For windows, GNU / Linux and MacOS platforms, Mozilla today released a stable version update for Firefox 80. As expected, this is a very important browser version update, which introduces many optimizations and security fixes, and is recommended for users to upgrade.
The first is the new feature that users expect most: starting with Firefox 80, users can use Firefox as the default PDF reader in the system. That is, starting with Firefox 80, the browser can also be configured as the system's default PDF reader, which means that every PDF document will be opened in Firefox.
There are no less than ten security patches in Firefox 80, as follows:
● cve-2020-15663: a downgrade attack on Mozilla maintenance service may result in privilege escalation (high severity level).
● CVE-2020-15664。 Attacker induced extension install prompt (high severity)
● CVE-2020-15670。 Fix memory security vulnerability (high severity) in Firefox 80 and Firefox ESR 78.2
Cve-2020-12401: timing attack on ECDSA signature generation (moderate severity)
Cve-2020-6829: p-384 and p-521 are vulnerable to electromagnetic channel attack (moderate severity) when generating signatures
Cve-2020-12400: p-384 and p-521 are vulnerable to modular inversion side channel attacks (moderate severity).
● CVE-2020-15665。 After the before unload dialog box is displayed, the address bar does not reset (moderate severity) when you choose to stay on the page.
● CVE-2020-15666。 The mediaerror message property exposes the cross source response state (low severity level).
● cve-2020-15667: heap overflow when processing update files (low severity level)
● CVE-2020-15668。 Data race when reading certificate information (low severity)
All kinds ofSafety repair
● fixed several crashes when using screen readers, including those that are often encountered when using jaws screen readers
● screen reader users can benefit from an important fix to the Firefox developer tool
● SVG title and desc elements (labels and descriptions) can now be correctly displayed on assistive technology products (such as screen readers)
Updates for developers:
An experimental one is provided in the browser developer's version of the browserSidebar panelTo help developers identify potential browser compatibility issues more quickly based on MDN data
● Firefox now supports RTX and transport CC to improve call quality and provide better bandwidth estimation under harsh network conditions. These features also provide better compatibility for many web sites that use webrtc