¡¾Îó²îͨ¸æ¡¿FreeBSD bhyveÔ½½ç¶ÁÈ¡Îó²î£¨CVE-2024-41721£©
Ðû²¼Ê±¼ä 2024-09-23Ò»¡¢Îó²î¸ÅÊö
Îó²îÃû³Æ | FreeBSD bhyveÔ½½ç¶ÁÈ¡Îó²î | ||
CVE ID | CVE-2024-41721 | ||
Îó²îÀàÐÍ | Ô½½ç¶ÁÈ¡ | ·¢Ã÷ʱ¼ä | 2024-09-23 |
Îó²îÆÀ·Ö | 9.8 | Îó²îÆ·¼¶ | ¸ßΣ |
¹¥»÷ÏòÁ¿ | ÍøÂç | ËùÐèȨÏÞ | ÎÞ |
ʹÓÃÄÑ¶È | µÍ | Óû§½»»¥ | ÎÞ |
PoC/EXP | δ¹ûÕæ | ÔÚҰʹÓà | δ·¢Ã÷ |
FreeBSDÊÇÒ»ÖÖ¹¦Ð§Ç¿Ê¢¡¢Îȹ̿ɿ¿¡¢¿ªÔ´×ÔÓɵÄÀàUNIX²Ù×÷ϵͳ£¬ÆÕ±éÓ¦ÓÃÓÚ·þÎñÆ÷¡¢×ÀÃæϵͳºÍǶÈëʽϵͳµÈÁìÓò¡£ÔÚFreeBSDϵͳÖУ¬bhyve ÊÇÒ»ÖÖÓ²¼þ¼¶±ðµÄÐéÄ⻯ÊÖÒÕ£¬Ò²ÊÇFreeBSDϵÄÔÉúÐéÄâ»úÖÎÀíÆ÷£¬ÎªÓû§ÌṩÁËÒ»ÖÖ¸ßЧ¡¢ÎÞаÇÒÒ×ÓÚÖÎÀíµÄÐéÄ⻯½â¾ö¼Æ»®¡£
2024Äê9ÔÂ23ÈÕ£¬ÓÅ·¢¹ú¼ÊÍøÕ¾¹ÙÍø¼¯ÍÅVSRC¼à²âµ½FreeBSDÐû²¼Ç徲ͨ¸æ£¬ÐÞ¸´ÁËFreeBSD bhyveÄ£¿éÖеÄÒ»¸öÔ½½ç¶ÁÈ¡Îó²î£¨CVE-2024-41721£©£¬¸ÃÎó²îµÄCVSSÆÀ·ÖΪ9.8¡£
FreeBSDϵͳÖÐbhyveµÄXHCI·ÂÕ湦ЧÖб£´æÎó²î£¬ÓÉÓÚUSB´úÂëÖб£´æ½çÏßÑé֤ȱ·¦£¬¿ÉÄܵ¼Ö¶ÑÔ½½ç¶ÁÈ¡£¬½ø¶ø¿ÉÄܵ¼ÖÂí§ÒâдÈëºÍÔ¶³Ì´úÂëÖ´ÐУ¬ÈôÊǶñÒâÈí¼þÒÔÌØȨģʽÔÚbhyveÖÎÀíµÄÐéÄâ»ú£¨guest VM£©ÖÐÔËÐУ¬Ôò¿ÉÄÜʹÓøÃÎó²îµ¼ÖÂÐéÄâ»ú¼à¿Ø³ÌÐòÀú³ÌÍ߽⣬»òÔÚÖ÷»úÉ쵀 bhyve Óû§¿Õ¼äÀú³Ì£¨Í¨³£ÒÔrootȨÏÞÔËÐУ©ÖÐʵÏÖ´úÂëÖ´ÐС£
¶þ¡¢Ó°Ïì¹æÄ£
STABLE-14<= FreeBSD < 14.1-STABLE
14.1-RELEASE <= FreeBSD < 14.1-RELEASE-p5
