Na biblioteca libaom, desenvolvida pela alian\u00e7a Open Media (AOMedia), que fornece uma implementa\u00e7\u00e3o de refer\u00eancia do formato de codifica\u00e7\u00e3o de v\u00eddeo AV1, foi identificada uma vulnerabilidade cr\u00edtica (CVE-2024-5171) que leva a um estouro de inteiro e grava\u00e7\u00e3o fora dos limites do buffer ao processar valores excessivamente grandes em alguns par\u00e2metros. Uma vulnerabilidade semelhante (CVE-2024-5197) foi descoberta na biblioteca libvpx, que implementa os codecs VP8 e VP9. Os problemas foram corrigidos nas atualiza\u00e7\u00f5es libaom 3.9.0 e libvpx 1.14.1. Nos distribui\u00e7\u00f5es as vulnerabilidades ainda permanecem sem corre\u00e7\u00e3o (Debian, Ubuntu, RHEL, SUSE\/openSUSE, Fedora, Arch, FreeBSD). <\/p>\n
A vulnerabilidade na libaom foi classificada com o n\u00edvel m\u00e1ximo de gravidade (10 de 10), sugerindo a possibilidade de explora\u00e7\u00e3o ao processar conte\u00fado especificamente formatado em aplica\u00e7\u00f5es que utilizam essa biblioteca. Para a libvpx, o n\u00edvel de gravidade foi definido em 5.9 de 10, o que corresponde a condi\u00e7\u00f5es de explora\u00e7\u00e3o limitadas. O principal risco das vulnerabilidades na libaom e libvpx \u00e9 que essas bibliotecas s\u00e3o utilizadas em navegadores da web, reprodutores de m\u00eddia e servi\u00e7os que realizam a transcodifica\u00e7\u00e3o de v\u00eddeo. <\/p>\n
A vulnerabilidade ocorre na libaom ao chamar as fun\u00e7\u00f5es aom_img_alloc(), aom_img_wrap() ou om_img_alloc_with_border() com valores elevados nos par\u00e2metros d_w, d_h e align, que levam a um estouro de inteiro ao calcular deslocamentos e tamanhos de buffers. Um estouro semelhante ocorre nas fun\u00e7\u00f5es vpx_img_alloc() e vpx_img_wrap(). Essas fun\u00e7\u00f5es s\u00e3o utilizadas na codifica\u00e7\u00e3o de v\u00eddeo. <\/p>\n
A maior amea\u00e7a da vulnerabilidade \u00e9 a potencial possibilidade de ataques a navegadores, onde vulnerabilidades semelhantes no passado puderam ser exploradas ao abrir uma p\u00e1gina especificamente formatada que chama fun\u00e7\u00f5es JavaScript para codifica\u00e7\u00e3o de v\u00eddeo no navegador, ou atrav\u00e9s de manipula\u00e7\u00f5es com WebRTC. Segundo representantes do Google, a vulnerabilidade n\u00e3o afeta o motor Chromium, pois nas fun\u00e7\u00f5es aom_img_alloc(), aom_img_wrap(), vpx_img_alloc() e vpx_img_wrap() somente foram passados valores verificados para os argumentos d_w e d_h. No Firefox, a biblioteca dav1d \u00e9 usada para decodifica\u00e7\u00e3o de AV1, mas a libaom \u00e9 utilizada para codifica\u00e7\u00e3o. Se o Firefox \u00e9 vulner\u00e1vel ao problema ainda n\u00e3o est\u00e1 claro, j\u00e1 que informa\u00e7\u00f5es sobre como a vulnerabilidade afeta produtos espec\u00edficos ainda n\u00e3o foram publicadas. \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\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\udd47Vulnerabilidade nas implementa\u00e7\u00f5es de refer\u00eancia dos codecs AV1 e VP8\/VP9 | ProHoster","description":"Uma vulnerabilidade cr\u00edtica (CVE-2024-5171) foi identificada na biblioteca libaom, desenvolvida pela Open Media (AOMedia), que fornece uma implementa\u00e7\u00e3o de refer\u00eancia do formato de codifica\u00e7\u00e3o de v\u00eddeo AV1, levando a uma falha de tipo inteiro.","canonical_url":"https:\/\/prohoster.info\/pt\/blog\/news\/uyazvimost-v-etalonnyh-realizacziyah-kodekov-av1-i-vp8-vp9","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"pt_PT","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.","og:url":"https:\/\/prohoster.info\/pt\/blog\/news\/uyazvimost-v-etalonnyh-realizacziyah-kodekov-av1-i-vp8-vp9","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":"2024-06-06T13:39:51+00:00","article:modified_time":"2024-06-06T13:39:51+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"116387","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":"2026-01-23 01:52:19","breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2026-01-23 01:52:19","updated":"2026-01-23 01:52:19","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/posts\/116387","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/comments?post=116387"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/posts\/116387\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/media?parent=116387"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/categories?post=116387"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/tags?post=116387"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n
Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"