Permissions, Privileges, and Access Controls in Mozilla Firefox - CVE-2019-11741
Published: September 3, 2019
Vulnerability identifier: #VU20825
CSH Severity: Medium
CVSS v4: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-11741
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform UXXS attacks.
The vulnerability exists due to insufficient isolation of addons.mozilla.org and accounts.firefox.com. A remote attacker can use another vulnerability to compromise a sandboxed process and use it to perform universal cross-site scripting attacks (UXXS). As a result, a remote attacker can modify a user's Firefox configuration.
Affected software
Mozilla Firefox
Arch Linux
firefox (Ubuntu package)
Arch Linux
firefox (Ubuntu package)
How to mitigate CVE-2019-11741
Install updates from vendor's website.
Mozilla Firefox - update to 69.0
firefox (Ubuntu package) - addressed in versions 69.0+build2-0ubuntu0.16.04.4, 69.0+build2-0ubuntu0.18.04.1, 69.0+build2-0ubuntu0.19.04.1, 69.0.2+build1-0ubuntu0.16.04.1, 69.0.2+build1-0ubuntu0.18.04.1, 69.0.2+build1-0ubuntu0.19.04.1
firefox (Ubuntu package) - addressed in versions 69.0+build2-0ubuntu0.16.04.4, 69.0+build2-0ubuntu0.18.04.1, 69.0+build2-0ubuntu0.19.04.1, 69.0.2+build1-0ubuntu0.16.04.1, 69.0.2+build1-0ubuntu0.18.04.1, 69.0.2+build1-0ubuntu0.19.04.1