Ubuntu Security Notices
USN-4315-1

USN-4315-1: Apport vulnerabilities

Publication date

2 April 2020

Overview

Several security issues were fixed in Apport.

Releases

19.10 18.04 LTS 16.04 LTS

Packages

apport - automatically generate crash reports for debugging

Details

Maximilien Bourgeteau discovered that the Apport lock file was created with
insecure permissions. This could allow a local attacker to escalate their
privileges via a symlink attack. (CVE-2020-8831)

Maximilien Bourgeteau discovered a race condition in Apport when setting
crash report permissions. This could allow a local attacker to read
arbitrary files via a symlink attack. (CVE-2020-8833)

Maximilien Bourgeteau discovered that the Apport lock file was created with
insecure permissions. This could allow a local attacker to escalate their
privileges via a symlink attack. (CVE-2020-8831)

Maximilien Bourgeteau discovered a race condition in Apport when setting
crash report permissions. This could allow a local attacker to read
arbitrary files via a symlink attack. (CVE-2020-8833)

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
19.10 eoan	apport – 2.20.11-0ubuntu8.8
	python-apport – 2.20.11-0ubuntu8.8
	python3-apport – 2.20.11-0ubuntu8.8
18.04 bionic	apport – 2.20.9-0ubuntu7.14
	python-apport – 2.20.9-0ubuntu7.14
	python3-apport – 2.20.9-0ubuntu7.14
16.04 xenial	apport – 2.20.1-0ubuntu2.23
	python-apport – 2.20.1-0ubuntu2.23
	python3-apport – 2.20.1-0ubuntu2.23

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Get Ubuntu Pro

References

USN-4315-2

USN-4315-2