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Ubuntu Security Notice USN-5107-1

Ubuntu Security Notice USN-5107-1
Posted Oct 8, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5107-1 - 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, spoof another origin, or execute arbitrary code.

tags | advisory, denial of service, arbitrary, spoof
systems | linux, ubuntu
advisories | CVE-2021-32810, CVE-2021-38499
MD5 | dc7fa97881bdef965e8e559aba52c5c7

Ubuntu Security Notice USN-5107-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-5107-1
October 07, 2021

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

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

- Ubuntu 21.04
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Firefox could be made to crash or run programs as your login if it
opened a malicious website.

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, spoof another
origin, or execute arbitrary code.

Update instructions:

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

Ubuntu 21.04:
firefox 93.0+build1-0ubuntu0.21.04.1

Ubuntu 20.04 LTS:
firefox 93.0+build1-0ubuntu0.20.04.1

Ubuntu 18.04 LTS:
firefox 93.0+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-5107-1
CVE-2021-32810, CVE-2021-38496, CVE-2021-38497, CVE-2021-38498,
CVE-2021-38499, CVE-2021-38500, CVE-2021-38501

Package Information:
https://launchpad.net/ubuntu/+source/firefox/93.0+build1-0ubuntu0.21.04.1
https://launchpad.net/ubuntu/+source/firefox/93.0+build1-0ubuntu0.20.04.1
https://launchpad.net/ubuntu/+source/firefox/93.0+build1-0ubuntu0.18.04.1
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