ESB-2019.0435 - [Linux][Ubuntu] gvfs: Modify arbitrary files - Existing account 2019-02-13

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.0435
                            GVfs vulnerability
                             13 February 2019

===========================================================================

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

Product:           gvfs
Publisher:         Ubuntu
Operating System:  Ubuntu
                   Linux variants
Impact/Access:     Modify Arbitrary Files -- Existing Account
                   Read-only Data Access  -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-3827  

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3888-1

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

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==========================================================================
Ubuntu Security Notice USN-3888-1
February 12, 2019

gvfs vulnerability
==========================================================================

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

- - Ubuntu 18.10
- - Ubuntu 18.04 LTS

Summary:

GVfs could be made to expose sensitive information if it received
a specially crafted input.

Software Description:
- - gvfs: userspace virtual filesystem - GIO module

Details:

It was discovered that GVfs incorrectly handled certain inputs. An
attacker could possibly use this issue to access sensitive information.

Update instructions:

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

Ubuntu 18.10:
  gvfs                            1.38.1-0ubuntu1.2
  gvfs-backends                   1.38.1-0ubuntu1.2

Ubuntu 18.04 LTS:
  gvfs                            1.36.1-0ubuntu1.3
  gvfs-backends                   1.36.1-0ubuntu1.3

In general, a standard system update will make all the necessary
changes.

References:
  https://usn.ubuntu.com/usn/usn-3888-1
  CVE-2019-3827

Package Information:
  https://launchpad.net/ubuntu/+source/gvfs/1.38.1-0ubuntu1.2
  https://launchpad.net/ubuntu/+source/gvfs/1.36.1-0ubuntu1.3

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