{"id":107183,"date":"2023-03-10T18:48:11","date_gmt":"2023-03-10T16:48:11","guid":{"rendered":"https:\/\/prohoster.info\/?p=107183"},"modified":"2023-03-13T12:06:39","modified_gmt":"2023-03-13T10:06:39","slug":"kriticheskaya-uyazvimost-v-wasmtime-runtime-dlya-webassembly-prilozhenij","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/kriticheskaya-uyazvimost-v-wasmtime-runtime-dlya-webassembly-prilozhenij","title":{"rendered":"Kritikus s\u00e9r\u00fcl\u00e9kenys\u00e9g a Wasmtime-ban, a WebAssembly-alkalmaz\u00e1sok futtat\u00f3j\u00e1ban","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

A Wasmtime 6.0.1, 5.0.1 \u00e9s 4.0.1 jav\u00edt\u00f3friss\u00edt\u00e9seiben egy CVE-2023-26489 azonos\u00edt\u00f3j\u00fa sebezhet\u0151s\u00e9get jav\u00edtottak, amelyet kritikus vesz\u00e9lyess\u00e9gi szinttel l\u00e1ttak el. A sebezhet\u0151s\u00e9g lehet\u0151v\u00e9 teszi az adatok \u00edr\u00e1s\u00e1t a WebAssembly-k\u00f3d izol\u00e1lt k\u00f6rnyezet\u00e9n k\u00edv\u00fcli mem\u00f3ria ter\u00fcletre, amelyet a t\u00e1mad\u00f3k potenci\u00e1lisan kihaszn\u00e1lhatnak a k\u00f3djuk v\u00e9grehajt\u00e1s\u00e1ra az izol\u00e1lt WASI k\u00f6rnyezetb\u0151l. <\/p>\n

A Wasmtime egy runtime a WebAssembly-alkalmaz\u00e1sok v\u00e9grehajt\u00e1s\u00e1ra, amely WASI (WebAssembly System Interface) kiterjeszt\u00e9sekkel m\u0171k\u00f6dik, mint norm\u00e1l elk\u00fcl\u00f6n\u00edtett alkalmaz\u00e1sok. Az eszk\u00f6zk\u00e9szlet Rust nyelven \u00edr\u00f3dott, \u00e9s a sebezhet\u0151s\u00e9get logikai hiba okozta a mem\u00f3ria line\u00e1ris c\u00edmz\u00e9s\u00e9nek szab\u00e1lyainak meghat\u00e1roz\u00e1sa sor\u00e1n a Cranelift k\u00f3dgener\u00e1torban, amely az architekt\u00far\u00e1t\u00f3l f\u00fcggetlen k\u00f6zb\u00fcls\u0151 reprezent\u00e1ci\u00f3t alak\u00edt \u00e1t v\u00e9grehajthat\u00f3 g\u00e9pi k\u00f3dd\u00e1 az x86_64 architekt\u00far\u00e1hoz. <\/p>\n

Kifejezetten a WebAssembly-alkalmaz\u00e1sok sz\u00e1m\u00e1ra 35 bites hat\u00e9kony c\u00edmeket sz\u00e1moltak, a WebAssembly-ben enged\u00e9lyezett 33 bites c\u00edmek helyett, amely elmozd\u00edtotta a virtu\u00e1lis mem\u00f3ria olvas\u00e1si \u00e9s \u00edr\u00e1si m\u0171veletekhez enged\u00e9lyezett hat\u00e1rt 34 GB-ra, m\u00edg a sandbox-be\u00e1ll\u00edt\u00e1sok 6 GB v\u00e9delmet ny\u00fajtanak az alapc\u00edmhez k\u00e9pest. Ennek k\u00f6vetkezm\u00e9nyek\u00e9nt a virtu\u00e1lis mem\u00f3ria 6 \u00e9s 34 GB k\u00f6z\u00f6tti tartom\u00e1nya az alapc\u00edmhez k\u00e9pest olvashat\u00f3 \u00e9s \u00edrhat\u00f3 volt a WebAssembly-alkalmaz\u00e1sok sz\u00e1m\u00e1ra. Ebben a mem\u00f3ri\u00e1ban m\u00e1s WebAssembly-k\u00f6rnyezetek vagy WebAssembly runtime \u00f6sszetev\u0151k is elhelyezkedhetnek. <\/p>\n

