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From: Marc Deslauriers <marc.deslauriers@canonical.com>
Reply-To: Ubuntu Security <security@ubuntu.com>
To: "ubuntu-security-announce@lists.ubuntu.com"
 <ubuntu-security-announce@lists.ubuntu.com>
Message-ID: <836ea151-ef95-4bca-a8f4-373cfd8c1a35@canonical.com>
Subject: [USN-6768-1] GLib vulnerability

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==========================================================================
Ubuntu Security Notice USN-6768-1
May 09, 2024

glib2.0 vulnerability
==========================================================================

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

- Ubuntu 24.04 LTS
- Ubuntu 23.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

GLib could be made to accept spoofed D-Bus signals.

Software Description:
- glib2.0: GLib library of C routines

Details:

Alicia Boya García discovered that GLib incorrectly handled signal
subscriptions. A local attacker could use this issue to spoof D-Bus signals
resulting in a variety of impacts including possible privilege escalation.

Update instructions:

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

Ubuntu 24.04 LTS
   libglib2.0-0t64                 2.80.0-6ubuntu3.1
   libglib2.0-bin                  2.80.0-6ubuntu3.1

Ubuntu 23.10
   libglib2.0-0                    2.78.0-2ubuntu0.1
   libglib2.0-bin                  2.78.0-2ubuntu0.1

Ubuntu 22.04 LTS
   libglib2.0-0                    2.72.4-0ubuntu2.3
   libglib2.0-bin                  2.72.4-0ubuntu2.3

Ubuntu 20.04 LTS
   libglib2.0-0                    2.64.6-1~ubuntu20.04.7
   libglib2.0-bin                  2.64.6-1~ubuntu20.04.7

After a standard system update you need to reboot your computer to make all
the necessary changes.

References:
   https://ubuntu.com/security/notices/USN-6768-1
   CVE-2024-34397

Package Information:
   https://launchpad.net/ubuntu/+source/glib2.0/2.80.0-6ubuntu3.1
   https://launchpad.net/ubuntu/+source/glib2.0/2.78.0-2ubuntu0.1
   https://launchpad.net/ubuntu/+source/glib2.0/2.72.4-0ubuntu2.3
   https://launchpad.net/ubuntu/+source/glib2.0/2.64.6-1~ubuntu20.04.7

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