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Ubuntu Security Notice USN-3900-1
February 28, 2019

libgd2 vulnerabilities
==========================================================================

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

– Ubuntu 18.10
– Ubuntu 18.04 LTS
– Ubuntu 16.04 LTS
– Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in GD.

Software Description:
– libgd2: GD Graphics Library

Details:

It was discovered that GD incorrectly handled memory when processing
certain images. A remote attacker could use this issue with a specially
crafted image file to cause GD to crash, resulting in a denial of service,
or possibly execute arbitrary code.

Update instructions:

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

Ubuntu 18.10:
libgd-tools 2.2.5-4ubuntu1.1
libgd3 2.2.5-4ubuntu1.1

Ubuntu 18.04 LTS:
libgd-tools 2.2.5-4ubuntu0.3
libgd3 2.2.5-4ubuntu0.3

Ubuntu 16.04 LTS:
libgd-tools 2.1.1-4ubuntu0.16.04.11
libgd3 2.1.1-4ubuntu0.16.04.11

Ubuntu 14.04 LTS:
libgd-tools 2.1.0-3ubuntu0.11
libgd3 2.1.0-3ubuntu0.11

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

References:
https://usn.ubuntu.com/usn/usn-3900-1
CVE-2019-6977, CVE-2019-6978

Package Information:
https://launchpad.net/ubuntu/+source/libgd2/2.2.5-4ubuntu1.1
https://launchpad.net/ubuntu/+source/libgd2/2.2.5-4ubuntu0.3
https://launchpad.net/ubuntu/+source/libgd2/2.1.1-4ubuntu0.16.04.11
https://launchpad.net/ubuntu/+source/libgd2/2.1.0-3ubuntu0.11

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