶²Ù×÷£¬Ò²¿Éͨ¹ýΪÍÐ¹Ü Confluence µÄ²Ù×÷ϵͳÔËÐÐÒÔϽÅÔ­À´»º½â¸ÃÎÊÌ⣺

https://confluence.atlassian.com/doc/confluence-security-advisory-2021-08-25-1077906215.html?spm=a2c4g.11174386.n2.3.1f8c4c07XTPS08#

»ùÓÚ Linux µÄ²Ù×÷ϵͳÉÏÔËÐÐµÄ Confluence ·þÎñÆ÷£º

ÈôÊÇÔÚ¼¯ÈºÖÐÔËÐÐ Confluence£¬ÔòÐèÒªÔÚÿ¸ö½ÚµãÉÏÖØ¸´´ËÀú³Ì ¡£Äú²»ÐèÒª¹Ø±ÕÕû¸ö¼¯Èº ¡£ 

1¡¢¹Ø±Õ Confluence ¡£ 

2¡¢ÏÂÔØ cve-2021-26084-update.sh µ½ Confluence Linux ·þÎñÆ÷ ¡£Á´½Ó£º

https://confluence.atlassian.com/doc/files/1077906215/1077916296/2/1629936383093/cve-2021-26084-update.sh

3¡¢±à¼­cve-2021-26084-update.shÎļþ²¢ÉèÖÃINSTALLATION_DIRECTORYΪÄúµÄ Confluence ×°ÖÃĿ¼£¬ÀýÈ磺 

INSTALLATION_DIRECTORY=/opt/atlassian/confluence

4¡¢ÉúÑÄÎļþ ¡£

5¡¢ÊÚÓè¾ç±¾Ö´ÐÐȨÏÞ ¡£

chmod 700 cve-2021-26084-update.sh

6¡¢¸ü¸ÄΪӵÓÐ Confluence ×°ÖÃĿ¼ÖÐÎļþµÄ Linux Óû§£¬ÀýÈ磺

$ ls -l /opt/atlassian/confluence | grep bin

drwxr-xr-x 3 root root 4096 Aug 18 17:07 bin

 

# In this first example, we change to the 'root' user

# to run the workaround script

$ sudo su root

 

$ ls -l /opt/atlassian/confluence | grep bin

drwxr-xr-x 3 confluence confluence 4096 Aug 18 17:07 bin

 

# In this second example, we need to change to the 'confluence' user

# to run the workaround script

 

$ sudo su confluence

7¡¢ÔËÐнâ¾öÒªÁì¾ç±¾ ¡£

$ ./cve-2021-26084-update.sh

8¡¢Ô¤ÆÚÊä³öӦȷÈÏ×î¶àÎå¸öÎļþ¸üв¢ÒÔ£º

Update completed!

¸üеÄÎļþÊýÄ¿»áÓÐËù²î±ð£¬Ïêϸȡ¾öÓÚÄúµÄ Confluence °æ±¾ ¡£

9¡¢ÖØÆô Confluence ¡£

Çë¼Ç×Å£¬ÈôÊÇÄúÔÚ¼¯ÈºÖÐÔËÐÐ Confluence£¬ÇëÈ·±£ÔÚËùÓнڵãÉÏÔËÐд˾籾 ¡£

 

ÔÚ Microsoft Windows ÉÏÔËÐÐµÄ Confluence ·þÎñÆ÷£º

ÈôÊÇÔÚ¼¯ÈºÖÐÔËÐÐ Confluence£¬ÔòÐèÒªÔÚÿ¸ö½ÚµãÉÏÖØ¸´´ËÀú³Ì ¡£Äú²»ÐèÒª¹Ø±ÕÕû¸ö¼¯Èº ¡£ 

1¡¢¹Ø±Õ Confluence ¡£

2¡¢ÏÂÔØ cve-2021-26084-update.ps1 µ½ Confluence Windows ·þÎñÆ÷ ¡£Á´½Ó£º

https://confluence.atlassian.com/doc/files/1077906215/1077916298/2/1629936382985/cve-2021-26084-update.ps1

3¡¢±à¼­cve-2021-26084-update.ps1Îļþ²¢ÉèÖÃINSTALLATION_DIRECTORY. Ìæ»»Set_Your_Confluence_Install_Dir_HereΪÄúµÄ Confluence ×°ÖÃĿ¼£¬ÀýÈ磺

$INSTALLATION_DIRECTORY='C:\Program Files\Atlassian\Confluence'

4¡¢ÉúÑÄÎļþ ¡£

5¡¢·­¿ª Windows PowerShell£¨Ê¹ÓÃÒÔÖÎÀíÔ±Éí·ÝÔËÐУ© ¡£

6¡¢ÓÉÓÚ PowerShell µÄĬÈÏÏÞÖÆÐÔÖ´ÐÐÕ½ÂÔ£¬ÇëʹÓÃÒÔÏÂÈ·ÇÐÏÂÁîÔËÐÐ PowerShell£º

Get-Content .\cve-2021-26084-update.ps1 | powershell.exe -noprofile -

7¡¢Ô¤ÆÚµÄÊä³öÓ¦¸ÃÏÔʾ×î¶àÎå¸öÎļþ¸üеÄ״̬£¬Ã»ÓÐÓöµ½¹ýʧ£¨¹ýʧͨ³£ÏÔʾΪºìÉ«£©²¢ÒÔ£º

Update completed!

¸üеÄÎļþÊýÄ¿»áÓÐËù²î±ð£¬Ïêϸȡ¾öÓÚÄúµÄ Confluence °æ±¾ ¡£

8¡¢ÖØÆô Confluence ¡£

Çë¼Ç×Å£¬ÈôÊÇÄúÔÚ¼¯ÈºÖÐÔËÐÐ Confluence£¬ÇëÈ·±£ÔÚËùÓнڵãÉÏÔËÐд˾籾 ¡£

 

ÉùÃ÷

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AG¹«Ë¾¿Æ¼¼ÓµÓжԴËÇ徲ͨ¸æµÄÐÞ¸ÄÏ¢ÕùÊÍȨ ¡£ÈçÓû×ªÔØ»òÈö²¥´ËÇ徲ͨ¸æ£¬±ØÐè°ü¹Ü´ËÇ徲ͨ¸æµÄÍêÕûÐÔ£¬°üÀ¨°æÈ¨ÉùÃ÷µÈËùÓÐÄÚÈÝ ¡£Î´¾­AG¹«Ë¾¿Æ¼¼ÔÊÐí£¬²»µÃí§ÒâÐ޸ĻòÕßÔö¼õ´ËÇ徲ͨ¸æÄÚÈÝ£¬²»µÃÒÔÈκη½·¨½«ÆäÓÃÓÚÉÌҵĿµÄ ¡£

 

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