[USN-4315-1] Apport vulnerabilities

Alex Murray alex.murray at canonical.com
Thu Apr 2 02:59:29 UTC 2020

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


Several security issues were fixed in Apport.

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


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.

  CVE-2020-8831, CVE-2020-8833

Package Information:
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 524 bytes
Desc: not available
URL: <https://lists.ubuntu.com/archives/ubuntu-security-announce/attachments/20200402/42270692/attachment.sig>

More information about the ubuntu-security-announce mailing list