With the new browser version Firefox 101, Mozilla eliminates 13 vulnerabilities. Additionally, security updates are also available for Firefox ESR and Thunderbird.
Mozilla has released Firefox 101.0 and Firefox ESR 91.10.0. The developers mainly fixed security vulnerabilities and other bugs. Firefox can now ask before downloading how to proceed with the file (open or save). Any number of microphones can now be used for web conferences in order to be able to switch between them.
The Firefox Security Advisory lists 13 fixed security vulnerabilities, of which Mozilla classifies at least eight as high risk.
Four more vulnerabilities are classified as medium risk. Mozilla only lists vulnerabilities found internally in summary form, without specifying their number. According to Mozilla, some of these could potentially be exploited to inject and execute code. Attacks on Firefox vulnerabilities are currently not known.
The Firefox ESR 91.10.0 update fixes at least eight vulnerabilities, almost all of which are considered high risk. These are essentially the same vulnerabilities fixed in Firefox 101. An updated Tor Browser based on Firefox ESR 91.10.0 is not yet available.
The new Thunderbird version 91.10.0 fixes nine vulnerabilities, mainly those inherited from Firefox's mail program. Firefox code is used for HTML processing, among other things. There are also some bug fixes.
If you have already installed Firefox, it is best to use the update function integrated in Firefox. This will automatically provide you with the update Firefox 101.0 as soon as it is available for your Firefox.
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