Operating System:

[Debian]

Published:

31 January 2019

Protect yourself against future threats.

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.0271
                    [DLA 1651-1] libgd2 security update
                              31 January 2019

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

Product:           libgd2
Publisher:         Debian
Operating System:  Debian GNU/Linux 8
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-6978 CVE-2019-6977 CVE-2018-1000222
                   CVE-2018-5711  

Reference:         ESB-2018.2531

Original Bulletin: 
   https://lists.debian.org/debian-lts-announce/2019/01/msg00028.html

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Package        : libgd2
Version        : 2.1.0-5+deb8u12
CVE ID         : CVE-2018-5711 CVE-2018-1000222 CVE-2019-6977
                  CVE-2019-6978


Several issues in libgd2, a graphics library that allows to quickly draw 
images, have been found.

CVE-2019-6977
      A potential double free in gdImage*Ptr() has been reported by Solmaz
      Salimi (aka. Rooney).

CVE-2019-6978
      Simon Scannell found a heap-based buffer overflow, exploitable with
      crafted image data.

CVE-2018-1000222
      A new double free vulnerabilities in gdImageBmpPtr() has been
      reported by Solmaz Salimi (aka. Rooney).

CVE-2018-5711
      Due to an integer signedness error the GIF core parsing function can
      enter an infinite loop. This will lead to a Denial of Service and
      exhausted server resources.


For Debian 8 "Jessie", these problems have been fixed in version
2.1.0-5+deb8u12.

We recommend that you upgrade your libgd2 packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

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