Ubuntu alert USN-5434-1 (firefox)

From:
             
 
Chris Coulson <chris.coulson@canonical.com>
To:
             
 
ubuntu-security-announce@lists.ubuntu.com
Subject:
             
 
[USN-5434-1] Firefox vulnerabilities
Date:
             
 
Mon, 23 May 2022 16:10:54 +0100
Message-ID:
             
 
<c4ffc433-45b9-2946-4f3c-757b867ac5bf@canonical.com>
==========================================================================
Ubuntu Security Notice USN-5434-1
May 23, 2022

firefox vulnerabilities
==========================================================================

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

- Ubuntu 21.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Firefox could be made to execute JavaScript in a privileged context if it
opened a malicious website.

Software Description:
- firefox: Mozilla Open Source web browser

Details:

It was discovered that the methods of an Array object could be corrupted
as a result of prototype pollution by sending a message to the parent
process. If a user were tricked into opening a specially crafted website,
an attacker could exploit this to execute JavaScript in a privileged
context.

Update instructions:

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

Ubuntu 21.10:
  firefox                         100.0.2+build1-0ubuntu0.21.10.1

Ubuntu 20.04 LTS:
  firefox                         100.0.2+build1-0ubuntu0.20.04.1

Ubuntu 18.04 LTS:
  firefox                         100.0.2+build1-0ubuntu0.18.04.1

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

References:
  https://ubuntu.com/security/notices/USN-5434-1
  CVE-2022-1529, CVE-2022-1802

Package Information:
  https://launchpad.net/ubuntu/+source/firefox/100.0.2+buil...
  https://launchpad.net/ubuntu/+source/firefox/100.0.2+buil...
  https://launchpad.net/ubuntu/+source/firefox/100.0.2+buil...