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Ubuntu Security Notice USN-6201-1
July 05, 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-2023-37201,
CVE-2023-37202, CVE-2023-37205, CVE-2023-37207, CVE-2023-37209,
CVE-2023-37210, CVE-2023-37211, CVE-2023-37212)

Martin Hostettler discovered that Firefox did not properly block storage of
all cookies when configured. An attacker could potentially exploits this
issue to store tracking data without permission in localstorage.
(CVE-2023-3482)

Paul Nickerson discovered that Firefox did have insufficient validation in
the Drag and Drop API. If a user were tricked into creating a shortcut to
local system files, an attacker could execute arbitrary code.
(CVE-2023-37203)

Irvan Kurniawan discovered that Firefox did not properly manage fullscreen
notifications using an option element having an expensive computational
function. An attacker could potentially exploit this issue to perform
spoofing attacks. (CVE-2023-37204)

Ameen Basha M K discovered that Firefox did not properly validate symlinks
in the FileSystem API. If a user were tricked into uploading a symlinked
file to a malicious website, an attacker could obtain sensitive information.
(CVE-2023-37206)

Puf discovered that Firefox did not properly provide warning when opening
Diagcab files. If a user were tricked into opening a malicicous Diagcab
file, an attacker could execute arbitrary code. (CVE-2023-37208)

Update instructions:

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

Ubuntu 20.04 LTS:
  firefox                         115.0+build2-0ubuntu0.20.04.3

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

References:
  https://ubuntu.com/security/notices/USN-6201-1
  CVE-2023-3482, CVE-2023-37201, CVE-2023-37202, CVE-2023-37203,
  CVE-2023-37204, CVE-2023-37205, CVE-2023-37206, CVE-2023-37207,
  CVE-2023-37208, CVE-2023-37209, CVE-2023-37210, CVE-2023-37211,
  CVE-2023-37212

Package Information:
  https://launchpad.net/ubuntu/+source/firefox/115.0+build2-0ubuntu0.20.04.3