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             AUSCERT External Security Bulletin Redistribution

                              ESB-2019.2492.3
               USN-4049-1 and USN-4049-2: GLib vulnerability
                               7 August 2019

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

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

Product:           glib
Publisher:         Ubuntu
Operating System:  Ubuntu
                   Linux variants
Impact/Access:     Modify Arbitrary Files   -- Remote/Unauthenticated
                   Create Arbitrary Files   -- Remote/Unauthenticated
                   Access Confidential Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-13012  

Original Bulletin: 
   https://usn.ubuntu.com/4049-1/
   https://usn.ubuntu.com/4049-4/
   https://usn.ubuntu.com/4049-2/
   https://usn.ubuntu.com/4049-3/

Comment: This bulletin contains four (4) Ubuntu security advisories.
         
         This advisory references vulnerabilities in products which run on 
         platforms other than Ubuntu. It is recommended that administrators 
         running glib check for an updated version of the software for their
         operating system.

Revision History:  August 7 2019: Added 4049-4
                   August 6 2019: Added -3 which fixes a memory leak in 16.04 LTS.
                   July   9 2019: Initial Release

- --------------------------BEGIN INCLUDED TEXT--------------------

USN-4049-1: GLib vulnerability
8 July 2019

glib2.0 vulnerability
A security issue affects these releases of Ubuntu and its derivatives:

  o Ubuntu 18.10
  o Ubuntu 18.04 LTS
  o Ubuntu 16.04 LTS

Summary

GLib did not properly restrict directory and file permissions.

Software Description

  o glib2.0 - GLib Input, Output and Streaming Library (fam module)

Details

It was discovered that GLib created directories and files without properly
restricting permissions. 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
    libglib2.0-0 - 2.58.1-2ubuntu0.2
    libglib2.0-bin - 2.58.1-2ubuntu0.2
Ubuntu 18.04 LTS
    libglib2.0-0 - 2.56.4-0ubuntu0.18.04.4
    libglib2.0-bin - 2.56.4-0ubuntu0.18.04.4
Ubuntu 16.04 LTS
    libglib2.0-0 - 2.48.2-0ubuntu4.3
    libglib2.0-bin - 2.48.2-0ubuntu4.3

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

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

References

  o CVE-2019-13012

- ---

USN-4049-2: GLib vulnerability
8 July 2019

glib2.0 vulnerability
A security issue affects these releases of Ubuntu and its derivatives:

  o Ubuntu 14.04 ESM
  o Ubuntu 12.04 ESM

Summary

GLib did not properly restrict directory and file permissions.

Software Description

  o glib2.0 - GLib Input, Output and Streaming Library (fam module)

Details

USN-4049-1 fixed a vulnerability in GLib. This update provides the
corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

It was discovered that GLib created directories and files without properly
restricting permissions. 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 14.04 ESM
    libglib2.0-0 - 2.40.2-0ubuntu1.1+esm2
    libglib2.0-bin - 2.40.2-0ubuntu1.1+esm2
Ubuntu 12.04 ESM
    libglib2.0-0 - 2.32.4-0ubuntu1.3
    libglib2.0-bin - 2.32.4-0ubuntu1.3

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

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

References

  o USN-4049-1
  o CVE-2019-13012

- --------------------------------------------------------------------------------

USN-4049-3: GLib regression

5 August 2019

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

  * Ubuntu 16.04 LTS

Summary

USN-4049-1 introduced a regression in GLib.

Software Description

  * glib2.0 - GLib Input, Output and Streaming Library (fam module)

Details

USN-4049-1 fixed a vulnerability in GLib. The update introduced a regression in
Ubuntu 16.04 LTS causing a possibly memory leak. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

It was discovered that GLib created directories and files without properly
restricting permissions. 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 16.04 LTS
    libglib2.0-0 - 2.48.2-0ubuntu4.4
    libglib2.0-bin - 2.48.2-0ubuntu4.4

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

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

References

  * USN-4049-1
  * LP: 1838890

- ------------------------------------------------------------------------------

USN-4049-4: GLib regression
6 August 2019

glib2.0 regression
A security issue affects these releases of Ubuntu and its derivatives:

  o Ubuntu 14.04 ESM
  o Ubuntu 12.04 ESM

Summary

USN-4049-1 introduced a regression in GLib.

Software Description

  o glib2.0 - GLib Input, Output and Streaming Library (fam module)

Details

USN-4049-1 fixed a vulnerability in GLib. The update introduced a regression.
This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

It was discovered that GLib created directories and files without properly
restricting permissions. 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 14.04 ESM
    libglib2.0-0 - 2.40.2-0ubuntu1.1+esm3
    libglib2.0-bin - 2.40.2-0ubuntu1.1+esm3
Ubuntu 12.04 ESM
    libglib2.0-0 - 2.32.4-0ubuntu1.4
    libglib2.0-bin - 2.32.4-0ubuntu1.4

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

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

References

  o USN-4049-1
  o LP: 1838890

- --------------------------END INCLUDED TEXT--------------------

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