Ubuntu 20.10, 20.04, 18.04: 4759-1 Critical GLib Denial of Service

ubuntu

March 8, 2021

Several security issues were fixed in GLib.

Summary

Several security issues were fixed in GLib.

Software Description:

- glib2.0: GLib library of C routines

Details:

Krzesimir Nowak discovered that GLib incorrectly handled certain large

buffers. A remote attacker could use this issue to cause applications

linked to GLib to crash, resulting in a denial of service, or possibly

execute arbitrary code. (CVE-2021-27218)

Kevin Backhouse discovered that GLib incorrectly handled certain memory

allocations. A remote attacker could use this issue to cause applications

linked to GLib to crash, resulting in a denial of service, or possibly

execute arbitrary code. (CVE-2021-27219)

Topics Covered

security advisory denial of service critical ubuntu glib

Update Instructions

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

Ubuntu 20.10:
  libglib2.0-0                    2.66.1-2ubuntu0.1

Ubuntu 20.04 LTS:
  libglib2.0-0                    2.64.6-1~ubuntu20.04.2

Ubuntu 18.04 LTS:
  libglib2.0-0                    2.56.4-0ubuntu0.18.04.7

Ubuntu 16.04 LTS:
  libglib2.0-0                    2.48.2-0ubuntu4.7

After a standard system update you need to restart your session to make all
the necessary changes.