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CVE-2021-4221

Published: 14 September 2022

If a domain name contained a RTL character, it would cause the domain to be rendered to the right of the path. This could lead to user confusion and spoofing attacks. <br>*This bug only affects Firefox for Android. Other operating systems are unaffected.*<br>*Note*: Due to a clerical error this advisory was not included in the original announcement, and was added in Feburary 2022. This vulnerability affects Firefox < 92.

Notes

AuthorNote
mdeslaur
starting with Ubuntu 22.04, the firefox package is just a script
that installs the Firefox snap
amurray
Only affects Firefox for Android
Priority

Medium

Status

Package Release Status
firefox
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(Firefox for Android only)
focal Not vulnerable
(Firefox for Android only)
jammy Not vulnerable
(Firefox for Android only)
kinetic Not vulnerable
(Firefox for Android only)
trusty Ignored
(out of standard support)
upstream Not vulnerable
(Firefox for Android only)
xenial Not vulnerable
(Firefox for Android only)