Ubuntu alert USN-4764-1 (glib2.0)

From:
             
 
Marc Deslauriers <marc.deslauriers@canonical.com>
To:
             
 
"ubuntu-security-announce@lists.ubuntu.com" <ubuntu-security-announce@lists.ubuntu.com>
Subject:
             
 
[USN-4764-1] GLib vulnerability
Date:
             
 
Mon, 15 Mar 2021 14:30:19 -0400
Message-ID:
             
 
<d9295016-d91a-f087-2d16-623ef884893f@canonical.com>
==========================================================================
Ubuntu Security Notice USN-4764-1
March 15, 2021

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

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/glib2.0/2.66.1-2ubun...
  https://launchpad.net/ubuntu/+source/glib2.0/2.64.6-1~ubu...
  https://launchpad.net/ubuntu/+source/glib2.0/2.56.4-0ubun...
  https://launchpad.net/ubuntu/+source/glib2.0/2.48.2-0ubun...

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