USN-4383-1: Firefox vulnerabilities
firefox vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
- Ubuntu 19.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
Summary
Firefox could be made to crash or run programs as your login if it
opened a malicious website.
Software Description
- firefox – Mozilla Open Source web browser
Details
Multiple security issues were discovered in Firefox. If a user were
tricked in to opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, spoof the
addressbar, or execute arbitrary code. (CVE-2020-12405, CVE-2020-12406,
CVE-2020-12407, CVE-2020-12408, CVE-2020-12409, CVE-2020-12410,
CVE-2020-12411)
It was discovered that NSS showed timing differences when performing DSA
signatures. An attacker could potentially exploit this to obtain private
keys using a timing attack. (CVE-2020-12399)
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 20.04 LTS
- firefox – 77.0.1+build1-0ubuntu0.20.04.1
- Ubuntu 19.10
- firefox – 77.0.1+build1-0ubuntu0.19.10.1
- Ubuntu 18.04 LTS
- firefox – 77.0.1+build1-0ubuntu0.18.04.1
- Ubuntu 16.04 LTS
- firefox – 77.0.1+build1-0ubuntu0.16.04.1
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to restart Firefox to make
all the necessary changes.
References
- CVE-2020-12399
- CVE-2020-12405
- CVE-2020-12406
- CVE-2020-12407
- CVE-2020-12408
- CVE-2020-12409
- CVE-2020-12410
- CVE-2020-12411
Source: USN-4383-1: Firefox vulnerabilities
