Headline
Ubuntu Security Notice USN-6768-1
Ubuntu Security Notice 6768-1 - 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.
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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
Related news
Gentoo Linux Security Advisory 202406-1 - A vulnerability has been discovered in GLib, which can lead to privilege escalation. Versions greater than or equal to 2.78.6 are affected.
Debian Linux Security Advisory 5682-1 - Alicia Boya Garcia reported that the GDBus signal subscriptions in the GLib library are prone to a spoofing vulnerability. A local attacker can take advantage of this flaw to cause a GDBus-based client to behave incorrectly, with an application-dependent impact.