Ubuntu 19.10 LTS: 4171-1 Critical: Apport Security Issues

ubuntu

October 30, 2019

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:

Kevin Backhouse discovered Apport would read its user-controlled settings

file as the root user. This could be used by a local attacker to possibly

crash Apport or have other unspecified consequences. (CVE-2019-11481)

Sander Bos discovered a race-condition in Apport during core dump

creation. This could be used by a local attacker to generate a crash report

for a privileged process that is readable by an unprivileged user.

(CVE-2019-11482)

Sander Bos discovered Apport mishandled crash dumps originating from

containers. This could be used by a local attacker to generate a crash

report for a privileged process that is readable by an unprivileged user.

(CVE-2019-11483)

Sander Bos discovered Apport mishandled lock-file creation. This could be

used by a local attacker to cause a denial of service against Apport.

(CVE-2019-11485)

Kevin Backhouse...

Read the Full Advisory

Topics Covered

security advisory Ubuntu local attack issue fix apport

Update Instructions

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

Ubuntu 19.10:
  apport                          2.20.11-0ubuntu8.1
  python-apport                   2.20.11-0ubuntu8.1
  python3-apport                  2.20.11-0ubuntu8.1

Ubuntu 19.04:
  apport                          2.20.10-0ubuntu27.2
  python-apport                   2.20.10-0ubuntu27.2
  python3-apport                  2.20.10-0ubuntu27.2

Ubuntu 18.04 LTS:
  apport                          2.20.9-0ubuntu7.8
  python-apport                   2.20.9-0ubuntu7.8
  python3-apport                  2.20.9-0ubuntu7.8

Ubuntu 16.04 LTS:
  apport                          2.20.1-0ubuntu2.20
  python-apport                   2.20.1-0ubuntu2.20
  python3-apport                  2.20.1-0ubuntu2.20

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