Firefox 104 est disponible en téléchargement, quoi de neuf ?

Mozilla déploie une nouvelle mise à jour pour Firefox. Le navigateur évolue en version 104 et se décline en plusieurs éditions (macOS, Windows, Linux)

Firefox 104 s’accompagne de nombreuses améliorations dont la prise en charge des sous-titres si Disney + est regardé en mode Picture-in-Picture. Nous avons aussi des informations sur la consommation d’énergie pour chaque site Web visité à partir d’un appareil exploitant un processeur Apple M1 et des ordinateurs Windows 11.

Mozilla ajoute des améliorations du coté défilement tandis que le navigateur réduit son empreinte sur les performances du système lorsqu’il est minimisé. Ainsi il est souligné

« Firefox prend désormais en charge à la fois la propriété scroll-snap-stop ainsi que le ré-snapping. Vous pouvez utiliser les valeurs always et normal de la propriété scroll-snap-stop pour spécifier s’il faut ou non passer les points d’alignement, même en cas de défilement rapide. Le réenclenchement tente de conserver la dernière position d’accrochage après tout changement de contenu/de mise en page. L’interface utilisateur de Firefox elle-même sera désormais limitée pour les performances et l’utilisation de la batterie lorsqu’elle sera minimisée ou obstruée, de la même manière que les onglets d’arrière-plan. »

Nous avons également plusieurs correctifs dont certains concernent la sécurité. En clair nous avons le colmatage de certaines failles de sécurité dont voici la liste exacte.

CVE-2022-38472,
CVE-2022-38473,
CVE-2022-38474,
CVE-2022-38475,
CVE-2022-38477,
CVE-2022-38478.

Du coté des bugs, Mozilla a corrigé par exemple

Un souci de surbrillance après avoir tapé Entrée dans la messagerie de Yahoo Mail et Outlook et Un bug de retour arrière avec le protocole http.
Firefox 104 est disponible en téléchargement direct ou au travers de son module de mise à jour intégré.

Firefox 104, note de version

Subtitles are now available for Disney+ in Picture-in-Picture.
Firefox now supports both the scroll-snap-stop property as well as re-snapping. You can use the scroll-snap-stop property’s always and normal values to specify whether or not to pass the snap points, even when scrolling fast. Re-snapping tries to keep the last snap position after any content/layout changes.
The Firefox profiler can analyze power usage of a website (Apple M1 and Windows 11 only).
The Firefox UI itself will now be throttled for performance and battery usage when minimized or occluded, in the same way background tabs are.

Highlight color is preserved correctly after typing Enter in the mail composer of Yahoo Mail and Outlook.
After bypassing the https only error page navigating back would take you to the error page that was previously dismissed. Back now takes you to the previous site that was visited.
Paste unformatted shortcut (shift+ctrl/cmd+v) now works in plain text contexts, such as input and text area.
Various security fixes.

Security Vulnerabilities fixed in Firefox 104

Announced

August 23, 2022

Impact

high

Products

Firefox

Fixed in

Firefox 104

#CVE-2022-38472: Address bar spoofing via XSLT error handling

Reporter: Armin Ebert
Impact: high

Description

An attacker could have abused XSLT error handling to associate attacker-controlled content with another origin which was displayed in the address bar. This could have been used to fool the user into submitting data intended for the spoofed origin.

References

Bug 1769155

#CVE-2022-38473: Cross-origin XSLT Documents would have inherited the parent’s permissions

Reporter: Armin Ebert
Impact: high

Description

A cross-origin iframe referencing an XSLT document would inherit the parent domain’s permissions (such as microphone or camera access).

References

Bug 1771685

#CVE-2022-38474: Recording notification not shown when microphone was recording on Android

Reporter: Agi Sferro
Impact: low

Description

A website that had permission to access the microphone could record audio without the audio notification being shown. This bug does not allow the attacker to bypass the permission prompt – it only affects the notification shown once permission has been granted.
This bug only affects Firefox for Android. Other operating systems are unaffected.

References

Bug 1719511

#CVE-2022-38475: Attacker could write a value to a zero-length array

Reporter: Christian Holler
Impact: low

Description

An attacker could have written a value to the first element in a zero-length JavaScript array. Although the array was zero-length, the value was not written to an invalid memory address.

References

Bug 1773266

#CVE-2022-38477: Memory safety bugs fixed in Firefox 104 and Firefox ESR 102.2

Reporter: Mozilla developers and community
Impact: high

Description

Mozilla developer Nika Layzell and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 103 and Firefox ESR 102.1. 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 104 and Firefox ESR 102.2

#CVE-2022-38478: Memory safety bugs fixed in Firefox 104, Firefox ESR 102.2, and Firefox ESR 91.13

Reporter: Mozilla developers and community
Impact: high

Description

Members the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 103, Firefox ESR 102.1, and Firefox ESR 91.12. 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.