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Ubuntu Security Notice USN-6320-1
August 30, 2023

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:

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-2023-4573,
CVE-2023-4574, CVE-2023-4575, CVE-2023-4578, CVE-2023-4581, CVE-2023-4583,
CVE-2023-4584, CVE-2023-4585)

Lukas Bernhard discovered that Firefox did not properly manage memory when
the "UpdateRegExpStatics" attempted to access "initialStringHeap". An
attacker could potentially exploit this issue to cause a denial of service.
(CVE-2023-4577)

Malte Jürgens discovered that Firefox did not properly handle search
queries if the search query itself was a well formed URL. An attacker could
potentially exploit this issue to perform spoofing attacks. (CVE-2023-4579)

Harveer Singh discovered that Firefox did not properly handle push
notifications stored on disk in private browsing mode. An attacker could
potentially exploits this issue to access sensitive information.
(CVE-2023-4580)

Update instructions:

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

Ubuntu 20.04 LTS:
  firefox                         117.0+build2-0ubuntu0.20.04.1

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

References:
  https://ubuntu.com/security/notices/USN-6320-1
  CVE-2023-4573, CVE-2023-4574, CVE-2023-4575, CVE-2023-4577,
  CVE-2023-4578, CVE-2023-4579, CVE-2023-4580, CVE-2023-4581,
  CVE-2023-4583, CVE-2023-4584, CVE-2023-4585

Package Information:
  https://launchpad.net/ubuntu/+source/firefox/117.0+build2-0ubuntu0.20.04.1