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Ubuntu Security Notice USN-4667-1
December 09, 2020
apt 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:
APT could be made to crash or stop responding if it opened a specially
crafted file.
Software Description:
– apt: Advanced front-end for dpkg
Details:
Kevin Backhouse discovered that APT incorrectly handled certain packages.
A local attacker could possibly use this issue to cause APT to crash or
stop responding, resulting in a denial of service.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.10:
apt 2.1.10ubuntu0.1
Ubuntu 20.04 LTS:
apt 2.0.2ubuntu0.2
Ubuntu 18.04 LTS:
apt 1.6.12ubuntu0.2
Ubuntu 16.04 LTS:
apt 1.2.32ubuntu0.2
In general, a standard system update will make all the necessary changes.
References:
https://usn.ubuntu.com/4667-1
CVE-2020-27350
Package Information:
https://launchpad.net/ubuntu/+source/apt/2.1.10ubuntu0.1
https://launchpad.net/ubuntu/+source/apt/2.0.2ubuntu0.2
https://launchpad.net/ubuntu/+source/apt/1.6.12ubuntu0.2
https://launchpad.net/ubuntu/+source/apt/1.2.32ubuntu0.2
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