USN-4315-2: Apport vulnerabilities
15 June 2020
Several security issues were fixed in Apport.
- apport - automatically generate crash reports for debugging
USN-4315-1 fixed several vulnerabilities in Apport. This update provides
the corresponding update for Ubuntu 14.04 ESM.
Original advisory 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)
The problem can be corrected by updating your system to the following package versions:
- apport - 2.14.1-0ubuntu3.29+esm4
- python-apport - 2.14.1-0ubuntu3.29+esm4
- python3-apport - 2.14.1-0ubuntu3.29+esm4
In general, a standard system update will make all the necessary changes.