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Ubuntu Security Notice USN-4049-2
July 08, 2019

glib2.0 vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.04 ESM
- Ubuntu 12.04 ESM

Summary:

GLib did not properly restrict directory and file permissions.

Software Description:
- glib2.0: GLib Input, Output and Streaming Library (fam module)

Details:

USN-4049-1 fixed a vulnerability in GLib. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

 It was discovered that GLib created directories and files without properly
 restricting permissions. An attacker could possibly use this issue to access
 sensitive information.

Update instructions:

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

Ubuntu 14.04 ESM:
  libglib2.0-0                    2.40.2-0ubuntu1.1+esm2
  libglib2.0-bin                  2.40.2-0ubuntu1.1+esm2

Ubuntu 12.04 ESM:
  libglib2.0-0                    2.32.4-0ubuntu1.3
  libglib2.0-bin                  2.32.4-0ubuntu1.3

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

References:
  https://usn.ubuntu.com/4049-2
  https://usn.ubuntu.com/4049-1
  CVE-2019-13012