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¡¾Ç徲ͨ¸æ¡¿WebLogic¶à¸ö¸ßΣÎó²îͨ¸æ

2021-07-22

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7ÔÂ21ÈÕ£¬AG¹«Ë¾¿Æ¼¼CERT¼à²âµ½Oracle¹Ù·½Ðû²¼ÁË2021Äê7ÔÂÒªº¦²¹¶¡¸üÐÂͨ¸æCPU£¨Critical Patch Update£©£¬¹²ÐÞ¸´ÁË342¸ö²î±ðˮƽµÄÎó²î£¬ÆäÖаüÀ¨3¸öÓ°ÏìWebLogicµÄÑÏÖØÎó²î£¬Ê¹ÓÃÖØÆ¯ºóµÍ£¬½¨ÒéÓû§¾¡¿ì½ÓÄɲ½·¥£¬¶Ô´Ë´ÎµÄÎó²î¾ÙÐзÀ»¤¡£

CVE-2021-2382/CVE-2021-2394/CVE-2021-2397£ºÎ´¾­Éí·ÝÑéÖ¤µÄ¹¥»÷Õß·¢ËͶñÒâ½á¹¹µÄT3»òIIOPЭÒéÇëÇ󣬿ÉÔÚÄ¿µÄ·þÎñÆ÷ÉÏÖ´ÐÐí§Òâ´úÂ룬CVSSÆÀ·ÖΪ9.8

CVE-2021-2376/CVE-2021-2378£ºÎ´¾­Éí·ÝÑéÖ¤µÄ¹¥»÷Õßͨ¹ýT3»òIIOPЭÒé·¢ËͶñÒâÇëÇ󣬿ÉÔì³ÉÄ¿µÄ·þÎñÆ÷¹ÒÆð»òÍ߽⣬CVSSÆÀ·ÖΪ7.5

CVE-2015-0254£º´ËÎó²î±£´æÓÚApache Standard TaglibsÖУ¬µ±Ó¦ÓóÌÐòʹÓà <x:parse> »ò <x:transform> ±êÇ©´¦Öóͷ£²»ÊÜÐÅÍеÄXMLÎĵµÊ±£¬1.2.3°æ±¾Ö®Ç°µÄ Apache Standard TaglibsÔÊÐíÔ¶³Ì¹¥»÷ÕßʹÓÃXSLT À©Õ¹Ö´ÐÐí§Òâ´úÂë»ò¾ÙÐÐXMLÍⲿʵÌå×¢Èë(XXE) ¹¥»÷£¬CVSSÆÀ·ÖΪ7.3

CVE-2021-2403£ºÎ´¾­Éí·ÝÑéÖ¤µÄ¹¥»÷Õß¿ÉÒÔͨ¹ýHTTP·¢ËͶñÒâÇëÇó£¬Î´ÊÚȨ»á¼ûÄ¿µÄ·þÎñÆ÷µÄijЩÊý¾Ý£¬CVSSÆÀ·ÖΪ5.3

 

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https://www.oracle.com/security-alerts/cpujul2021.html#AppendixFMW

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WebLogic Server 10.3.6.0.0

WebLogic Server 12.1.3.0.0

WebLogic Server 12.2.1.3.0

WebLogic Server 12.2.1.4.0

WebLogic Server 14.1.1.0.0

 

Èý.  Îó²î¼ì²â

3.1  ÍâµØ¼ì²â

¿ÉʹÓÃÈçÏÂÏÂÁî¶ÔWebLogic°æ±¾ºÍ²¹¶¡×°ÖõÄÇéÐξÙÐÐÅŲé¡£

$ cd /Oracle/Middleware/wlserver_10.3/server/lib

$ java -cp weblogic.jar   weblogic.version

 

ÔÚÏÔʾЧ¹ûÖУ¬ÈôÊÇûÓв¹¶¡×°ÖõÄÐÅÏ¢£¬Ôò˵Ã÷±£´æÎ£º¦£¬ÈçÏÂͼËùʾ£º

 

3.2  T3ЭÒé̽²â

Nmap¹¤¾ßÌṩÁËWebLogic T3ЭÒéµÄɨÃè¾ç±¾£¬¿É̽²â¿ªÆôT3·þÎñµÄWebLogicÖ÷»ú¡£ÏÂÁîÈçÏ£º

nmap -n -v -Pn   –sV [Ö÷»ú»òÍø¶ÎµØµã] –p£¨Ä¬ÈÏ£©7001,7002 --script=weblogic-t3-info.nse

ÈçÏÂͼºì¿òËùʾ£¬Ä¿µÄ¿ªÆôÁËT3ЭÒéÇÒWebLogic°æ±¾ÔÚÊÜÓ°Ïì¹æÄ£Ö®ÄÚ£¬ÈôÊÇÏà¹ØÖ°Ô±Ã»ÓÐ×°Öùٷ½µÄÇå¾²²¹¶¡£¬Ôò±£´æÎó²îΣº¦¡£

 

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4.1  ²¹¶¡¸üÐÂ

ÏÖÔÚOracleÒÑÐû²¼²¹¶¡ÐÞ¸´ÁËÉÏÊöÎó²î£¬ÇëÓû§²Î¿¼¹Ù·½Í¨¸æÊµÊ±ÏÂÔØÊÜÓ°Ïì²úÆ·¸üв¹¶¡£¬²¢²ÎÕÕ²¹¶¡×°ÖðüÖеÄreadmeÎļþ¾ÙÐÐ×°ÖøüУ¬ÒÔ°ü¹Üºã¾ÃÓÐÓõķÀ»¤¡£

