firefox regressions
A security issue affects these releases of Ubuntu and its
derivatives:
* Ubuntu 20.04 LTS
* Ubuntu 18.04 LTS
* Ubuntu 16.04 LTS
Summary
USN-4474-1 caused some minor regressions in Firefox.
Software Description
* firefox - Mozilla Open Source web browser
Details
USN-4474-1 fixed vulnerabilities in Firefox. The update introduced
various minor regressions. This update fixes the problem.
We apologize for the inconvenience.
Original advisory 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, trick the user in to installing a malicious extension,
spoof the URL bar, leak sensitive information between origins, or
execute arbitrary code. (CVE-2020-15664, CVE-2020-15665,
CVE-2020-15666, CVE-2020-15670)
It was discovered that NSS incorrectly handled certain signatures.
An attacker could possibly use this issue to expose sensitive
information. (CVE-2020-12400, CVE-2020-12401, CVE-2020-6829)
A data race was discovered when importing certificate information
in to the trust store. An attacker could potentially exploit this
to cause an unspecified impact. (CVE-2020-15668)
Update instructions
The problem can be corrected by updating your system to the
following package versions:
Ubuntu 20.04 LTS
firefox - 80.0.1+build1-0ubuntu0.20.04.1
Ubuntu 18.04 LTS
firefox - 80.0.1+build1-0ubuntu0.18.04.1
Ubuntu 16.04 LTS
firefox - 80.0.1+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
* USN-4474-1
* LP: 1893021
--- Mystic BBS v1.12 A46 (Linux/64)
* Origin: BZ&BZ BBS (21:4/110)