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Ubuntu 20.04 LTS USN-6143-2 Critical: Firefox Minor Regression Fix

ubuntu
Calendar Grey June 13, 2023
Dist Ubuntu Esm H88
Announcement regarding Firefox issues stemming from Ubuntu USN-6143-1, correcting function and security setbacks in the browser.
USN-6143-1 caused some minor regressions in Firefox.

Summary

USN-6143-1 caused some minor regressions in Firefox.

Software Description:

- firefox: Mozilla Open Source web browser

Details:

USN-6143-1 fixed vulnerabilities in Firefox. The update introduced

several minor regressions. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

Multiple security issues were discovered in Firefox. If a user were

tricked into opening a specially crafted website, an attacker could

potentially exploit these to cause a denial of service, obtain sensitive

information across domains, or execute arbitrary code. (CVE-2023-34414,

CVE-2023-34416, CVE-2023-34417)

Jun Kokatsu discovered that Firefox did not properly validate site-isolated

process for a document loaded from a data: URL that was the result of a

redirect, leading to an open redirect attack. An attacker could possibly

use this issue to perform phishing attacks. (CVE-2023-34415)

Topics%20covered

Topics Covered

security advisory denial of service critical firefox regressions ubuntu open redirect

Update Instructions

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

Ubuntu 20.04 LTS:
  firefox                         114.0.1+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-6143-2

https://ubuntu.com/security/notices/USN-6143-1

https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/2023610

Severity
critical
Lowest
Low
Medium
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Critical

June 13, 2023

Topics%20covered

Topics Covered

security advisory denial of service critical firefox regressions ubuntu open redirect

Package Information

https://launchpad.net/ubuntu/+source/firefox/114.0.1+build1-0ubuntu0.20.04.1

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