Resource management error in Mozilla Firefox - CVE-2020-26963
Published: November 17, 2020
Vulnerability identifier: #VU48468
CSH Severity: Low
CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-26963
CWE-ID: CWE-399
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper management of internal resources. Repeated calls to the history and location interfaces could have been
used to hang the browser.
Affected software
Mozilla Firefox
Arch Linux
Ubuntu
firefox (Alpine package)
firefox (Ubuntu package)
Firefox for Android
Arch Linux
Ubuntu
firefox (Alpine package)
firefox (Ubuntu package)
Firefox for Android
How to mitigate CVE-2020-26963
Install updates from vendor's website.
Mozilla Firefox - update to 83.0
Firefox for Android - update to 83.0.0
firefox (Ubuntu package) - addressed in versions 83.0+build2-0ubuntu0.16.04.3, 83.0+build2-0ubuntu0.18.04.2, 83.0+build2-0ubuntu0.20.04.1, 83.0+build2-0ubuntu0.20.10.1
Firefox for Android - update to 83.0.0
firefox (Ubuntu package) - addressed in versions 83.0+build2-0ubuntu0.16.04.3, 83.0+build2-0ubuntu0.18.04.2, 83.0+build2-0ubuntu0.20.04.1, 83.0+build2-0ubuntu0.20.10.1