WebExtensions with the appropriate permissions can attach content scripts to Mozilla sites such as accounts.firefox.com and listen to network traffic to the site through the "webRequest" API. For example, this allows for the interception of username and an encrypted password during login to Firefox Accounts. This issue does not expose synchronization traffic directly and is limited to the process of user login to the website and the data displayed to the user once logged in. This vulnerability affects Firefox < 60.
CVSS Details
- CVSS 3.1 Base Score: 6.5
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Jun 11, 2018 |
| Freebsd | — | Upgrade linux-thunderbirdUpgrade libxulUpgrade firefoxUpgrade linux-firefoxUpgrade seamonkeyUpgrade firefox-esrUpgrade waterfoxUpgrade thunderbirdUpgrade linux-seamonkey | May 10, 2018 | May 9, 2018 |
| Mfsa2018 11 | — | Upgrade to Mozilla Firefox version 60.0Upgrade to the latest version of Mozilla Firefox | May 10, 2018 | May 9, 2018 |
| Suse | — | Upgrade MozillaFirefox-translations-otherUpgrade MozillaFirefoxUpgrade MozillaFirefox-develUpgrade MozillaFirefox-translations-common | May 20, 2018 | May 9, 2018 |
| Ubuntu | — | Upgrade firefox | May 22, 2018 | May 9, 2018 |
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