USN-4383-1: Firefox vulnerabilities

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