Ha a Wasmtime verzi\u00f3 friss\u00edt\u00e9se nem lehets\u00e9ges, akkor a hiba elker\u00fcl\u00e9s\u00e9re javasolt alternat\u00edvak\u00e9nt a «Config::static_memory_maximum_size(0)» opci\u00f3 megad\u00e1sa, ami k\u00f6telez\u0151 k\u00fcl\u00f6n hat\u00e1rellen\u0151rz\u00e9st aktiv\u00e1l minden line\u00e1ris mem\u00f3ria-hozz\u00e1f\u00e9r\u00e9skor (ez jelent\u0151s teljes\u00edtm\u00e9nycs\u00f6kken\u00e9st eredm\u00e9nyez). Egy m\u00e1sik lehet\u0151s\u00e9g a «Config::static_memory_guard_size(1 < 36)» be\u00e1ll\u00edt\u00e1s haszn\u00e1lata, ami megn\u00f6veli a probl\u00e9m\u00e1s virtu\u00e1lis mem\u00f3ria tartom\u00e1ny\u00e1ban elhelyezett \u0151rz\u0151lapok sz\u00e1m\u00e1t (Guard Page, amelynek el\u00e9r\u00e9sekor kiv\u00e9tel keletkezik), ami nagy mennyis\u00e9g\u0171 virtu\u00e1lis mem\u00f3ria lefoglal\u00e1s\u00e1t \u00e9s a p\u00e1rhuzamosan fut\u00f3 WebAssembly-alkalmaz\u00e1sok sz\u00e1m\u00e1nak korl\u00e1toz\u00e1s\u00e1t vonja maga ut\u00e1n.
\n
Forr\u00e1s: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0445 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f\u0445 Wasmtime 6.0.1, 5.0.1 \u0438 4.0.1 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2023-26489), \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043f\u0440\u0438\u0441\u0432\u043e\u0435\u043d \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u043e\u0432\u0430\u0442\u044c \u0437\u0430\u043f\u0438\u0441\u044c \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 \u043e\u0431\u043b\u0430\u0441\u0442\u044c \u043f\u0430\u043c\u044f\u0442\u0438 \u0432\u043d\u0435 \u0433\u0440\u0430\u043d\u0438\u0446\u044b, \u0434\u043e\u043f\u0443\u0441\u0442\u0438\u043c\u043e\u0439 \u0434\u043b\u044f \u0438\u0437\u043e\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e WebAssembly-\u043a\u043e\u0434\u0430, \u0447\u0442\u043e \u043f\u043e\u0442\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u043e \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0438\u043c \u0434\u043b\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0441\u0432\u043e\u0435\u0433\u043e \u043a\u043e\u0434\u0430 \u0432\u043d\u0435 \u0438\u0437\u043e\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u043e\u043a\u0440\u0443\u0436\u0435\u043d\u0438\u044f WASI. Wasmtime \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0441\u043e\u0431\u043e\u0439 runtime \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f WebAssembly-\u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u0441 \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u044f\u043c\u0438 WASI […]<\/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-107183","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\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\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Kritikus sebezhet\u0151s\u00e9g a Wasmtime-ban, a WebAssembly-alkalmaz\u00e1sok runtime-j\u00e1ban | ProHoster","description":"A Wasmtime 6.0.1, 5.0.1 \u00e9s 4.0.1 jav\u00edt\u00f3friss\u00edt\u00e9seiben egy CVE-2023-26489 azonos\u00edt\u00f3j\u00fa sebezhet\u0151s\u00e9get jav\u00edtottak, amelyet kritikus vesz\u00e9lyess\u00e9gi szinttel l\u00e1ttak el.","canonical_url":"https:\/\/prohoster.info\/hu\/blog\/news\/kriticheskaya-uyazvimost-v-wasmtime-runtime-dlya-webassembly-prilozhenij","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"hu_HU","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u041a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 Wasmtime, runtime \u0434\u043b\u044f WebAssembly-\u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 | ProHoster","og:description":"\u0412 \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0445 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f\u0445 Wasmtime 6.0.1, 5.0.1 \u0438 4.0.1 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2023-26489), \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043f\u0440\u0438\u0441\u0432\u043e\u0435\u043d \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438.","og:url":"https:\/\/prohoster.info\/hu\/blog\/news\/kriticheskaya-uyazvimost-v-wasmtime-runtime-dlya-webassembly-prilozhenij","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2023-03-10T16:48:11+00:00","article:modified_time":"2023-03-13T10:06:39+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":[],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts\/107183","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/comments?post=107183"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts\/107183\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/media?parent=107183"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/categories?post=107183"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/tags?post=107183"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}