1. Ubuntu Security Notices
  2. USN-6143-1

USN-6143-1: Firefox vulnerabilities

Publication date

7 June 2023

Overview

Several security issues were fixed in Firefox.

Releases

Packages

  • firefox - Mozilla Open Source web browser

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)

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)

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
20.04 focal firefox –  114.0+build3-0ubuntu0.20.04.1

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References

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