==========================================================================
Ubuntu Security Notice USN-4315-2
June 15, 2020
apport vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 14.04 ESM
Summary:
Several security issues were fixed in Apport.
Software Description:
– apport: automatically generate crash reports for debugging
Details:
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)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 14.04 ESM:
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.
References:
https://usn.ubuntu.com/4315-2
https://usn.ubuntu.com/4315-1
CVE-2020-8831, CVE-2020-8833
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