{"id":107077,"date":"2023-03-03T12:48:24","date_gmt":"2023-03-03T10:48:24","guid":{"rendered":"https:\/\/prohoster.info\/?p=107077"},"modified":"2023-03-05T11:49:19","modified_gmt":"2023-03-05T09:49:19","slug":"uyazvimost-v-strongswan-ipsec-dopuskayushhaya-udalyonnoe-vypolnenie-koda","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/uyazvimost-v-strongswan-ipsec-dopuskayushhaya-udalyonnoe-vypolnenie-koda","title":{"rendered":"Viga strongSwan IPsec, mis v\u00f5imaldab kaugkoodide t\u00e4itmist","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Saadaval on strongSwan 5.9.10 v\u00e4ljalase, tasuta pakett VPN-\u00fchenduste loomiseks IPSec protokolli p\u00f5hjal, mida kasutatakse Linuxis, Androidis, FreeBSD-s ja macOS-is. Uues versioonis on k\u00f5rvaldatud ohtlik turvaviga (CVE-2023-26463), mida saab kasutada autentimise \u00fcmbersuunamiseks, kuid mis v\u00f5ib potentsiaalselt viia ka r\u00fcndaja koodi t\u00e4itmiseni serveri v\u00f5i kliendi poolel. Probleem ilmneb TLS-p\u00f5histe EAP (Extensible Authentication Protocol) autentimismeetodite k\u00e4itamisel spetsiaalselt vormistatud sertifikaatide kontrollimisel. <\/p>\n

Viga on p\u00f5hjustatud sellest, et TLS-i t\u00f6\u00f6tleja aktsepteerib valesti naaberv\u00f5rgu sertifikaadist avatud v\u00f5tmeid, pidades neid usaldusv\u00e4\u00e4rseteks, mitte aga juhul, kui sertifikaati ei \u00f5nnestu edukalt kinnitada. Eriti siis, kui kutsutakse \u00fcles funktsiooni tls_find_public_key(), et m\u00e4\u00e4rata kindlaks usaldusv\u00e4\u00e4rsed sertifikaadid, kasutatakse avatud v\u00f5tme t\u00fc\u00fcbi p\u00f5hjal valimist. Probleem seisneb selles, et muutujat, mida kasutatakse otsingu jaoks v\u00f5tme t\u00fc\u00fcbi m\u00e4\u00e4ratlemiseks, seadistatakse igal juhul, isegi kui sertifikaat ei ole usaldusv\u00e4\u00e4rne. <\/p>\n

Lisaks v\u00f5imaldab v\u00f5tme manipuleerimine v\u00e4hendada linkide arvu (kui sertifikaat ei ole usaldusv\u00e4\u00e4rne, vabastatakse viide objektile p\u00e4rast v\u00f5tme t\u00fc\u00fcbi m\u00e4\u00e4ratlemist) ja eraldada m\u00e4lu veel kasutatavale v\u00f5tmega objektile. Arutatud puudus ei v\u00e4lista exploitide loomist teabe lekkimiseks m\u00e4lust ja enda koodi t\u00e4itmiseks. <\/p>\n

R\u00fcnnak server<\/a> teostatakse, kui klient saadab enda allkirjastatud sertifikaadi kliendi autentimiseks, kasutades meetodeid EAP-TLS, EAP-TTLS, EAP-PEAP ja EAP-TNC. R\u00fcnnak kliendi vastu v\u00f5ib toimuda l\u00e4bi tagasi saadetud serveriga<\/a> eriti vormistatud sertifikaadi. Haavatavus ilmneb versioonides strongSwan 5.9.8 ja 5.9.9. Pakettide v\u00e4rskenduste avaldamise j\u00e4lgimist saab teostada distributsioonide lehtedel: Debian, Ubuntu, Gentoo, RHEL, SUSE, Arch, FreeBSD, NetBSD.
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u0432\u044b\u043f\u0443\u0441\u043a strongSwan 5.9.10, \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0430\u043a\u0435\u0442\u0430 \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f VPN-\u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0439 \u043d\u0430 \u0431\u0430\u0437\u0435 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 IPSec, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u043e\u0433\u043e \u0432 Linux, Android, FreeBSD \u0438 macOS. \u0412 \u043d\u043e\u0432\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u043e\u043f\u0430\u0441\u043d\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2023-26463), \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0430 \u0434\u043b\u044f \u043e\u0431\u0445\u043e\u0434\u0430 \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438, \u043d\u043e \u043f\u043e\u0442\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u0442\u0430\u043a\u0436\u0435 \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044e \u043a\u043e\u0434\u0430 \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0435\u0433\u043e \u043d\u0430 \u0441\u0442\u043e\u0440\u043e\u043d\u0435 \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u0438\u043b\u0438 \u043a\u043b\u0438\u0435\u043d\u0442\u0430. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043f\u0440\u0438 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0435 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u044b\u0445 \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0432 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-107077","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47strongSwan IPsec-i haavatavus, mis v\u00f5imaldab kaugelt koodi k\u00e4ivitamist | ProHoster","description":"strongSwan 5.9.10 on VPN-\u00fchenduste tegemiseks m\u00f5eldud avatud l\u00e4htekoodiga pakett, mis p\u00f5hineb IPSec-protokollil ja mida kasutatakse Linuxis, Androidis, FreeBSD-s ja macOS-is, on n\u00fc\u00fcd saadaval. 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\u043a\u043e\u0434\u0430 | ProHoster","og:description":"\u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u0432\u044b\u043f\u0443\u0441\u043a strongSwan 5.9.10, \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0430\u043a\u0435\u0442\u0430 \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f VPN-\u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0439 \u043d\u0430 \u0431\u0430\u0437\u0435 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 IPSec, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u043e\u0433\u043e \u0432 Linux, Android, FreeBSD \u0438 macOS. \u0412 \u043d\u043e\u0432\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u043e\u043f\u0430\u0441\u043d\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2023-26463), \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c 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