14.0-RELEASE <= FreeBSD < 14.0-RELEASE-p11
STABLE-13<= FreeBSD < 13.4-STABLE
13.4-RELEASE <= FreeBSD < 13.4-RELEASE-p1
13.3-RELEASE <= FreeBSD < 13.3-RELEASE-p7
Èý¡¢Çå¾²²½·¥
3.1 Éý¼¶°æ±¾
ÏÖÔÚ¸ÃÎó²îÒÑÐÞ¸´£¬ÊÜÓ°ÏìÓû§¿ÉÉý¼¶µ½ÒÔÏÂFreeBSDÎȹ̰æ»òÐû²¼/Çå¾²·ÖÖ§ (releng)°æ±¾£¬Ðû²¼ÈÕÆÚÍíÓÚ2024-09-19¡£
FreeBSD stable 14£ºÉý¼¶µ½14.1-STABLE
FreeBSD releng 14.1£ºÉý¼¶µ½14.1-RELEASE-p5
FreeBSD releng 14.0£ºÉý¼¶µ½14.0-RELEASE-p11
FreeBSD stable 13£ºÉý¼¶µ½13.4-STABLE
FreeBSD releng 13.4£ºÉý¼¶µ½13.4-RELEASE-p1
FreeBSD releng 13.3£ºÉý¼¶µ½13.3-RELEASE-p7
ÏÂÔØÁ´½Ó£º
https://www.freebsd.org/where/
3.2 ÔÝʱ²½·¥
×¢ÖØ£¬bhyve ÔÚ Capsicum ɳÏäÖÐÔËÐУ¬Òò´Ë¶ñÒâ´úÂëÊܵ½ bhyve Àú³Ì¿ÉÓù¦Ð§µÄÏÞÖÆ¡£±ðµÄ£¬²»Ê¹ÓÃXHCI·ÂÕæµÄguests²»ÊܸÃÎó²îÓ°Ïì¡£
ÊÜÓ°ÏìÓû§Ò²¿Éͨ¹ý¶þ½øÖƲ¹¶¡»òÔ´´úÂë²¹¶¡¸üÐÂÒ×Êܹ¥»÷µÄϵͳ¡£
²Î¿¼Á´½Ó£º
https://www.freebsd.org/security/advisories/FreeBSD-SA-24:15.bhyve.asc
3.3 ͨÓý¨Òé
l °´ÆÚ¸üÐÂϵͳ²¹¶¡£¬ïÔÌϵͳÎó²î£¬ÌáÉý·þÎñÆ÷µÄÇå¾²ÐÔ¡£
l ÔöǿϵͳºÍÍøÂçµÄ»á¼û¿ØÖÆ£¬Ð޸ķÀ»ðǽսÂÔ£¬¹Ø±Õ·ÇÐëÒªµÄÓ¦Óö˿ڻò·þÎñ£¬ïÔ̽«Î£ÏÕ·þÎñ£¨ÈçSSH¡¢RDPµÈ£©Ì»Â¶µ½¹«Íø£¬ïÔ̹¥»÷Ãæ¡£
l ʹÓÃÆóÒµ¼¶Çå¾²²úÆ·£¬ÌáÉýÆóÒµµÄÍøÂçÇå¾²ÐÔÄÜ¡£
