¡¾Îó²îͨ¸æ¡¿Apache Subversion Use-After-FreeÎó²î£¨CVE-2022-24070£©

Ðû²¼Ê±¼ä 2022-04-19

0x00 Îó²î¸ÅÊö

CVE   ID

CVE-2022-24070

·¢Ã÷ʱ¼ä

2022-04-12

Àà    ÐÍ

UAF

µÈ    ¼¶

¸ßΣ

Ô¶³ÌʹÓÃ

ÊÇ

Ó°Ïì¹æÄ£


¹¥»÷ÖØÆ¯ºó

µÍ

Óû§½»»¥

ÎÞ

PoC/EXP


ÔÚҰʹÓÃ


 

0x01 Îó²îÏêÇé

Apache Subversion£¨SVN£©ÊÇÒ»¸ö¿ªÔ´µÄ¼¯ÖÐʽ°æ±¾¿ØÖÆÏµÍ³¡£¡£¡£¡£¡£¡£

4ÔÂ12ÈÕ£¬ £¬£¬£¬£¬ApacheÐû²¼Ç徲ͨ¸æ£¬ £¬£¬£¬£¬ÐÞ¸´ÁËApache SubversionÖеÄÒ»¸öUse-After-FreeÎó²î£¨CVE-2022-24070£©£¬ £¬£¬£¬£¬ÆäCVSSÆÀ·ÖΪ7.5¡£¡£¡£¡£¡£¡£

Subversion µÄ mod_dav_svn ÔÚ²éÕÒ»ùÓÚ·¾¶µÄÊÚȨ¹æÔòʱÈÝÒ×·ºÆð Use-After-FreeÎÊÌ⣬ £¬£¬£¬£¬¿ÉÄܵ¼Ö´¦Öóͷ£ÇëÇóµÄ HTTPD ÊÂÇéÀú³ÌÍ߽⣬ £¬£¬£¬£¬´Ó¶øµ¼Ö¾ܾøÐ§ÀÍ¡£¡£¡£¡£¡£¡£

 

Ó°Ïì¹æÄ£

Apache Subversion httpd servers 1.10.0-1.10.7

Apache Subversion httpd servers 1.14.0-1.14.1

×¢£º²»Ê¹ÓÃmod_dav_svnµÄЧÀÍÆ÷²»ÊÜ´ËÎó²îÓ°Ïì¡£¡£¡£¡£¡£¡£

 

0x02 Çå¾²½¨Òé

ÏÖÔÚ´ËÎó²îÒѾ­ÐÞ¸´£¬ £¬£¬£¬£¬½¨ÒéÊÜÓ°ÏìÓû§ÊµÊ±Éý¼¶¸üе½ÒÔϰ汾£º

Subversion httpd servers 1.14.2

Subversion httpd servers 1.10.8

ÏÂÔØÁ´½Ó£º

https://subversion.apache.org/download.cgi

²¹¶¡ÏÂÔØÁ´½Ó£º

https://subversion.apache.org/security/CVE-2022-24070-advisory.txt

 

0x03 ²Î¿¼Á´½Ó

https://subversion.apache.org/security/CVE-2022-24070-advisory.txt

https://issues.apache.org/jira/browse/SVN-4880

https://nvd.nist.gov/vuln/detail/CVE-2022-24070

 

0x04 °æ±¾ÐÅÏ¢

°æ±¾

ÈÕÆÚ

ÐÞ¸ÄÄÚÈÝ

V1.0

2022-04-19

Ê×´ÎÐû²¼

 

0x05 ¸½Â¼

ÄϹ¬NGÓéÀÖ¼ò½é

ÄϹ¬NGÓéÀÖ¹«Ë¾½¨ÉèÓÚ1996Ä꣬ £¬£¬£¬£¬²¢ÓÚ2010Äê6ÔÂ23ÈÕÔÚÉî½»ËùÖÐС°åÕýʽ¹ÒÅÆÉÏÊУ¬ £¬£¬£¬£¬ÊǺ£ÄÚ¼«¾ßʵÁ¦µÄ¡¢ÓµÓÐÍêÈ«×ÔÖ÷֪ʶ²úȨµÄÍøÂçÇå¾²²úÆ·¡¢¿ÉÐÅÇå¾²ÖÎÀíÆ½Ì¨¡¢Ç徲ЧÀÍÓë½â¾ö¼Æ»®µÄ×ÛºÏÌṩÉÌ¡£¡£¡£¡£¡£¡£

¹«Ë¾×ܲ¿Î»ÓÚ±±¾©ÊÐÖйشåÈí¼þÔ°£¬ £¬£¬£¬£¬ÔÚÌìϸ÷Ê¡¡¢ÊС¢×ÔÖÎÇøÉèÓзÖÖ§»ú¹¹£¬ £¬£¬£¬£¬ÓµÓÐÁýÕÖÌìϵÄÇþµÀϵͳºÍÊÖÒÕÖ§³ÖÖÐÐÄ£¬ £¬£¬£¬£¬²¢ÔÚ±±¾©¡¢ÉϺ£¡¢³É¶¼¡¢¹ãÖÝ¡¢³¤É³¡¢º¼ÖÝµÈ¶àµØÉèÓÐÑз¢ÖÐÐÄ¡£¡£¡£¡£¡£¡£

¶àÄêÀ´£¬ £¬£¬£¬£¬ÄϹ¬NGÓéÀÖÖÂÁ¦ÓÚÌṩ¾ßÓйú¼Ê¾ºÕùÁ¦µÄ×ÔÖ÷Á¢ÒìµÄÇå¾²²úÆ·ºÍ×î¼Ñʵ¼ùЧÀÍ£¬ £¬£¬£¬£¬×ÊÖú¿Í»§ÖÜÈ«ÌáÉýÆäIT»ù´¡ÉèÊ©µÄÇå¾²ÐÔºÍÉú²úЧÄÜ£¬ £¬£¬£¬£¬Îª´òÔìºÍÌáÉý¹ú¼Ê»¯µÄÃñ×åÐÅÏ¢Çå¾²¹¤ÒµÁì¾üÆ·ÅÆ¶ø²»Ð¸Æð¾¢¡£¡£¡£¡£¡£¡£

 

¹ØÓÚÄϹ¬NGÓéÀÖ

ÄϹ¬NGÓéÀÖÇå¾²Ó¦¼±ÏìÓ¦ÖÐÐÄÖ÷ÒªÕë¶ÔÖ÷ÒªÇå¾²Îó²îµÄÔ¤¾¯¡¢¸ú×ٺͷÖÏíÈ«Çò×îеÄÍþвÇ鱨ºÍÇå¾²±¨¸æ¡£¡£¡£¡£¡£¡£

¹Ø×¢ÒÔϹ«Öںţ¬ £¬£¬£¬£¬»ñȡȫÇò×îÐÂÇå¾²×ÊѶ£º

image.png