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-4764-1
March 15, 2021
glib2.0 vulnerability
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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:
GLib could be made to create files if it opened a specially crafted
archive.
Software Description:
- glib2.0: GLib library of C routines
Details:
It was discovered that GLib incorrectly handled certain symlinks when
replacing files. If a user or automated system were tricked into extracting
a specially crafted file with File Roller, a remote attacker could possibly
create files outside of the intended directory.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.10:
libglib2.0-0 2.66.1-2ubuntu0.2
Ubuntu 20.04 LTS:
libglib2.0-0 2.64.6-1~ubuntu20.04.3
Ubuntu 18.04 LTS:
libglib2.0-0 2.56.4-0ubuntu0.18.04.8
Ubuntu 16.04 LTS:
libglib2.0-0 2.48.2-0ubuntu4.8
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-4764-1
CVE-2021-28153
Package Information:
https://launchpad.net/ubuntu/+source/glib2.0/2.66.1-2ubuntu0.2
https://launchpad.net/ubuntu/+source/glib2.0/2.64.6-1~ubuntu20.04.3
https://launchpad.net/ubuntu/+source/glib2.0/2.56.4-0ubuntu0.18.04.8
https://launchpad.net/ubuntu/+source/glib2.0/2.48.2-0ubuntu4.8
