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Ubuntu Security Notice USN-6710-1
March 25, 2024

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

- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in Firefox.

Software Description:
- firefox: Mozilla Open Source web browser

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                         124.0.1+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-6710-1
   CVE-2024-29943, CVE-2024-29944

Package Information:
   https://launchpad.net/ubuntu/+source/firefox/124.0.1+build1-0ubuntu0.20.04.1