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Ubuntu Security Notice USN-5709-2

Ubuntu Security Notice USN-5709-2
Posted Nov 11, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5709-2 - USN-5709-1 fixed vulnerabilities in Firefox. The update introduced several minor regressions. This update fixes the problem. 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. It was discovered that Firefox saved usernames to a plaintext file. A local user could potentially exploit this to obtain sensitive information.

tags | advisory, denial of service, arbitrary, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2022-42928, CVE-2022-42931
SHA-256 | 78a1782c9b02a2022d8dfc81b40f7f4ee6fd0c0698f8deb2716e192bad53d89c

Ubuntu Security Notice USN-5709-2

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-5709-2
November 10, 2022

firefox vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

USN-5709-1 introduced minor regressions in Firefox

Software Description:
- firefox: Mozilla Open Source web browser

Details:

USN-5709-1 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-2022-42927,
CVE-2022-42928, CVE-2022-42929, CVE-2022-42930, CVE-2022-42932)

It was discovered that Firefox saved usernames to a plaintext file. A
local user could potentially exploit this to obtain sensitive information.
(CVE-2022-42931)

Update instructions:

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

Ubuntu 20.04 LTS:
firefox 106.0.5+build1-0ubuntu0.20.04.1

Ubuntu 18.04 LTS:
firefox 106.0.5+build1-0ubuntu0.18.04.1

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

References:
https://ubuntu.com/security/notices/USN-5709-2
https://ubuntu.com/security/notices/USN-5709-1
https://launchpad.net/bugs/1996178

Package Information:
https://launchpad.net/ubuntu/+source/firefox/106.0.5+build1-0ubuntu0.20.04.1
https://launchpad.net/ubuntu/+source/firefox/106.0.5+build1-0ubuntu0.18.04.1
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