A Mozilla está lançando o Firefox 86 para Linux, Windows, Android e macOS, confira as novidades.

Firefox

Mozilla Firefox é um navegador livre e multiplataforma desenvolvido pela Mozilla Foundation com ajuda de centenas de colaboradores. A intenção da fundação é desenvolver um navegador leve, seguro, intuitivo e altamente extensível. Wikipédia

Firefox 86

O anúncio foi feito hoje 23 de Fevereiro de 2021.

"Gostaríamos de estender um agradecimento especial a todos os novos Mozillians que contribuíram para este lançamento do Firefox.

Na Mozilla, acreditamos que você tem direito à privacidade. Você não deve ser rastreado online. Esteja você verificando seu saldo bancário, procurando o melhor médico ou comprando sapatos, empresas de rastreamento inescrupulosas não devem ser capazes de rastreá-lo enquanto você navega na web. Por esse motivo, estamos trabalhando continuamente para proteger o Firefox do rastreamento online de nossos usuários."

Novidades

Multiple Picture-in-Picture

O recurso agora vem habilitado por padrão.

Cookies

Proteção Total de Cookies no Modo Estrito. No Total Cookie Protection, cada site tem seu próprio “frasco de cookies”, evitando que os cookies sejam usados para rastreá-lo de site para site.

Suporte a AVIF

O suporte default a imagens .avif ainda não está habilitado por padrão como se esperava, mas assim como em versões anteriores pode ser habilitado facilmente em about:config.

Agora sim o suporte está ativo, você pode testar aqui.

Correções

O modo leitor agora funciona com páginas HTML locais.
Usar a navegação rápida do leitor de tela para mover para controles de texto editáveis não atinge mais incorretamente células não editáveis em algumas grades, como no messenger.com.
O recurso de revisão do mouse do leitor de tela Orca agora funciona corretamente após alternar as guias no Firefox.
Os leitores de tela não relatam mais cabeçalhos de coluna incorretamente em tabelas que contêm células que abrangem várias colunas.
Os links no Reader View agora têm mais contraste de cores.

A lista completa dos bugs corrigidos está no quadro abaixo.

Security Vulnerabilities fixed in Firefox 86 Announced February 23, 2021 Impact high Products Firefox Fixed in Firefox 86 #CVE-2021-23969: Content Security Policy violation report could have contained the destination of a redirect Reporter Masato Kinugawa Impact high Description As specified in the W3C Content Security Policy draft, when creating a violation report, "User agents need to ensure that the source file is the URL requested by the page, pre-redirects. If that’s not possible, user agents need to strip the URL down to an origin to avoid unintentional leakage." Under certain types of redirects, Firefox incorrectly set the source file to be the destination of the redirects. This was fixed to be the redirect destination's origin. References Bug 1542194 #CVE-2021-23970: Multithreaded WASM triggered assertions validating separation of script domains Reporter J. Ryan Stinnett Impact high Description Context-specific code was included in a shared jump table; resulting in assertions being triggered in multithreaded wasm code. References Bug 1681724 #CVE-2021-23968: Content Security Policy violation report could have contained the destination of a redirect Reporter Ademar Nowasky Junior Impact high Description If Content Security Policy blocked frame navigation, the full destination of a redirect served in the frame was reported in the violation report; as opposed to the original frame URI. This could be used to leak sensitive information contained in such URIs. References Bug 1687342 #CVE-2021-23974: noscript elements could have led to an HTML Sanitizer bypass Reporter Masato Kinugawa and Michał Bentkowski Impact moderate Description The DOMParser API did not properly process noscript elements for escaping. This could be used as an mXSS vector to bypass an HTML Sanitizer. References Bug 1528997, 1683627 #CVE-2021-23971: A website's Referrer-Policy could have been be overridden, potentially resulting in the full URL being sent as a Referrer Reporter Luca Moretto Impact moderate Description When processing a redirect with a conflicting Referrer-Policy, Firefox would have adopted the redirect's Referrer-Policy. This would have potentially resulted in more information than intended by the original origin being provided to the destination of the redirect. References Bug 1678545 #CVE-2021-23976: Local spoofing of web manifests for arbitrary pages in Firefox for Android Reporter Muneaki Nishimura Impact moderate Description When accepting a malicious intent from other installed apps, Firefox for Android accepted manifests from arbitrary file paths and allowed declaring webapp manifests for other origins. This could be used to gain fullscreen access for UI spoofing and could also lead to cross-origin attacks on targeted websites. Note: This issue is a different issue from CVE-2020-26954 and only affected Firefox for Android. Other operating systems are unaffected. References Bug 1684627 #CVE-2021-23977: Malicious application could read sensitive data from Firefox for Android's application directories Reporter fatal0 Impact moderate Description Firefox for Android suffered from a time-of-check-time-of-use vulnerability that allowed a malicious application to read sensitive data from application directories. Note: This issue is only affected Firefox for Android. Other operating systems are unaffected. References Bug 1684761 #CVE-2021-23972: HTTP Auth phishing warning was omitted when a redirect is cached Reporter Vijay Tikudave Impact low Description One phishing tactic on the web is to provide a link with HTTP Auth. For example https://www.phishingtarget.com@evil.com. To mitigate this type of attack, Firefox will display a warning dialog; however, this warning dialog would not have been displayed if evil.com used a redirect that was cached by the browser. References Bug 1683536 #CVE-2021-23975: about:memory’s Measure function caused an incorrect pointer operation Reporter Brian Carpenter of Geeknik Labs & Farm Impact low Description The developer page about:memory has a Measure function for exploring what object types the browser has allocated and their sizes. When this function was invoked; we incorrectly called the sizeof function, instead of using the API method that checks for invalid pointers. References Bug 1685145 #CVE-2021-23973: MediaError message property could have leaked information about cross-origin resources Reporter Andreas Pehrson Impact low Description When trying to load a cross-origin resource in an audio/video context a decoding error may have resulted, and the content of that error may have revealed information about the resource. References Bug 1690976 #CVE-2021-23978: Memory safety bugs fixed in Firefox 86 and Firefox ESR 78.8 Reporter Mozilla developers and community Impact high Description Mozilla developers Alexis Beingessner, Tyson Smith, Nika Layzell, and Mats Palmgren reported memory safety bugs present in Firefox 85 and Firefox ESR 78.7. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. References Memory safety bugs fixed in Firefox 86 and Firefox ESR 78.8 #CVE-2021-23979: Memory safety bugs fixed in Firefox 86 Reporter Mozilla developers and community Impact high Description Mozilla developers Tyson Smith, Lars T Hansen, Valentin Gosu, and Sebastian Hengst reported memory safety bugs present in Firefox 85. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. References Memory safety bugs fixed in Firefox 86

Instalação

o aconselhavel é que você aguarde a versão 68 chegar em seus repositórios, mas cao queira testar agora mesmo, faça o download do seu idioma, descompacte e execute o arquivo "Firefox".

Download Firefox 86 PT-BR

Download Firefox 86 PT-PT

Download Firefox 86 EN-US

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