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Ubuntu 19.10 Security Advisory USN-4315-1: Apport Privilege Escalation

ubuntu
Calendar Grey April 2, 2020
Dist Ubuntu Esm H88
Enhance your Debian setup to resolve APT concerns resulting in unauthorized access. Fortify your system immediately.
Several security issues were fixed in Apport.

Summary

Several security issues were fixed in Apport.

Software Description:

- 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)

Topics%20covered

Topics Covered

security advisory privilege escalation Ubuntu local attack apport

Update Instructions

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

Ubuntu 19.10:
  apport                          2.20.11-0ubuntu8.8
  python-apport                   2.20.11-0ubuntu8.8
  python3-apport                  2.20.11-0ubuntu8.8

Ubuntu 18.04 LTS:
  apport                          2.20.9-0ubuntu7.14
  python-apport                   2.20.9-0ubuntu7.14
  python3-apport                  2.20.9-0ubuntu7.14

Ubuntu 16.04 LTS:
  apport                          2.20.1-0ubuntu2.23
  python-apport                   2.20.1-0ubuntu2.23
  python3-apport                  2.20.1-0ubuntu2.23

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

References

https://ubuntu.com/security/notices/USN-4315-1

CVE-2020-8831, CVE-2020-8833

Severity
critical
Lowest
Low
Medium
High
Critical

April 02, 2020

Topics%20covered

Topics Covered

security advisory privilege escalation Ubuntu local attack apport

Package Information

https://launchpad.net/ubuntu/+source/apport/2.20.11-0ubuntu8.8
https://launchpad.net/ubuntu/+source/apport/2.20.9-0ubuntu7.14
https://launchpad.net/ubuntu/+source/apport/2.20.1-0ubuntu2.23

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