ESB-2018.2023 - [Ubuntu] libpng: Denial of service - Remote with user interaction 2018-07-12

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.2023
                 libpng vulnerabilities patched in Ubuntu
                               12 July 2018

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

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

Product:           libpng
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Denial of Service -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-13785 CVE-2016-10087 

Reference:         ESB-2017.2180

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3712-1
   http://www.ubuntu.com/usn/usn-3712-2

Comment: This bulletin contains two (2) Ubuntu security advisories.

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==========================================================================
Ubuntu Security Notice USN-3712-1
July 11, 2018

libpng, libpng1.6 vulnerabilities
==========================================================================

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

- - Ubuntu 18.04 LTS
- - Ubuntu 17.10
- - Ubuntu 16.04 LTS
- - Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in libpng.

Software Description:
- - libpng1.6: PNG library - development (version 1.6)
- - libpng: PNG (Portable Network Graphics) file library

Details:

Patrick Keshishian discovered that libpng incorrectly handled certain
PNG files. An attacker could possibly use this to cause a denial of
service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04
LTS. (CVE-2016-10087)

Thuan Pham discovered that libpng incorrectly handled certain PNG
files. An attacker could possibly use this to cause a denial of
service. This issue only affected Ubuntu 17.10 and Ubuntu 18.04 LTS.
(CVE-2018-13785)

Update instructions:

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

Ubuntu 18.04 LTS:
   libpng16-16                                          1.6.34-1ubuntu0.18.04.1

Ubuntu 17.10:
   libpng16-16                                          1.6.34-1ubuntu0.17.10.1

Ubuntu 16.04 LTS:
   libpng12-0                                           1.2.54-1ubuntu1.1

Ubuntu 14.04 LTS:
   libpng12-0                                           1.2.50-1ubuntu2.14.04.3

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

References:
   https://usn.ubuntu.com/usn/usn-3712-1
   CVE-2016-10087, CVE-2018-13785

Package Information:
   https://launchpad.net/ubuntu/+source/libpng1.6/1.6.34-1ubuntu0.18.04.1
   https://launchpad.net/ubuntu/+source/libpng1.6/1.6.34-1ubuntu0.17.10.1
   https://launchpad.net/ubuntu/+source/libpng/1.2.54-1ubuntu1.1
   https://launchpad.net/ubuntu/+source/libpng/1.2.50-1ubuntu2.14.04.3

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

==========================================================================
Ubuntu Security Notice USN-3712-2
July 11, 2018

libpng vulnerability
==========================================================================

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

- - Ubuntu 12.04 ESM

Summary:

libpng could be made to crash if it received a specially crafted file.

Software Description:
- - libpng: PNG (Portable Network Graphics) file library

Details:

USN-3712-1 fixed a vulnerability in libpng. This update provides
the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

  Patrick Keshishian discovered that libpng incorrectly handled certain
  PNG files. An attacker could possibly use this to cause a denial of
  service.

Update instructions:

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

Ubuntu 12.04 ESM:
   libpng12-0                                            1.2.46-3ubuntu4.3
   
In general, a standard system update will make all the necessary
changes.

References:
   https://usn.ubuntu.com/usn/usn-3712-2
   https://usn.ubuntu.com/usn/usn-3712-1
   CVE-2016-10087

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