firefox: After requesting multiple permissions, and closing the first permission panel, subsequent permission panels will be d...
CVE-2021-29987 is fixed in 9 products on 1 platform, first by firefox 91.0+build2-0ubuntu0.18.04.1, released August 10, 2021. It is not reported as exploited. Patch Radar priority: Routine.
After requesting multiple permissions, and closing the first permission panel, subsequent permission panels will be displayed in a different position but still record a click in the default location, making it possible to trick a user into accepting a permission they did not want to. *This bug only affects Firefox on Linux. Other operating systems are unaffected.*. This vulnerability affects Firefox < 91 and Thunderbird < 91.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| firefox · Ubuntu 18.04.6 LTS (bionic) | 91.0+build2-0ubuntu0.18.04.1 | firefox 91.0+build2-0ubuntu0.18.04.1 | Aug 10, 2021 |
| firefox · Ubuntu 20.04 LTS (focal) | 91.0+build2-0ubuntu0.20.04.1 | firefox 91.0+build2-0ubuntu0.20.04.1 | Aug 10, 2021 |
| firefox-geckodriver · Ubuntu 18.04.6 LTS (bionic) | 91.0+build2-0ubuntu0.18.04.1 | firefox-geckodriver 91.0+build2-0ubuntu0.18.04.1 | Aug 10, 2021 |
| firefox-geckodriver · Ubuntu 20.04 LTS (focal) | 91.0+build2-0ubuntu0.20.04.1 | firefox-geckodriver 91.0+build2-0ubuntu0.20.04.1 | Aug 10, 2021 |
| firefox-mozsymbols · Ubuntu 18.04.6 LTS (bionic) | 91.0+build2-0ubuntu0.18.04.1 | firefox-mozsymbols 91.0+build2-0ubuntu0.18.04.1 | Aug 10, 2021 |
| firefox-mozsymbols · Ubuntu 20.04 LTS (focal) | 91.0+build2-0ubuntu0.20.04.1 | firefox-mozsymbols 91.0+build2-0ubuntu0.20.04.1 | Aug 10, 2021 |
| thunderbird · Ubuntu 18.04.6 LTS (bionic) | 1:91.5.0+build1-0ubuntu0.18.04.1 | thunderbird 1:91.5.0+build1-0ubuntu0.18.04.1 | Feb 16, 2023 |
| thunderbird · Ubuntu 20.04 LTS (focal) | 1:91.5.0+build1-0ubuntu0.20.04.1 | thunderbird 1:91.5.0+build1-0ubuntu0.20.04.1 | Feb 16, 2023 |
| thunderbird-gnome-support · Ubuntu 18.04.6 LTS (bionic) | 1:91.5.0+build1-0ubuntu0.18.04.1 | thunderbird-gnome-support 1:91.5.0+build1-0ubuntu0.18.04.1 | Feb 16, 2023 |
| thunderbird-gnome-support · Ubuntu 20.04 LTS (focal) | 1:91.5.0+build1-0ubuntu0.20.04.1 | thunderbird-gnome-support 1:91.5.0+build1-0ubuntu0.20.04.1 | Feb 16, 2023 |
| thunderbird-mozsymbols · Ubuntu 18.04.6 LTS (bionic) | 1:91.5.0+build1-0ubuntu0.18.04.1 | thunderbird-mozsymbols 1:91.5.0+build1-0ubuntu0.18.04.1 | Feb 16, 2023 |
| thunderbird-mozsymbols · Ubuntu 20.04 LTS (focal) | 1:91.5.0+build1-0ubuntu0.20.04.1 | thunderbird-mozsymbols 1:91.5.0+build1-0ubuntu0.20.04.1 | Feb 16, 2023 |
| xul-ext-calendar-timezones · Ubuntu 18.04.6 LTS (bionic) | 1:91.5.0+build1-0ubuntu0.18.04.1 | xul-ext-calendar-timezones 1:91.5.0+build1-0ubuntu0.18.04.1 | Feb 16, 2023 |
| xul-ext-calendar-timezones · Ubuntu 20.04 LTS (focal) | 1:91.5.0+build1-0ubuntu0.20.04.1 | xul-ext-calendar-timezones 1:91.5.0+build1-0ubuntu0.20.04.1 | Feb 16, 2023 |
| xul-ext-gdata-provider · Ubuntu 18.04.6 LTS (bionic) | 1:91.5.0+build1-0ubuntu0.18.04.1 | xul-ext-gdata-provider 1:91.5.0+build1-0ubuntu0.18.04.1 | Feb 16, 2023 |
| xul-ext-gdata-provider · Ubuntu 20.04 LTS (focal) | 1:91.5.0+build1-0ubuntu0.20.04.1 | xul-ext-gdata-provider 1:91.5.0+build1-0ubuntu0.20.04.1 | Feb 16, 2023 |
| xul-ext-lightning · Ubuntu 18.04.6 LTS (bionic) | 1:91.5.0+build1-0ubuntu0.18.04.1 | xul-ext-lightning 1:91.5.0+build1-0ubuntu0.18.04.1 | Feb 16, 2023 |
| xul-ext-lightning · Ubuntu 20.04 LTS (focal) | 1:91.5.0+build1-0ubuntu0.20.04.1 | xul-ext-lightning 1:91.5.0+build1-0ubuntu0.20.04.1 | Feb 16, 2023 |
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