[USN-4599-1] Firefox vulnerabilities

Chris Coulson chris.coulson at canonical.com
Fri Oct 23 11:29:21 UTC 2020

Ubuntu Security Notice USN-4599-1
October 23, 2020

firefox vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS


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


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 prompt
for opening an external application, obtain sensitive information, or
arbitrary code.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.10:
  firefox                         82.0+build2-0ubuntu0.20.10.1

Ubuntu 20.04 LTS:
  firefox                         82.0+build2-0ubuntu0.20.04.1

Ubuntu 18.04 LTS:
  firefox                         82.0+build2-0ubuntu0.18.04.1

After a standard system update you need to restart Firefox to make
all the necessary changes.

  CVE-2020-15254, CVE-2020-15680, CVE-2020-15681, CVE-2020-15682,
  CVE-2020-15683, CVE-2020-15684, CVE-2020-15969

Package Information:

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