×¢£ºOracle¹Ù·½²¹¶¡ÐèÒªÓû§³ÖÓÐÕý°æÈí¼þµÄÔÊÐíÕ˺Å£¬Ê¹ÓøÃÕ˺ÅÉϰ¶https://support.oracle.comºó£¬¿ÉÒÔÏÂÔØ×îв¹¶¡¡£

4.2  ÔÝʱ·À»¤²½·¥

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4.2.1 ÏÞÖÆT3ЭÒé»á¼û

Óû§¿Éͨ¹ý¿ØÖÆT3ЭÒéµÄ»á¼ûÀ´ÔÝʱ×è¶ÏÕë¶ÔʹÓÃT3ЭÒéÎó²îµÄ¹¥»÷¡£WebLogic ServerÌṩÁËÃûΪ weblogic.security.net.ConnectionFilterImpl µÄĬÈÏÅþÁ¬É¸Ñ¡Æ÷£¬´ËÅþÁ¬É¸Ñ¡Æ÷½ÓÊÜËùÓд«ÈëÅþÁ¬£¬¿Éͨ¹ý´ËÅþÁ¬É¸Ñ¡Æ÷ÉèÖùæÔò£¬¶ÔT3¼°T3sЭÒé¾ÙÐлá¼û¿ØÖÆ£¬Ïêϸ²Ù×÷°ì·¨ÈçÏ£º

1. ½øÈëWebLogic¿ØÖÆÌ¨£¬ÔÚbase_domainµÄÉèÖÃÒ³ÃæÖУ¬½øÈë“Çå¾²”Ñ¡Ïî¿¨Ò³Ãæ£¬µã»÷“ɸѡÆ÷”£¬½øÈëÅþÁ¬É¸Ñ¡Æ÷ÉèÖá£

 

2. ÔÚÅþÁ¬É¸Ñ¡Æ÷ÖÐÊäÈ룺weblogic.security.net.ConnectionFilterImpl£¬²Î¿¼ÒÔÏÂд·¨£¬ÔÚÅþÁ¬É¸Ñ¡Æ÷¹æÔòÖÐÉèÖÃÇÐºÏÆóÒµÏÖÕæÏàÐεĹæÔò£º

127.0.0.1 * * allow t3 t3s

±¾»úIP ** allow t3 t3s

ÔÊÐí»á¼ûµÄIP  * * allow t3 t3s  

* * * deny t3 t3s

 

ÅþÁ¬É¸Ñ¡Æ÷¹æÔòÃûÌÃÈçÏ£ºtarget localAddress localPort action protocols£¬ÆäÖУº

· target Ö¸¶¨Ò»¸ö»ò¶à¸öҪɸѡµÄ·þÎñÆ÷¡£

· localAddress ¿É½ç˵·þÎñÆ÷µÄÖ÷»úµØµã¡£(ÈôÊÇÖ¸¶¨ÎªÒ»¸öÐǺŠ(*)£¬Ôò·µ»ØµÄÆ¥ÅäЧ¹û½«ÊÇËùÓÐÍâµØ IP µØµã¡£)

· localPort ½ç˵·þÎñÆ÷ÕýÔÚ¼àÌýµÄ¶Ë¿Ú¡£(ÈôÊÇÖ¸¶¨ÁËÐǺÅ£¬ÔòÆ¥Åä·µ»ØµÄЧ¹û½«ÊÇ·þÎñÆ÷ÉÏËùÓпÉÓõĶ˿Ú)¡£

· action Ö¸¶¨ÒªÖ´ÐеIJÙ×÷¡£(Öµ±ØÐèΪ“allow”»ò“deny”¡£)

· protocols ÊÇÒª¾ÙÐÐÆ¥ÅäµÄЭÒéÃûÁбí¡£(±ØÐèÖ¸¶¨ÏÂÁÐÆäÖÐÒ»¸öЭÒ飺http¡¢https¡¢t3¡¢t3s¡¢giop¡¢giops¡¢dcom »ò ftp¡£) ÈôÊÇδ½ç˵ЭÒ飬ÔòËùÓÐЭÒé¶¼½«ÓëÒ»¸ö¹æÔòÆ¥Åä¡£

3. ÉúÑĺóÈô¹æÔòδÉúЧ£¬½¨ÒéÖØÐÂÆô¶¯WebLogic·þÎñ£¨ÖØÆôWebLogic·þÎñ»áµ¼ÖÂÓªÒµÖÐÖ¹£¬½¨ÒéÏà¹ØÖ°Ô±ÆÀ¹ÀΣº¦ºó£¬ÔÙ¾ÙÐвÙ×÷£©¡£ÒÔWindowsÇéÐÎΪÀý£¬ÖØÆô·þÎñµÄ°ì·¨ÈçÏ£º

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4.2.2 ½ûÓÃIIOPЭÒé

Óû§¿Éͨ¹ý¹Ø±ÕIIOPЭÒé×è¶ÏÕë¶ÔʹÓÃIIOPЭÒéÎó²îµÄ¹¥»÷£¬²Ù×÷ÈçÏ£º

ÔÚWebLogic¿ØÖÆÌ¨ÖУ¬Ñ¡Ôñ“·þÎñ”->“AdminServer”->“ЭÒ锣¬×÷·Ï“ÆôÓÃIIOP”µÄ¹´Ñ¡¡£²¢ÖØÆôWebLogicÏîÄ¿£¬Ê¹ÉèÖÃÉúЧ¡£

 

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