Ubuntu alert USN-4315-1 (apport)

From:
             
 
Alex Murray <alex.murray@canonical.com> 
To:
             
 
ubuntu-security-announce@lists.ubuntu.com 
Subject:
             
 
[USN-4315-1] Apport vulnerabilities 
Date:
             
 
Thu, 02 Apr 2020 13:29:29 +1030
Message-ID:
             
 
<87bloavbhq.fsf@canonical.com>
==========================================================================
Ubuntu Security Notice USN-4315-1
April 02, 2020

apport vulnerabilities
==========================================================================

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

- Ubuntu 19.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

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)

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://usn.ubuntu.com/4315-1
  CVE-2020-8831, CVE-2020-8833

Package Information:
  https://launchpad.net/ubuntu/+source/apport/2.20.11-0ubun...
  https://launchpad.net/ubuntu/+source/apport/2.20.9-0ubunt...
  https://launchpad.net/ubuntu/+source/apport/2.20.1-0ubunt...
-- 
ubuntu-security-announce mailing list
ubuntu-security-announce@lists.ubuntu.com
Modify settings or unsubscribe at:
https://lists.ubuntu.com/mailman/listinfo/ubuntu-security...