1. Ubuntu Security Notices
  2. USN-4668-3

USN-4668-3: python-apt regression

Publication date

4 January 2021

Overview

USN-4668-1 introduced a regression in python-apt.

Releases

Packages

Details

USN-4668-1 fixed vulnerabilities in python-apt. The update caused a
regression when using certain APIs with a file handle. This update fixes
the problem.

We apologize for the inconvenience.

Original advisory details:

Kevin Backhouse discovered that python-apt incorrectly handled resources. A
local attacker could possibly use this issue to cause python-apt to consume
resources, leading to a denial of service.

USN-4668-1 fixed vulnerabilities in python-apt. The update caused a
regression when using certain APIs with a file handle. This update fixes
the problem.

We apologize for the inconvenience.

Original advisory details:

Kevin Backhouse discovered that python-apt incorrectly handled resources. A
local attacker could possibly use this issue to cause python-apt to consume
resources, leading to a denial of service.

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
20.10 groovy python3-apt –  2.1.3ubuntu1.3
20.04 focal python-apt –  2.0.0ubuntu0.20.04.3
python3-apt –  2.0.0ubuntu0.20.04.3
18.04 bionic python-apt –  1.6.5ubuntu0.5
python3-apt –  1.6.5ubuntu0.5
16.04 xenial python-apt –  1.1.0~beta1ubuntu0.16.04.11
python3-apt –  1.1.0~beta1ubuntu0.16.04.11

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References

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