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========================================================================== Ubuntu Security Notice USN-4383-1 June 04, 2020
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
After a standard system update you need to restart Firefox to make all the necessary changes.
References: https://usn.ubuntu.com/4383-1 CVE-2020-12399, CVE-2020-12405, CVE-2020-12406, CVE-2020-12407, CVE-2020-12408, CVE-2020-12409, CVE-2020-12410, CVE-2020-12411
Package Information:
https://launchpad.net/ubuntu/+source/firefox/77.0.1+build1-0ubuntu0.20.04.1
https://launchpad.net/ubuntu/+source/firefox/77.0.1+build1-0ubuntu0.19.10.1
https://launchpad.net/ubuntu/+source/firefox/77.0.1+build1-0ubuntu0.18.04.1
https://launchpad.net/ubuntu/+source/firefox/77.0.1+build1-0ubuntu0.16.04.1
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