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AUSCERT External Security Bulletin Redistribution
[DLA 1651-1] libgd2 security update
31 January 2019
AusCERT Security Bulletin Summary
Operating System: Debian GNU/Linux 8
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Denial of Service -- Remote with User Interaction
CVE Names: CVE-2019-6978 CVE-2019-6977 CVE-2018-1000222
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Package : libgd2
Version : 2.1.0-5+deb8u12
CVE ID : CVE-2018-5711 CVE-2018-1000222 CVE-2019-6977
Several issues in libgd2, a graphics library that allows to quickly draw
images, have been found.
A potential double free in gdImage*Ptr() has been reported by Solmaz
Salimi (aka. Rooney).
Simon Scannell found a heap-based buffer overflow, exploitable with
crafted image data.
A new double free vulnerabilities in gdImageBmpPtr() has been
reported by Solmaz Salimi (aka. Rooney).
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
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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