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CVE-2020-12404

Published: 9 July 2020

For native-to-JS bridging the app requires a unique token to be passed that ensures non-app code can't call the bridging functions. That token could leak when used for downloading files. This vulnerability affects Firefox for iOS < 26.

Notes

AuthorNote
alexmurray
This only affects Firefox for iOS, Firefox in Ubuntu is not affected by this vulnerability.
tyhicks
mozjs contains a copy of the SpiderMonkey JavaScript engine

Priority

Low

Cvss 3 Severity Score

4.3

Score breakdown

Status

Package Release Status
firefox
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(iOS only)
eoan Not vulnerable
(iOS only)
focal Not vulnerable
(iOS only)
trusty Does not exist

upstream Not vulnerable
(iOS only)
xenial Not vulnerable
(iOS only)
mozjs38
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(iOS only)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream Not vulnerable
(iOS only)
xenial Does not exist

mozjs52
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(iOS only)
eoan Not vulnerable
(iOS only)
focal Not vulnerable
(iOS only)
trusty Does not exist

upstream Not vulnerable
(iOS only)
xenial Does not exist

mozjs60
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Not vulnerable
(iOS only)
focal Does not exist

trusty Does not exist

upstream Not vulnerable
(iOS only)
xenial Does not exist

mozjs68
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal Not vulnerable
(iOS only)
trusty Does not exist

upstream Not vulnerable
(iOS only)
xenial Does not exist

thunderbird
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(iOS only)
eoan Not vulnerable
(iOS only)
focal Not vulnerable
(iOS only)
trusty Does not exist

upstream Not vulnerable
(iOS only)
xenial Not vulnerable
(iOS only)

Severity score breakdown

Parameter Value
Base score 4.3
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality Low
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N