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USN-4315-1: Apport vulnerabilities

2 April 2020

Several security issues were fixed in Apport.



  • apport - automatically generate crash reports for debugging


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

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

Ubuntu 19.10
Ubuntu 18.04
Ubuntu 16.04

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

Related notices

  • USN-4315-2: apport-kde, apport-noui, python-problem-report, apport-retrace, dh-apport, python3-problem-report, apport-gtk, apport, python3-apport, python-apport, apport-valgrind