{"id":116387,"date":"2024-06-06T15:39:51","date_gmt":"2024-06-06T13:39:51","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-etalonnyh-realizacziyah-kodekov-av1-i-vp8-vp9"},"modified":"2024-06-06T15:39:51","modified_gmt":"2024-06-06T13:39:51","slug":"uyazvimost-v-etalonnyh-realizacziyah-kodekov-av1-i-vp8-vp9","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/uyazvimost-v-etalonnyh-realizacziyah-kodekov-av1-i-vp8-vp9","title":{"rendered":"Haavatavus AV1 ja VP8\/VP9 koodekite standardrakendustes","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Open Media (AOMedia) liidul libaom, mis pakub standardset rakendust video kodeerimise formaadi AV1 jaoks, on tuvastatud kriitiline haavatavus (CVE-2024-5171), mis viib t\u00e4isarvude \u00fclet\u00e4itumiseni ja m\u00e4lu piire \u00fcletavasse kirjutamisse, kui t\u00f6\u00f6deldakse liiga suuri v\u00e4\u00e4rtusi m\u00f5nedes parameetrites. Sarnane haavatavus (CVE-2024-5197) on tuvastatud ka libvpx raamatukogus, mis rakendab koodekeid VP8 ja VP9. Probleemid on lahendatud uuendustes libaom 3.9.0 ja libvpx 1.14.1. Jaotustes j\u00e4\u00e4vad haavatavused siiski parandamata (Debian, Ubuntu, RHEL, SUSE\/openSUSE, Fedora, Arch, FreeBSD). <\/p>\n

Libaom haavatavustele on antud k\u00f5rgeim ohtu tase (10 skaalal 10), mis t\u00e4hendab, et neid saab kasutada rakendustes, mis kasutavad seda raamatukogu, l\u00e4bivaatamisel spetsiaalselt vormindatud sisu t\u00f6\u00f6tlemiseks. Libvpx ohtutase on m\u00e4\u00e4ratud 5.9-st 10, mis n\u00e4itab piiratud ekspluateerimise v\u00f5imalusi. Libaom ja libvpx haavatavuste peamine oht tuleneb asjaolust, et neid raamatukogusid kasutatakse veebibrauserites, meediam\u00e4ngijates ja teenustes, mis tegelevad video kodeerimisega. <\/p>\n

Haavatavus ilmneb libaom-i funktsioonide aom_img_alloc(), aom_img_wrap() v\u00f5i om_img_alloc_with_border() kutsumise k\u00e4igus suurte d_w, d_h ja align parameetrite v\u00e4\u00e4rtustega, mis toovad kaasa t\u00e4isarvu \u00fclevoolu nihke ja m\u00e4lupuhvrite suuruste arvutamisel. Sarnane \u00fclevool toimub funktsioonides vpx_img_alloc() ja vpx_img_wrap(). Nimetatud funktsioone kasutatakse video kodeerimisel. <\/p>\n

K\u00f5ige suurem oht haavatavusest tuleneb potentsiaalsest r\u00fcnnakuv\u00f5imalusest brauseritele, kus varasemad sarnased haavatavused v\u00f5isid olla \u00e4ra kasutatud spetsiaalselt kujundatud lehtede avamise kaudu, mis kutsub esile JavaScripti funktsioone video kodeerimiseks, v\u00f5i WebRTC manipuleerimise kaudu. Google'i esindajate s\u00f5nul ei m\u00f5juta haavatavus Chromiumi mootorit, kuna funktsioonidesse aom_img_alloc(), aom_img_wrap(), vpx_img_alloc() ja vpx_img_wrap() edastati ainult kontrollitud d_w ja d_h argumentide v\u00e4\u00e4rtused. Firefoxi AV1 dekodeerimiseks kasutatakse raamatukogu dav1d, kuid kodeerimiseks kasutatakse libaom'i. Kas Firefox on probleemile vastuv\u00f5tlik, pole veel selge, kuna teave selle kohta, kuidas haavatavus konkreetseid tooteid m\u00f5jutab, ei ole seni avaldatud.
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u043e\u0439 \u0430\u043b\u044c\u044f\u043d\u0441\u043e\u043c Open Media (AOMedia) \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0435 libaom, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0435\u0439 \u044d\u0442\u0430\u043b\u043e\u043d\u043d\u0443\u044e \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u0444\u043e\u0440\u043c\u0430\u0442\u0430 \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0432\u0438\u0434\u0435\u043e AV1, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2024-5171), \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0430\u044f \u043a \u0446\u0435\u043b\u043e\u0447\u0438\u0441\u043b\u0435\u043d\u043d\u043e\u043c\u0443 \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044e \u0438 \u0437\u0430\u043f\u0438\u0441\u0438 \u0432 \u043e\u0431\u043b\u0430\u0441\u0442\u044c \u0432\u043d\u0435 \u0433\u0440\u0430\u043d\u0438\u0446 \u0431\u0443\u0444\u0435\u0440\u0430 \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u0441\u043b\u0438\u0448\u043a\u043e\u043c \u0431\u043e\u043b\u044c\u0448\u0438\u0445 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439 \u0432 \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0430\u0445. \u0410\u043d\u0430\u043b\u043e\u0433\u0438\u0447\u043d\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2024-5197) \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0432 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0435 libvpx \u0441 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u043a\u043e\u0434\u0435\u043a\u043e\u0432 VP8 \u0438 VP9. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u044b \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0432 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f\u0445 […]<\/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-116387","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\udd47Haavatavus AV1 ja VP8\/VP9 referentsrakendustes | ProHoster","description":"Arenenud Open Media (AOMedia) liidu raamatukogus libaom, mis pakub AV1 video kodeerimise formaadi referentsrakendust, tuvastati kriitiline haavatavus (CVE-2024-5171), mis viib t\u00e4isarvu \u00fclevooluni ja m\u00e4lu aladele kirjutamiseni, kui teatud parameetrites k\u00e4sitletakse liiga suuri v\u00e4\u00e4rtusi. Sarnane haavatavus (CVE-2024-5197) tuvastati libvpx raamatukogus, mis teostab VP8 ja VP9 koodekeid. Probleemid on lahendatud uuendustes.","canonical_url":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/uyazvimost-v-etalonnyh-realizacziyah-kodekov-av1-i-vp8-vp9","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"et_EE","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\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 \u044d\u0442\u0430\u043b\u043e\u043d\u043d\u044b\u0445 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f\u0445 \u043a\u043e\u0434\u0435\u043a\u043e\u0432 AV1 \u0438 VP8\/VP9 | ProHoster","og:description":"\u0412 \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u043e\u0439 \u0430\u043b\u044c\u044f\u043d\u0441\u043e\u043c Open Media (AOMedia) \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0435 libaom, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0435\u0439 \u044d\u0442\u0430\u043b\u043e\u043d\u043d\u0443\u044e \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u0444\u043e\u0440\u043c\u0430\u0442\u0430 \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0432\u0438\u0434\u0435\u043e AV1, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2024-5171), \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0430\u044f \u043a \u0446\u0435\u043b\u043e\u0447\u0438\u0441\u043b\u0435\u043d\u043d\u043e\u043c\u0443 \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044e \u0438 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\u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0432 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