An Apport security update has been released for Ubuntu Linux 18.04 LTS, 20.04 LTS, 20.10, and 21.04.

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Ubuntu Security Notice USN-4965-1
May 25, 2021

apport vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 21.04
- Ubuntu 20.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in Apport.

Software Description:
- apport: automatically generate crash reports for debugging

Details:

Maik Münch discovered that Apport incorrectly handled certain information
gathering operations. A local attacker could use these issues to read and
write arbitrary files as an administrator, and possibly escalate
privileges.

Update instructions:

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

Ubuntu 21.04:
apport 2.20.11-0ubuntu65.1
python3-apport 2.20.11-0ubuntu65.1

Ubuntu 20.10:
apport 2.20.11-0ubuntu50.7
python3-apport 2.20.11-0ubuntu50.7

Ubuntu 20.04 LTS:
apport 2.20.11-0ubuntu27.18
python3-apport 2.20.11-0ubuntu27.18

Ubuntu 18.04 LTS:
apport 2.20.9-0ubuntu7.24
python-apport 2.20.9-0ubuntu7.24
python3-apport 2.20.9-0ubuntu7.24

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

References:
  https://ubuntu.com/security/notices/USN-4965-1
CVE-2021-32547, CVE-2021-32548, CVE-2021-32549, CVE-2021-32550,
CVE-2021-32551, CVE-2021-32552, CVE-2021-32553, CVE-2021-32554,
CVE-2021-32555, CVE-2021-32556, CVE-2021-32557

Package Information:
  https://launchpad.net/ubuntu/+source/apport/2.20.11-0ubuntu65.1
  https://launchpad.net/ubuntu/+source/apport/2.20.11-0ubuntu50.7
  https://launchpad.net/ubuntu/+source/apport/2.20.11-0ubuntu27.18
  https://launchpad.net/ubuntu/+source/apport/2.20.9-0ubuntu7.24