{"id":140018,"date":"2025-08-04T11:12:07","date_gmt":"2025-08-04T09:12:07","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-clang-namereny-dobavit-rezhim-usilennoj-bezopasnosti"},"modified":"2025-08-04T11:12:07","modified_gmt":"2025-08-04T09:12:07","slug":"v-clang-namereny-dobavit-rezhim-usilennoj-bezopasnosti","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/v-clang-namereny-dobavit-rezhim-usilennoj-bezopasnosti","title":{"rendered":"A Clang biztons\u00e1gi m\u00f3d hozz\u00e1ad\u00e1s\u00e1t tervezik.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Aaron Ballman, a f\u0151 Clang ford\u00edt\u00f3felel\u0151s \u00e9s a WG21 (C++) \u00e9s WG14 (C) szabv\u00e1nyok fejleszt\u0151csapat\u00e1nak tagja, megkezdte a Clang ford\u00edt\u00f3ban a biztons\u00e1gi m\u00f3d hozz\u00e1ad\u00e1s\u00e1nak megvitat\u00e1s\u00e1t. Az \u00faj m\u00f3d lehet\u0151v\u00e9 teszi egy opci\u00f3k\u00e9szlet egyszerre t\u00f6rt\u00e9n\u0151 aktiv\u00e1l\u00e1s\u00e1t a v\u00e9delem fokoz\u00e1sa \u00e9rdek\u00e9ben, hasonl\u00f3an a GCC 14 \u00e1ltal bevezetett '-fhardened' z\u00e1szl\u00f3hoz, amely az al\u00e1bbi lehet\u0151s\u00e9geket aktiv\u00e1lja: '-D_FORTIFY_SOURCE=3 -D_GLIBCXX_ASSERTIONS -ftrivial-auto-var-init=zero -fPIE -pie -Wl,-z,relro,-z,now -fstack-protector-strong -fstack-clash-protection -fcf-protection=full'.     <\/p>\n<p>Jelenleg folyamatban van a biztons\u00e1gi v\u00e9delmi lehet\u0151s\u00e9gek hozz\u00e1ad\u00e1sa a C \u00e9s C++ szabv\u00e1nyokhoz, de ez a folyamat nem gyors, mivel a Clang m\u00e1r el\u00e9rhet\u0151 egyedi opci\u00f3kat k\u00edn\u00e1l tov\u00e1bbi v\u00e9delmi mechanizmusokkal. A v\u00e9delmi m\u00f3dszerek gyakran k\u00fcl\u00f6nb\u00f6z\u0151 inkompatibilit\u00e1sokat okoznak a megl\u00e9v\u0151 k\u00f3ddal vagy az ABI megs\u00e9rt\u00e9s\u00e9t, ami megakad\u00e1lyozza azok alap\u00e9rtelmezett aktiv\u00e1l\u00e1s\u00e1t. Ezenk\u00edv\u00fcl az ilyen opci\u00f3k sz\u00e9tsz\u00f3rtak (ford\u00edt\u00e1si vez\u00e9rl\u0151 flagok, g\u00e9pi utas\u00edt\u00e1sok gener\u00e1l\u00e1s\u00e1hoz kapcsol\u00f3d\u00f3 flagok, hardverarchitekt\u00far\u00e1khoz k\u00f6t\u0151d\u0151 figyelmeztet\u00e9sek, diagnosztikai m\u00f3dok, makr\u00f3k), rosszul dokument\u00e1ltak, \u00e9s sok fejleszt\u0151 figyelmen k\u00edv\u00fcl hagyja \u0151ket.       <\/p>\n<p>Az egys\u00e9ges be\u00e1ll\u00edt\u00e1s egys\u00e9ges\u00edti a biztons\u00e1ggal kapcsolatos opci\u00f3k aktiv\u00e1l\u00e1s\u00e1t \u00e9s megk\u00f6nny\u00edti azok alkalmaz\u00e1s\u00e1t. Sz\u00e1mos lehet\u0151s\u00e9g van a fokozott biztons\u00e1gi m\u00f3d aktiv\u00e1l\u00e1s\u00e1ra, p\u00e9ld\u00e1ul a '-fhardened' z\u00e1szl\u00f3, a '--config=hardened' be\u00e1ll\u00edt\u00e1scsoport, k\u00fcl\u00f6n\u00e1ll\u00f3 meghajt\u00f3 (clang --driver-mode) vagy a ford\u00edt\u00e1shoz, k\u00f3dgener\u00e1l\u00e1shoz \u00e9s figyelmeztet\u00e9sek megjelen\u00edt\u00e9s\u00e9hez kapcsol\u00f3d\u00f3 '-fhardened, -mhardened \u00e9s -Whardened' k\u00fcl\u00f6n opci\u00f3k. A m\u00f3d a k\u00f6vetkez\u0151ket tartalmazhat:  <\/p>\n<ul>\n<li class=\"l\"> A ford\u00edt\u00f3 k\u00e9pess\u00e9gei: -ftrivial-auto-var-init, -fPIE, -fcf-protection stb.