Ubuntu alert USN-6710-2 (firefox)

From:
             
 
Evan Caville <evan.caville@canonical.com>
To:
             
 
ubuntu-security-announce@lists.ubuntu.com
Subject:
             
 
[USN-6710-2] Firefox regressions
Date:
             
 
Thu, 04 Apr 2024 14:10:16 +1000
Message-ID:
             
 
<1a61fced-940b-48f5-b496-ca6024455884@canonical.com>
==========================================================================
Ubuntu Security Notice USN-6710-2
April 04, 2024

firefox regressions
==========================================================================

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

- Ubuntu 20.04 LTS

Summary:

USN-6710-1 caused some minor regressions in Firefox.

Software Description:
- firefox: Mozilla Open Source web browser

Details:

USN-6710-1 fixed vulnerabilities in Firefox. The update introduced
several minor regressions. This update fixes the problem.

Original advisory details:

  Manfred Paul discovered that Firefox did not properly perform bounds
  checking during range analysis, leading to an out-of-bounds write
  vulnerability. A attacker could use this to cause a denial of service,
  or execute arbitrary code. (CVE-2024-29943)
  
  Manfred Paul discovered that Firefox incorrectly handled MessageManager
  listeners under certain circumstances. An attacker who was able to inject
  an event handler into a privileged object may have been able to execute
  arbitrary code. (CVE-2024-29944)

Update instructions:

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

Ubuntu 20.04 LTS:
   firefox                         124.0.2+build1-0ubuntu0.20.04.1

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

References:
   https://ubuntu.com/security/notices/USN-6710-2
   https://ubuntu.com/security/notices/USN-6710-1
   https://launchpad.net/bugs/2060171

Package Information:
   https://launchpad.net/ubuntu/+source/firefox/124.0.2+buil...