A GLib security update has been released for Ubuntu Linux 16.04 LTS, 18.04 LTS, 20.04 LTS, and 20.10.
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Ubuntu Security Notice USN-4759-1
March 08, 2021
glib2.0 vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
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)
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.
References:
https://ubuntu.com/security/notices/USN-4759-1
CVE-2021-27218, CVE-2021-27219
Package Information:
https://launchpad.net/ubuntu/+source/glib2.0/2.66.1-2ubuntu0.1
https://launchpad.net/ubuntu/+source/glib2.0/2.64.6-1~ubuntu20.04.2
https://launchpad.net/ubuntu/+source/glib2.0/2.56.4-0ubuntu0.18.04.7
https://launchpad.net/ubuntu/+source/glib2.0/2.48.2-0ubuntu4.7
