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Ubuntu Security Notice USN-4687-1

Ubuntu Security Notice USN-4687-1
Posted Jan 8, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4687-1 - A use-after-free was discovered in Firefox when handling SCTP packets. An attacker could potentially exploit this to cause a denial of service, or execute arbitrary code.

tags | advisory, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2020-16044
MD5 | 8b8168d3ee3d2c80f6d055fe05c6c894

Ubuntu Security Notice USN-4687-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4687-1
January 08, 2021

firefox vulnerability
==========================================================================

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

- Ubuntu 20.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 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:

A use-after-free was discovered in Firefox when handling SCTP packets.
An attacker could potentially exploit this to cause a denial of service,
or execute arbitrary code.

Update instructions:

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

Ubuntu 20.10:
firefox 84.0.2+build1-0ubuntu0.20.10.1

Ubuntu 20.04 LTS:
firefox 84.0.2+build1-0ubuntu0.20.04.1

Ubuntu 18.04 LTS:
firefox 84.0.2+build1-0ubuntu0.18.04.1

Ubuntu 16.04 LTS:
firefox 84.0.2+build1-0ubuntu0.16.04.1

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

References:
https://usn.ubuntu.com/4687-1
CVE-2020-16044

Package Information:

https://launchpad.net/ubuntu/+source/firefox/84.0.2+build1-0ubuntu0.20.10.1

https://launchpad.net/ubuntu/+source/firefox/84.0.2+build1-0ubuntu0.20.04.1

https://launchpad.net/ubuntu/+source/firefox/84.0.2+build1-0ubuntu0.18.04.1

https://launchpad.net/ubuntu/+source/firefox/84.0.2+build1-0ubuntu0.16.04.1

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