\n<li class=\"l\"> A c\u00e9lplatformok k\u00f3dgener\u00e1l\u00e1s\u00e1hoz kapcsol\u00f3d\u00f3 k\u00e9pess\u00e9gek: -mspeculative-load-hardening, -mlvi-hardening stb.\n<li class=\"l\"> Figyelmeztet\u00e9sek: -Wall, -Wextra, -Werror=return-type stb.\n<li class=\"l\"> Biztons\u00e1gi er\u0151s\u00edt\u00e9si m\u00f3dok a standard f\u00fcggv\u00e9nyt\u00e1rban.\n<li class=\"l\"> Makr\u00f3k: _FORTIFY_SOURCE, _GLIBCXX_ASSERTIONS stb.\n<li class=\"l\"> K\u00f6vetelm\u00e9ny az alkalmazott nyelvi szabv\u00e1ny explicit kiv\u00e1laszt\u00e1s\u00e1ra.\n<li class=\"l\"> A C89 \u00e9s C++98 elavult szabv\u00e1nyainak haszn\u00e1lat\u00e1ra vonatkoz\u00f3 k\u00f3d ford\u00edt\u00e1s\u00e1nak megtagad\u00e1sa.\n<li class=\"l\"> Tov\u00e1bbi flagok \u00e1tad\u00e1sa a linkernek, p\u00e9ld\u00e1ul a c\u00edmek v\u00e9letlen\u00edt\u00e9s\u00e9hez.  <\/ul>\n<p>Forr\u00e1s: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=63675\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0410\u0430\u0440\u043e\u043d \u0411\u0430\u043b\u043b\u043c\u0430\u043d (Aaron Ballman), \u0433\u043b\u0430\u0432\u043d\u044b\u0439 \u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0430\u044e\u0449\u0438\u0439 \u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0442\u043e\u0440 Clang \u0438 \u0443\u0447\u0430\u0441\u0442\u043d\u0438\u043a \u043a\u043e\u043c\u0430\u043d\u0434 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043e\u0432 WG21 (C++) \u0438 WG14 (C), \u043d\u0430\u0447\u0430\u043b \u043e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u0435 \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0432 \u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0442\u043e\u0440 Clang \u0440\u0435\u0436\u0438\u043c\u0430 \u0443\u0441\u0438\u043b\u0435\u043d\u0438\u044f \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438. \u041d\u043e\u0432\u044b\u0439 \u0440\u0435\u0436\u0438\u043c \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442 \u0440\u0430\u0437\u043e\u043c \u0430\u043a\u0442\u0438\u0432\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u043d\u0430\u0431\u043e\u0440 \u043e\u043f\u0446\u0438\u0439 \u0434\u043b\u044f \u0443\u0441\u0438\u043b\u0435\u043d\u0438\u044f \u0437\u0430\u0449\u0438\u0442\u044b \u043f\u043e \u0430\u043d\u0430\u043b\u043e\u0433\u0438\u0438 \u0441 \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u043d\u044b\u043c \u0432 GCC 14 \u0444\u043b\u0430\u0433\u043e\u043c &#171;-fhardened&#187;, \u043f\u0440\u0438 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0442\u0441\u044f \u043e\u043f\u0446\u0438\u0438 &#171;-D_FORTIFY_SOURCE=3 -D_GLIBCXX_ASSERTIONS -ftrivial-auto-var-init=zero -fPIE -pie [&hellip;]<\/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-140018","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0410\u0430\u0440\u043e\u043d \u0411\u0430\u043b\u043b\u043c\u0430\u043d (Aaron Ballman), \u0433\u043b\u0430\u0432\u043d\u044b\u0439 \u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0430\u044e\u0449\u0438\u0439 \u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0442\u043e\u0440 Clang \u0438 \u0443\u0447\u0430\u0441\u0442\u043d\u0438\u043a \u043a\u043e\u043c\u0430\u043d\u0434 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