l ÔöǿϵͳÓû§ºÍȨÏÞÖÎÀí£¬ÆôÓöàÒòËØÈÏÖ¤»úÖƺÍ×îСȨÏÞÔÔò£¬Óû§ºÍÈí¼þȨÏÞÓ¦¼á³ÖÔÚ×îµÍÏ޶ȡ£
l ÆôÓÃÇ¿ÃÜÂëÕ½ÂÔ²¢ÉèÖÃΪ°´ÆÚÐ޸ġ£
3.4 ²Î¿¼Á´½Ó
https://www.freebsd.org/security/advisories/FreeBSD-SA-24:15.bhyve.asc
https://nvd.nist.gov/vuln/detail/CVE-2024-41721
ËÄ¡¢°æ±¾ÐÅÏ¢
°æ±¾ | ÈÕÆÚ | ±¸×¢ |
V1.0 | 2024-09-23 | Ê×´ÎÐû²¼ |
Îå¡¢¸½Â¼
5.1 ÓÅ·¢¹ú¼ÊÍøÕ¾¹ÙÍø¼ò½é
ÓÅ·¢¹ú¼ÊÍøÕ¾¹ÙÍø½¨ÉèÓÚ1996Ä꣬ÊÇÓÉÁôÃÀ²©Ê¿ÑÏÍû¼ÑŮʿ½¨ÉèµÄ¡¢ÓµÓÐÍêÈ«×ÔÖ÷֪ʶ²úȨµÄÐÅÏ¢Çå¾²¸ß¿Æ¼¼ÆóÒµ¡£ÊǺ£ÄÚ×î¾ßʵÁ¦µÄÐÅÏ¢Çå¾²²úÆ·¡¢Çå¾²·þÎñ½â¾ö¼Æ»®µÄÁ캽ÆóÒµÖ®Ò»¡£
¹«Ë¾×ܲ¿Î»ÓÚ±±¾©ÊÐÖйشåÈí¼þÔ°ÓÅ·¢¹ú¼ÊÍøÕ¾¹ÙÍø´óÏ㬹«Ë¾Ô±¹¤6000ÓàÈË£¬Ñз¢ÍŶÓ1200ÓàÈË, ÊÖÒÕ·þÎñÍŶÓ1300ÓàÈË¡£ÔÚÌìϸ÷Ê¡¡¢ÊС¢×ÔÖÎÇøÉèÁ¢·ÖÖ§»ú¹¹ÁùÊ®¶à¸ö£¬ÓµÓÐÁýÕÖÌìϵÄÏúÊÛϵͳ¡¢ÇþµÀϵͳºÍÊÖÒÕÖ§³Öϵͳ¡£¹«Ë¾ÓÚ2010Äê6ÔÂ23ÈÕÔÚÉîÛÚÖÐС°å¹ÒÅÆÉÏÊС££¨¹ÉƱ´úÂ룺002439£©
¶àÄêÀ´£¬ÓÅ·¢¹ú¼ÊÍøÕ¾¹ÙÍøÖÂÁ¦ÓÚÌṩ¾ßÓйú¼Ê¾ºÕùÁ¦µÄ×ÔÖ÷Á¢ÒìµÄÇå¾²²úÆ·ºÍ×î¼Ñʵ¼ù·þÎñ£¬×ÊÖú¿Í»§ÖÜÈ«ÌáÉýÆäIT»ù´¡ÉèÊ©µÄÇå¾²ÐÔºÍÉú²úЧÄÜ£¬Îª´òÔìºÍÌáÉý¹ú¼Ê»¯µÄÃñ×åÐÅÏ¢Çå¾²¹¤ÒµÁì¾üÆ·Åƶø²»Ð¸Æ𾢡£
5.2 ¹ØÓÚÓÅ·¢¹ú¼ÊÍøÕ¾¹ÙÍø
ÓÅ·¢¹ú¼ÊÍøÕ¾¹ÙÍøÇå¾²Ó¦¼±ÏìÓ¦ÖÐÐÄÒÑÐû²¼1000¶à¸öÎó²îͨ¸æºÍΣº¦Ô¤¾¯£¬ÎÒÃǽ«Ò»Á¬¸ú×ÙÈ«Çò×îеÄÍøÂçÇå¾²ÊÂÎñºÍÎó²î£¬ÎªÆóÒµµÄÐÅÏ¢Çå¾²±£¼Ý»¤º½¡£
¹Ø×¢ÎÒÃÇ£º