Buffer overflow in Mozilla Firefox - CVE-2020-12411
Published: June 2, 2020 / Updated: July 15, 2020
Vulnerability identifier: #VU28528
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-12411
CWE-ID: CWE-119
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 boundary error when processing HTML content. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Mozilla Firefox
Arch Linux
Gentoo Linux
firefox (Alpine package)
Arch Linux
Gentoo Linux
firefox (Alpine package)
How to mitigate CVE-2020-12411
Install updates from vendor's website.
Mozilla Firefox - update to 77.0
firefox (Alpine package) - update to 77.0-r0
firefox (Alpine package) - update to 77.0-r0