{"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\/ro\/blog\/news\/uyazvimost-v-etalonnyh-realizacziyah-kodekov-av1-i-vp8-vp9","title":{"rendered":"Vulnerabilitate \u00een implement\u0103rile de referin\u021b\u0103 ale codecurilor AV1 \u0219i VP8\/VP9","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\u00cen biblioteca libaom, dezvoltat\u0103 de alian\u021ba Open Media (AOMedia), care ofer\u0103 o implementare de referin\u021b\u0103 a formatului de codare video AV1, a fost identificat\u0103 o vulnerabilitate critic\u0103 (CVE-2024-5171), care duce la o dep\u0103\u0219ire a limitei \u00eentregului \u0219i la scrierea \u00een afara grani\u021belor bufferului atunci c\u00e2nd se proceseaz\u0103 valori prea mari \u00een anumite parametri. O vulnerabilitate similar\u0103 (CVE-2024-5197) a fost identificat\u0103 \u00een biblioteca libvpx, care implementeaz\u0103 codecurile VP8 \u0219i VP9. Problemele sunt remediate \u00een actualiz\u0103rile libaom 3.9.0 \u0219i libvpx 1.14.1. \u00cen distribu\u021biile afectate, vulnerabilit\u0103\u021bile r\u0103m\u00e2n necorectate (Debian, Ubuntu, RHEL, SUSE\/openSUSE, Fedora, Arch, FreeBSD). <\/p>\n

Vulnerabilit\u0103\u021bile din libaom au fost clasificate cu cel mai mare nivel de severitate (10 din 10), ceea ce implic\u0103 posibilitatea exploat\u0103rii acestora \u00een aplica\u021biile care folosesc aceast\u0103 bibliotec\u0103, cu con\u021binut special conceput. \u00cen libvpx, nivelul de severitate este clasificat la 5.9 din 10, corespunz\u00e2nd condi\u021biilor limitate de exploatare. Pericolul principal al vulnerabilit\u0103\u021bilor din libaom \u0219i libvpx este faptul c\u0103 aceste biblioteci sunt utilizate \u00een browsere web, playere media \u0219i servicii care reencodeaz\u0103 video. <\/p>\n

Vulnerabilitatea se manifest\u0103 \u00een libaom atunci c\u00e2nd sunt apelate func\u021biile aom_img_alloc(), aom_img_wrap() sau aom_img_alloc_with_border() cu valori mari \u00een parametrii d_w, d_h \u0219i align, care duc la o dep\u0103\u0219ire a limitei \u00eentregului \u00een calculul offseturilor \u0219i dimensiunilor bufferelor. O dep\u0103\u0219ire similar\u0103 apare \u00een func\u021biile vpx_img_alloc() \u0219i vpx_img_wrap(). Aceste func\u021bii sunt folosite \u00een codificarea video. <\/p>\n

Cea mai mare periculozitate a vulnerabilit\u0103\u021bii este poten\u021bialul de atac asupra browserelor, \u00een care vulnerabilit\u0103\u021bi similare din trecut au putut fi exploatate prin deschiderea unei pagini special concepute \u00een browser care invoc\u0103 func\u021bii JavaScript pentru codificarea video sau prin manipularea WebRTC. Reprezentan\u021bii Google au declarat c\u0103 vulnerabilitatea nu afecteaz\u0103 motorul Chromium, deoarece \u00een func\u021biile aom_img_alloc(), aom_img_wrap(), vpx_img_alloc() \u0219i vpx_img_wrap() au fost transmise doar valori verificate pentru argumentele d_w \u0219i d_h. \u00cen Firefox, pentru decodarea AV1 este utilizat\u0103 biblioteca dav1d, dar pentru codificare se folose\u0219te libaom. Dac\u0103 Firefox este afectat de problem\u0103 r\u0103m\u00e2ne neclar, deoarece informa\u021biile despre cum afecteaz\u0103 vulnerabilitatea produsele specifice nu au fost publicate p\u00e2n\u0103 \u00een prezent.
\n
Sursa: opennet.ro<\/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-news"],"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\udd47Vulnerabilitate \u00een implement\u0103rile de referin\u021b\u0103 ale codec-urilor AV1 \u0219i VP8\/VP9 | ProHoster","description":"\u00cen biblioteca libaom dezvoltat\u0103 de alian\u021ba Open Media (AOMedia), care ofer\u0103 o implementare de referin\u021b\u0103 a formatului de codare video AV1, a fost descoperit\u0103 o vulnerabilitate critic\u0103 (CVE-2024-5171) care duce la o eroare de tip integer.","canonical_url":"https:\/\/prohoster.info\/ro\/blog\/news\/uyazvimost-v-etalonnyh-realizacziyah-kodekov-av1-i-vp8-vp9","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"ro_RO","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 | 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