The Firefox updater created a directory writable by non-privileged users. When uninstalling Firefox, any files in that directory would be recursively deleted with the permissions of the uninstalling user account. This could be combined with creation of a junction (a form of symbolic link) to allow arbitrary file deletion controlled by the non-privileged user. *This bug only affects Firefox on Windows. Other operating systems are unaffected.* This vulnerability affects Firefox < 116, Firefox ESR < 115.1, and Thunderbird < 115.1.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade firefoxUpgrade firefox-esr | Aug 22, 2024 | Aug 1, 2023 |
| Gentoo Linux | — | Upgrade mail-client/thunderbird-bin.Upgrade mail-client/thunderbird. | Feb 21, 2024 | Aug 1, 2023 |
| Mfsa2023 29 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 116.0 | Aug 2, 2023 | Aug 1, 2023 |
| Mfsa2023 31 | — | Upgrade to Mozilla Firefox ESR version 115.1Upgrade to the latest version of Mozilla Firefox | Aug 2, 2023 | Aug 1, 2023 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 115.1 | Aug 3, 2023 | Aug 1, 2023 |
| Suse | — | Upgrade MozillaThunderbirdUpgrade mozillafirefox-branding-upstreamUpgrade MozillaFirefox-translations-commonUpgrade MozillaFirefox-develUpgrade MozillaThunderbird-translations-otherUpgrade MozillaFirefox-translations-otherUpgrade MozillaFirefoxUpgrade MozillaThunderbird-translations-common | Aug 3, 2023 | Aug 1, 2023 |
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