Type Confusion in Mozilla Firefox - CVE-2019-11750
Published: September 3, 2019
Vulnerability identifier: #VU20830
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-11750
CWE-ID: CWE-843
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a type confusion error in Spidermonkey. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger a type confusion error and crash the affected application.
Affected software
Mozilla Firefox
Firefox ESR
Arch Linux
Red Hat Enterprise Linux for x86_64
firefox (Ubuntu package)
Firefox ESR
Arch Linux
Red Hat Enterprise Linux for x86_64
firefox (Ubuntu package)
How to mitigate CVE-2019-11750
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 ESR - update to 68.1.0
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 ESR - update to 68.1.0