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Ubuntu Security Notice USN-4546-1
September 28, 2020
firefox vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 20.04 LTS
– 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, conduct cross-site
scripting (XSS) attacks, spoof the site displayed in the download dialog,
or execute arbitrary code.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS:
firefox 81.0+build2-0ubuntu0.20.04.1
Ubuntu 18.04 LTS:
firefox 81.0+build2-0ubuntu0.18.04.1
Ubuntu 16.04 LTS:
firefox 81.0+build2-0ubuntu0.16.04.1
After a standard system update you need to restart Firefox to make
all the necessary changes.
References:
https://usn.ubuntu.com/4546-1
CVE-2020-15673, CVE-2020-15674, CVE-2020-15675, CVE-2020-15676,
CVE-2020-15677, CVE-2020-15678
Package Information:
https://launchpad.net/ubuntu/+source/firefox/81.0+build2-0ubuntu0.20.04.1
https://launchpad.net/ubuntu/+source/firefox/81.0+build2-0ubuntu0.18.04.1
https://launchpad.net/ubuntu/+source/firefox/81.0+build2-0ubuntu0.16.04.1
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