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USN-6201-1: Firefox vulnerabilities

5 July 2023

Several security issues were fixed in Firefox.

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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-2023-37201,
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)

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.

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