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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.1905
                  USN-3994-1: gnome-desktop vulnerability
                                28 May 2019

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           gnome-desktop
Publisher:         Ubuntu
Operating System:  Ubuntu
                   Linux variants
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Reduced Security                -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-11460  

Original Bulletin: 
   https://usn.ubuntu.com/3994-1/

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Ubuntu. It is recommended that administrators 
         running gnome-desktop check for an updated version of the software 
         for their operating system.

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USN-3994-1: gnome-desktop vulnerability
27 May 2019

gnome-desktop3 vulnerability
A security issue affects these releases of Ubuntu and its derivatives:

  o Ubuntu 19.04
  o Ubuntu 18.10
  o Ubuntu 18.04 LTS

Summary

gnome-desktop could be made to escape the thumbnailer sandbox.

Software Description

  o gnome-desktop3 - Introspection data for GnomeDesktop

Details

It was discovered that gnome-desktop incorrectly confined thumbnailers. If a
user were tricked into downloading a malicious image file, a remote attacker
could possibly combine this issue with another vulnerability to escape the
sandbox and execute arbitrary code.

Update instructions

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

Ubuntu 19.04
    libgnome-desktop-3-17 - 3.32.1-1ubuntu1.1
Ubuntu 18.10
    libgnome-desktop-3-17 - 3.30.1-1ubuntu1.1
Ubuntu 18.04 LTS
    libgnome-desktop-3-17 - 3.28.2-0ubuntu1.3

To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .

After a standard system update you need to restart your session to make all the
necessary changes.

References

  o CVE-2019-11460

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