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USN-6710-1: Firefox vulnerabilities

25 March 2024

Several security issues were fixed in Firefox.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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Releases

Packages

  • 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)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 20.04

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